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HomeMy WebLinkAboutRFP - 8053 PHOTOVOLTAIC SOLAR AT NIX FARMREQUEST FOR PROPOSAL 8053 PHOTO VOLTAIC SOLAR AT NIX FARM The City of Fort Collins is requesting proposals from qualified firms to provide materials and install a PV (photo voltaic) solar collector system on the 3 remaining southern exposed roof sections of the Nix Farm maintenance shop. The successful service provider will design and install a system in the range of 10 to 20 kW based on design and installation costs. Project must be completed by April 30th, 2015. As part of the City’s commitment to Sustainable Purchasing, proposal submission via email is preferred. Proposals shall be submitted in a single Microsoft Word or PDF file under 20MB and e-mailed to: purchasing@fcgov.com. If electing to submit hard copy proposals instead, Four (4) copies, will be received at the City of Fort Collins' Purchasing Division, 215 North Mason St., 2nd floor, Fort Collins, Colorado 80524. Proposals must be received before 3:00 p.m. (our clock), February 4, 2015 and referenced as Proposal No. 8053. If delivered, they are to be sent to 215 North Mason Street, 2nd Floor, Fort Collins, Colorado 80524. If mailed, the address is P.O. Box 580, Fort Collins, 80522-0580. Please note, additional time is required for bids mailed to the PO Box to be received at the Purchasing Office. The City encourages all Disadvantaged Business Enterprises (DBEs) to submit proposals in response to all requests for proposals. No individual or business will be discriminated against on the grounds of race, color, sex, or national origin. It is the City’s policy to create a level playing field on which DBEs can compete fairly and to ensure nondiscrimination in the award and administration of all contracts. A pre-proposal meeting will be held January 22. 2015 at 10:00 AM at the job site, 1745 Hoffman Road, Fort Collins. Questions concerning the scope of work should be directed to Ethan Cozzens at (970) 221- 6273 or ecozzens@fcgov.com. Questions regarding RFP submittal or process should be directed to John Stephen, CPPO, LEED AP, Senior Buyer at (970) 221-6777 or jstephen@fcgov.com. All questions must be submitted in writing via email to Ethan Cozzens , with a copy to John Stephen, no later than 5:00 PM our clock on January 27, 2015. Questions received after this deadline will not be answered. A copy of the RFP may be obtained at www.rockymountainbidsystem.com. The City of Fort Collins is subject to public information laws, which permit access to most records and documents. Proprietary information in your response must be clearly identified and will be protected to the extent legally permissible. Proposals may not be marked ‘Proprietary’ in Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 970.221.6707 fcgov.com/purchasing RFP 8053 Photo Voltaic Solar at Nix Farm Page 1 of 44 their entirety. All provisions of any contract resulting from this request for proposal will be public information. New Vendors: The City requires new vendors receiving awards from the City to fill out and submit an IRS form W-9 and to register for Direct Deposit (Electronic) payment. If needed, the W-9 form and the Vendor Direct Deposit Authorization Form can be found on the City’s Purchasing website at www.fcgov.com/purchasing under Vendor Reference Documents. Sales Prohibited/Conflict of Interest: No officer, employee, or member of City Council, shall have a financial interest in the sale to the City of any real or personal property, equipment, material, supplies or services where such officer or employee exercises directly or indirectly any decision- making authority concerning such sale or any supervisory authority over the services to be rendered. This rule also applies to subcontracts with the City. Soliciting or accepting any gift, gratuity favor, entertainment, kickback or any items of monetary value from any person who has or is seeking to do business with the City of Fort Collins is prohibited. Collusive or sham proposals: Any proposal deemed to be collusive or a sham proposal will be rejected and reported to authorities as such. Your authorized signature of this proposal assures that such proposal is genuine and is not a collusive or sham proposal. The City of Fort Collins reserves the right to reject any and all proposals and to waive any irregularities or informalities. Utilization of Award by Other Agencies: The City of Fort Collins reserves the right to allow other state and local governmental agencies, political subdivisions, and/or school districts to utilize the resulting award under all terms and conditions specified and upon agreement by all parties. Usage by any other entity shall not have a negative impact on the City of Fort Collins in the current term or in any future terms. Sustainability: Consulting firms/teams participating in the proposal are to provide an overview of the organization’s philosophy and approach to Sustainability. In no more than two (2) pages please describe how your organization strives to be sustainable in the use of materials, equipment, vehicles, fuel, recycling, office practices, etc. The City of Fort Collins incorporates the Triple Bottom Line into our decision process by including economic (or financial), environmental, and social factors in our evaluation. The selected Service Provider shall be expected to sign the City’s standard Agreement without revision prior to commencing Services (see sample attached to this Proposal). Sincerely, Gerry S. Paul Director of Purchasing & Risk Management RFP 8053 Photo Voltaic Solar at Nix Farm Page 2 of 44 8053 PHOTO VOLTAIC SOLAR AT NIX FARM SCOPE OF WORK BACKGROUND Nix Farm maintenance shop is a 6000 sq. ft. building located at 1745 Hoffman Road in Fort Collins, Co. The facility was constructed in 2002 and is adjacent to the Nix Farm house. These properties are operations and support facilities for the City of Fort Collins Natural Areas work group. The maintenance shop has four roof sections that are four- twelve pitch but at different elevations along its southern exposure. The finished roof is metal with standing seams. Currently there is an 11 kW system installed on one of the roof sections. PROJECT DESCRIPTION The City of Fort Collins, Operation Services Department, is seeking proposals from qualified firms to install a PV (photo voltaic) solar collector system on the 3 remaining southern exposed roof sections of the Nix Farm maintenance shop. The service provider will design and install a system in the range of 10 to 20 kW based on design and installation costs. The City has a budgeted amount for this project and would like to leverage as much energy production as possible from the project dollars. Architectural drawings of the facility and a pre-design layout (which can be modified by bidders as needed) are provided with this RFP to aid proposers in evaluating what PV equipment can be successfully installed or what modification must be made to insure successful installation. These drawings can be viewed at the end of this RFP document. SCOPE OF PROJECT  Service Provider to complete & pull all Utilities/Building Department permits.  The system must be installed on the open south facing roof sections as shown on the drawing layout showing the existing conditions on-site.  The system shall include all necessary materials and equipment to make it fully functional. This includes but not limited to panels, mounting hardware, wiring, conduit and mounting hardware, inverters, disconnects at panel and main building power disconnect on the outside of the building.  The system shall incorporate Micro-inverters for maintenance/safety reasons.  Structural analysis completed by a professional engineer of the Nix Farm maintenance shop roof and any wind or snow load considerations shall be provided by the service provider.  Service provider must provide complete installation services for a functional operating system. RFP 8053 Photo Voltaic Solar at Nix Farm Page 3 of 44  PV monitoring and status via remote access must be provided by the service provider and is included in this project. Service Provider will submit specifications of monitoring equipment, infrastructure required to attain monitoring (network drop, phone line, etc.) and all associated ongoing fees for monitoring to be addressed.  Service provider to ensure that all Fort Collins Utilities interconnection contracts and requirements are met. The PV systems must comply with all applicable codes and all Fort Collins Utilities requirements.  Any roof modifications must be completed so roof material warranties will not be voided. Any modifications done shall be reviewed by roof manufacturer and approved by the manufacturer/installer representative. Any costs associated with this manufacturer review shall be paid for by the service provider.  The service provider shall pay close attention to fit and finish and paint/hide/minimize conduit runs exposed on the interior and exterior of the facility. Inverter location shall be convenient, but not obtrusive. The inverter location shall be a collaborative decision between owner and the service provider as design review evolves.  Project must be completed by April 30 th , 2015.  The City of Fort Collins will coordinate the Solar Rebate application process with Fort Collins Utilities.  Please reference the attached drawing showing the existing PV Panel system along with existing Solatubes for as-built reference.  Proposal Submittal Requirements  Provide 3 previous installations of similarly sized photovoltaic systems. Include the size of the system, number of panels, kW DC of electricity and contact information.  Describe any reorganization/restructuring, including purchases, sales, mergers and name changes within your company within the past three years.  Provide an estimate of the total available installed capacity of the proposed equipment at Nix Farm maintenance shop. Provide an annual (by month) PV Watts estimate of the PV systems kWh production.  Service Provider must be a member of the Colorado Solar Energy Industries Association and equipment provided shall meet the Fort Collins Utilities Eligible Equipment List.  Service provider must provide stamped structural drawings to the City upon completion.  Provide turnkey cost including all design, materials, and installation per the scope of work. Service provider must specify American or non-American materials. RFP 8053 Photo Voltaic Solar at Nix Farm Page 4 of 44  The City desires to have American made materials but will review cost using non- American materials. Service provider must provide costs for either American made or non-American made or costs for both.  Provide a separate cost to install owner provided Abound AB1 Series PV modules. Please reference the attached cut sheets for reference. Contractor to provide all brackets & fasteners necessary. The owner will only provide the panels so the service provider is responsible for a complete working system. RFP 8053 Photo Voltaic Solar at Nix Farm Page 5 of 44 REVIEW AND ASSESSMENT Professional firms will be evaluated on the following criteria. These criteria will be the basis for review and assessment of the written proposals and optional interview session. At the discretion of the City, interviews of the top rated firms may be conducted. The rating scale shall be from 1 to 5, with 1 being a poor rating, 3 being an average rating, and 5 being an outstanding rating. WEIGHTING FACTOR QUALIFICATION STANDARD 2.0 Scope of Proposal Does the proposal address all elements of the RFP? Does the proposal show an understanding of the project objectives, methodology to be used and results/outcomes required by the project? Are there any exceptions to the specifications, Scope of Work, or agreement? 2.0 Assigned Personnel Do the persons who will be working on the project have the necessary skills and qualifications? Are sufficient people of the requisite skills and qualifications assigned to the project? 1.0 Availability Can the work be completed in the necessary time? Can the target start and completion dates be met? Are other qualified personnel available to assist in meeting the project schedule if required? Is the project team available to attend meetings as required by the Scope of Work? 1.0 Sustainability/TBL Methodology Does the firm demonstrate a commitment to Sustainability and incorporate Triple Bottom Line methodology in both their Scope of Work for the project, and their day-to-day business operating processes and procedures? 2.0 Cost and Work Hours Does the proposal included detailed cost break-down for each cost element as applicable and are the line- item costs competitive? Do the proposed cost and work hours compare favorably with the Project Manager's estimate? Are the work hours presented reasonable for the effort required by each project task or phase? 2.0 Firm Capability Does the firm have the resources, financial strength, capacity and support capabilities required to successfully complete the project on-time and in- budget? Has the firm successfully completed previous projects of this type and scope? RFP 8053 Photo Voltaic Solar at Nix Farm Page 6 of 44 Definitions Sustainable Purchasing is a process for selecting products or services that have a lesser or reduced negative effect on human health and the environment when compared with competing products or services that serve the same purpose. This process is also known as “Environmentally Preferable Purchasing” (EPP), or “Green Purchasing”. The Triple Bottom Line (TBL) is an accounting framework that incorporates three dimensions of performance: economic, or financial; environmental, and social. The generally accepted definition of Andrew Savitz for TBL is that it “captures the essence of sustainability by measuring the impact of an organization’s activities on the world…including both its profitability and shareholders values and its social, human, and environmental capital.” RFP 8053 Photo Voltaic Solar at Nix Farm Page 7 of 44 REFERENCE EVALUATION (TOP RATED FIRM) The project Manager will check references using the following criteria. The evaluation rankings will be labeled Satisfactory/Unsatisfactory. QUALIFICATION STANDARD Overall Performance Would you hire this Professional again? Did they show the skills required by this project? Timetable Was the original Scope of Work completed within the specified time? Were interim deadlines met in a timely manner? Completeness Was the Professional responsive to client needs; did the Professional anticipate problems? Were problems solved quickly and effectively? Budget Was the original Scope of Work completed within the project budget? Job Knowledge a) If a study, did it meet the Scope of Work? b) If Professional administered a construction contract, was the project functional upon completion and did it operate properly? Were problems corrected quickly and effectively? RFP 8053 Photo Voltaic Solar at Nix Farm Page 8 of 44 SERVICES AGREEMENT THIS AGREEMENT made and entered into the day and year set forth below by and between THE CITY OF FORT COLLINS, COLORADO, a Municipal Corporation, hereinafter referred to as the "City" and , hereinafter referred to as "Service Provider". WITNESSETH: In consideration of the mutual covenants and obligations herein expressed, it is agreed by and between the parties hereto as follows: 1. Scope of Services. The Service Provider agrees to provide services in accordance with the scope of services attached hereto as Exhibit "A", consisting of ( ) page and incorporated herein by this reference. Irrespective of references in Exhibit A to certain named third parties, Service Provider shall be solely responsible for performance of all duties hereunder. 2. The Work Schedule. [Optional] The services to be performed pursuant to this Agreement shall be performed in accordance with the Work Schedule attached hereto as Exhibit "B", consisting of ( ) page , and incorporated herein by this reference. 3. Time of Commencement and Completion of Services. The services to be performed pursuant to this Agreement shall be initiated within ( ) days following execution of this Agreement. Services shall be completed no later than . Time is of the essence. Any extensions of the time limit set forth above must be agreed upon in a writing signed by the parties. 4. Contract Period. [Option 1] This Agreement shall commence upon the date of execution shown on the signature page of this Agreement and shall continue in full force and effect for one (1) year, unless sooner terminated as herein provided. In addition, at the option of the City, the Agreement may be extended for an additional period of one (1) year at the rates provided with written notice to the Service Provider mailed no later than ninety (90) days prior to contract end. 5. Contract Period. [Option 2] This Agreement shall commence , 200 , and shall continue in full force and effect until , 200 , unless sooner terminated as herein provided. In addition, at the option of the City, the Agreement may be extended for additional one year periods not to exceed ( ) additional one year periods. Renewals and pricing changes shall be negotiated by and agreed to by both parties. Written notice of renewal shall be provided to the Service Provider and mailed no later than thirty (30) days prior to contract end. 6. Delay. If either party is prevented in whole or in part from performing its obligations by unforeseeable causes beyond its reasonable control and without its fault or negligence, then the party so prevented shall be excused from whatever performance is prevented by such cause. To the extent that the performance is actually prevented, the Service RFP 8053 Photo Voltaic Solar at Nix Farm Page 9 of 44 Provider must provide written notice to the City of such condition within fifteen (15) days from the onset of such condition. 7. Early Termination by City/Notice. Notwithstanding the time periods contained herein, the City may terminate this Agreement at any time without cause by providing written notice of termination to the Service Provider. Such notice shall be delivered at least fifteen (15) days prior to the termination date contained in said notice unless otherwise agreed in writing by the parties. All notices provided under this Agreement shall be effective when mailed, postage prepaid and sent to the following addresses: Service Provider: City: Copy to: Attn: City of Fort Collins Attn: PO Box 580 Fort Collins, CO 80522 City of Fort Collins Attn: Purchasing Dept. PO Box 580 Fort Collins, CO 80522 In the event of early termination by the City, the Service Provider shall be paid for services rendered to the date of termination, subject only to the satisfactory performance of the Service Provider's obligations under this Agreement. Such payment shall be the Service Provider's sole right and remedy for such termination. 8. Contract Sum. The City shall pay the Service Provider for the performance of this Contract, subject to additions and deletions provided herein, ($ ) as per the attached Exhibit " ", consisting of page , and incorporated herein by this reference. 9. City Representative. The City will designate, prior to commencement of the work, its representative who shall make, within the scope of his or her authority, all necessary and proper decisions with reference to the services provided under this agreement. All requests concerning this agreement shall be directed to the City Representative. 10. Independent Service provider. The services to be performed by Service Provider are those of an independent service provider and not of an employee of the City of Fort Collins. The City shall not be responsible for withholding any portion of Service Provider's compensation hereunder for the payment of FICA, Workmen's Compensation or other taxes or benefits or for any other purpose. 11. Subcontractors. Service Provider may not subcontract any of the Work set forth in the Exhibit A, Statement of Work without the prior written consent of the city, which shall not be unreasonably withheld. If any of the Work is subcontracted hereunder (with the consent of the City), then the following provisions shall apply: (a) the subcontractor must be a reputable, qualified firm with an established record of successful performance in its respective trade performing identical or substantially similar work, (b) the subcontractor will be required to comply with all applicable terms of this Agreement, (c) the subcontract will not create any contractual relationship between any such subcontractor and the City, nor will it obligate the City to pay or see to the payment of any subcontractor, and (d) the work RFP 8053 Photo Voltaic Solar at Nix Farm Page 10 of 44 of the subcontractor will be subject to inspection by the City to the same extent as the work of the Service Provider. 12. Personal Services. It is understood that the City enters into the Agreement based on the special abilities of the Service Provider and that this Agreement shall be considered as an agreement for personal services. Accordingly, the Service Provider shall neither assign any responsibilities nor delegate any duties arising under the Agreement without the prior written consent of the City. 13. Acceptance Not Waiver. The City's approval or acceptance of, or payment for any of the services shall not be construed to operate as a waiver of any rights or benefits provided to the City under this Agreement or cause of action arising out of performance of this Agreement. 14. Warranty. a. Service Provider warrants that all work performed hereunder shall be performed with the highest degree of competence and care in accordance with accepted standards for work of a similar nature. b. Unless otherwise provided in the Agreement, all materials and equipment incorporated into any work shall be new and, where not specified, of the most suitable grade of their respective kinds for their intended use, and all workmanship shall be acceptable to City. c. Service Provider warrants all equipment, materials, labor and other work, provided under this Agreement, except City-furnished materials, equipment and labor, against defects and nonconformances in design, materials and workmanship/workwomanship for a period beginning with the start of the work and ending twelve (12) months from and after final acceptance under the Agreement, regardless whether the same were furnished or performed by Service Provider or by any of its subcontractors of any tier. Upon receipt of written notice from City of any such defect or nonconformances, the affected item or part thereof shall be redesigned, repaired or replaced by Service Provider in a manner and at a time acceptable to City. 15. Default. Each and every term and condition hereof shall be deemed to be a material element of this Agreement. In the event either party should fail or refuse to perform according to the terms of this agreement, such party may be declared in default thereof. 16. Remedies. In the event a party has been declared in default, such defaulting party shall be allowed a period of ten (10) days within which to cure said default. In the event the default remains uncorrected, the party declaring default may elect to (a) terminate the Agreement and seek damages; (b) treat the Agreement as continuing and require specific performance; or (c) avail himself of any other remedy at law or equity. If the non-defaulting party commences legal or equitable actions against the defaulting party, the defaulting party shall be liable to the non-defaulting party for the non-defaulting party's reasonable attorney fees and costs incurred because of the default. 17. Binding Effect. This writing, together with the exhibits hereto, constitutes the entire agreement between the parties and shall be binding upon said parties, their officers, employees, agents and assigns and shall inure to the benefit of the respective survivors, RFP 8053 Photo Voltaic Solar at Nix Farm Page 11 of 44 heirs, personal representatives, successors and assigns of said parties. 18. Indemnity/Insurance. a. The Service Provider agrees to indemnify and save harmless the City, its officers, agents and employees against and from any and all actions, suits, claims, demands or liability of any character whatsoever brought or asserted for injuries to or death of any person or persons, or damages to property arising out of, result from or occurring in connection with the performance of any service hereunder. b. The Service Provider shall take all necessary precautions in performing the work hereunder to prevent injury to persons and property. c. Without limiting any of the Service Provider's obligations hereunder, the Service Provider shall provide and maintain insurance coverage naming the City as an additional insured under this Agreement of the type and with the limits specified within Exhibit , consisting of one (1) page, attached hereto and incorporated herein by this reference. The Service Provider before commencing services hereunder, shall deliver to the City's Director of Purchasing and Risk Management, P. O. Box 580 Fort Collins, Colorado 80522 one copy of a certificate evidencing the insurance coverage required from an insurance company acceptable to the City. 19. Entire Agreement. This Agreement, along with all Exhibits and other documents incorporated herein, shall constitute the entire Agreement of the parties. Covenants or representations not contained in this Agreement shall not be binding on the parties. 20. Law/Severability. The laws of the State of Colorado shall govern the construction interpretation, execution and enforcement of this Agreement. In the event any provision of this Agreement shall be held invalid or unenforceable by any court of competent jurisdiction, such holding shall not invalidate or render unenforceable any other provision of this Agreement. 21. Prohibition Against Employing Illegal Aliens. Pursuant to Section 8-17.5-101, C.R.S., et. seq., Service Provider represents and agrees that: a. As of the date of this Agreement: 1. Service Provider does not knowingly employ or contract with an illegal alien who will perform work under this Agreement; and 2. Service Provider will participate in either the e-Verify program created in Public Law 208, 104th Congress, as amended, and expanded in Public Law 156, 108th Congress, as amended, administered by the United States Department of Homeland Security (the “e-Verify Program”) or the Department Program (the “Department Program”), an employment verification program established pursuant to Section 8-17.5-102(5)(c) C.R.S. in order to confirm the employment eligibility of all newly hired employees to perform work under this Agreement. b. Service Provider shall not knowingly employ or contract with an illegal alien to perform work under this Agreement or knowingly enter into a contract with a subcontractor that knowingly employs or contracts with an illegal alien to perform work under this Agreement. RFP 8053 Photo Voltaic Solar at Nix Farm Page 12 of 44 c. Service Provider is prohibited from using the e-Verify Program or Department Program procedures to undertake pre-employment screening of job applicants while this Agreement is being performed. d. If Service Provider obtains actual knowledge that a subcontractor performing work under this Agreement knowingly employs or contracts with an illegal alien, Service Provider shall: 1. Notify such subcontractor and the City within three days that Service Provider has actual knowledge that the subcontractor is employing or contracting with an illegal alien; and 2. Terminate the subcontract with the subcontractor if within three days of receiving the notice required pursuant to this section the subcontractor does not cease employing or contracting with the illegal alien; except that Service Provider shall not terminate the contract with the subcontractor if during such three days the subcontractor provides information to establish that the subcontractor has not knowingly employed or contracted with an illegal alien. e. Service Provider shall comply with any reasonable request by the Colorado Department of Labor and Employment (the “Department”) made in the course of an investigation that the Department undertakes or is undertaking pursuant to the authority established in Subsection 8-17.5-102 (5), C.R.S. f. If Service Provider violates any provision of this Agreement pertaining to the duties imposed by Subsection 8-17.5-102, C.R.S. the City may terminate this Agreement. If this Agreement is so terminated, Service Provider shall be liable for actual and consequential damages to the City arising out of Service Provider’s violation of Subsection 8-17.5-102, C.R.S. g. The City will notify the Office of the Secretary of State if Service Provider violates this provision of this Agreement and the City terminates the Agreement for such breach. 22. Special Provisions. Special provisions or conditions relating to the services to be performed pursuant to this Agreement are set forth in Exhibit " " - Confidentiality, consisting of ( ) pages, attached hereto and incorporated herein by this reference. RFP 8053 Photo Voltaic Solar at Nix Farm Page 13 of 44 CITY OF FORT COLLINS, COLORADO a municipal corporation By:_______________________________ Gerry Paul Director of Purchasing and Risk Management Date:_____________________________ ATTEST: _________________________________ City Clerk APPROVED AS TO FORM: ________________________________ Assistant City Attorney By:_______________________________ __________________________________ PRINT NAME __________________________________ CORPORATE PRESIDENT OR VICE PRESIDENT Date:_____________________________ RFP 8053 Photo Voltaic Solar at Nix Farm Page 14 of 44 EXHIBIT INSURANCE REQUIREMENTS 1. The Service Provider will provide, from insurance companies acceptable to the City, the insurance coverage designated hereinafter and pay all costs. Before commencing work under this bid, the Service Provider shall furnish the City with certificates of insurance showing the type, amount, class of operations covered, effective dates and date of expiration of policies, and containing substantially the following statement: “The insurance evidenced by this Certificate will not reduce coverage or limits and will not be cancelled, except after thirty (30) days written notice has been received by the City of Fort Collins.” In case of the breach of any provision of the Insurance Requirements, the City, at its option, may take out and maintain, at the expense of the Service Provider, such insurance as the City may deem proper and may deduct the cost of such insurance from any monies which may be due or become due the Service Provider under this Agreement. The City, its officers, agents and employees shall be named as additional insureds on the Service Provider 's general liability and automobile liability insurance policies for any claims arising out of work performed under this Agreement. 2. Insurance coverages shall be as follows: A. Workers' Compensation & Employer's Liability. The Service Provider shall maintain during the life of this Agreement for all of the Service Provider's employees engaged in work performed under this agreement: 1. Workers' Compensation insurance with statutory limits as required by Colorado law. 2. Employer's Liability insurance with limits of $100,000 per accident, $500,000 disease aggregate, and $100,000 disease each employee. B. Commercial General & Vehicle Liability. The Service Provider shall maintain during the life of this Agreement such commercial general liability and automobile liability insurance as will provide coverage for damage claims of personal injury, including accidental death, as well as for claims for property damage, which may arise directly or indirectly from the performance of work under this Agreement. Coverage for property damage shall be on a "broad form" basis. The amount of insurance for each coverage, Commercial General and Vehicle, shall not be less than $1,000,000 combined single limits for bodily injury and property damage. In the event any work is performed by a subcontractor, the Service Provider shall be responsible for any liability directly or indirectly arising out of the work performed under this Agreement by a subcontractor, which liability is not covered by the subcontractor's insurance. RFP 8053 Photo Voltaic Solar at Nix Farm Page 15 of 44 EXHIBIT CONFIDENTIALITY IN CONNECTION WITH SERVICES provided to the City of Fort Collins (the “City”) pursuant to this Agreement (the “Agreement”), the Service Provider hereby acknowledges that it has been informed that the City has established policies and procedures with regard to the handling of confidential information and other sensitive materials. In consideration of access to certain information, data and material (hereinafter individually and collectively, regardless of nature, referred to as “information”) that are the property of and/or relate to the City or its employees, customers or suppliers, which access is related to the performance of services that the Service Provider has agreed to perform, the Service Provider hereby acknowledges and agrees as follows: That information that has or will come into its possession or knowledge in connection with the performance of services for the City may be confidential and/or proprietary. The Service Provider agrees to treat as confidential (a) all information that is owned by the City, or that relates to the business of the City, or that is used by the City in carrying on business, and (b) all information that is proprietary to a third party (including but not limited to customers and suppliers of the City). The Service Provider shall not disclose any such information to any person not having a legitimate need-to-know for purposes authorized by the City. Further, the Service Provider shall not use such information to obtain any economic or other benefit for itself, or any third party, except as specifically authorized by the City. The foregoing to the contrary notwithstanding, the Service Provider understands that it shall have no obligation under this Agreement with respect to information and material that (a) becomes generally known to the public by publication or some means other than a breach of duty of this Agreement, or (b) is required by law, regulation or court order to be disclosed, provided that the request for such disclosure is proper and the disclosure does not exceed that which is required. In the event of any disclosure under (b) above, the Service Provider shall furnish a copy of this Agreement to anyone to whom it is required to make such disclosure and shall promptly advise the City in writing of each such disclosure. In the event that the Service Provider ceases to perform services for the City, or the City so requests for any reason, the Service Provider shall promptly return to the City any and all information described hereinabove, including all copies, notes and/or summaries (handwritten or mechanically produced) thereof, in its possession or control or as to which it otherwise has access. The Service Provider understands and agrees that the City’s remedies at law for a breach of the Service Provider’s obligations under this Confidentiality Agreement may be inadequate and that the City shall, in the event of any such breach, be entitled to seek equitable relief (including without limitation preliminary and permanent injunctive relief and specific performance) in addition to all other remedies provided hereunder or available at law. RFP 8053 Photo Voltaic Solar at Nix Farm Page 16 of 44 EXISTING PV SYSTEM AT NIX FARM SHOP BUILDING RFP 8053 Photo Voltaic Solar at Nix Farm Page 17 of 44 RFP 8053 Photo Voltaic Solar at Nix Farm Page 18 of 44 RFP 8053 Photo Voltaic Solar at Nix Farm Page 19 of 44 RFP 8053 Photo Voltaic Solar at Nix Farm Page 20 of 44 RFP 8053 Photo Voltaic Solar at Nix Farm Page 21 of 44 Abound  Doc.  3111704  Rev  C Page  1 Important Notes on Project Design, Installation and Registration This document highlights some considerations that must not be overlooked in order to maintain warranty coverage. This document is not a replacement for the Safety and Installation Manual (Doc # 3105410) and the Mounting Guidelines (Doc # 3106761) or other documents referenced below. Please be sure to read all applicable documents thoroughly and do not solely rely on the supplemental notes below. Safety • Danger: Risk of electrical shock exists in the event of physical contact with a cracked or damaged module. Contact with the damaged area may result in a lethal shock and/or an arc flash event. If a module is found to be cracked, electrically isolate it immediately and do not contact the module before doing so. Performance modeling • Use the latest versions of Abound’s PVSYST / PVSOL files in accordance with the Abound System Modeling Application Note (Doc #3111714). These files are available from Abound through the customer portal at abound.com. Old versions of parameter files or those obtained from third parties might not be accurate. Warranty activation • Each project must be registered through Abound’s customer portal for Abound’s warranty to apply. Electrical design • Maximum allowable system voltage is 1000V, although local authorities might have lower limits. • At project sites where 600V is the maximum allowable voltage, the usual string length is 10, 11, or 12. • At project sites where 1000V is the maximum allowable voltage, the usual string length is 18. • Maximum reverse current rating and maximum short circuit fuse rating are both 4A. Please reference the Series/Parallel Configuration Guide (Doc # 3111670) for guidance on stringing, fusing and use of diodes. • Only use inverters with transformers or galvanically isolated transformerless inverters. Strings must have a negative ground for warranty to apply. Mechanical design • Portrait mounting orientation is required to prevent systematic and complete shading of individual cells, which can cause module damage. For installations with tilt angles <5%, landscape orientation is acceptable if there exists no possibility of row-to-row shading or other systematic shading of complete cells. • Module thickness is 8.1mm (-0.4 / + 0.8) and module clips used must safely accommodate full range. • Module clamping limit is 19 psi. Pressure in excess of this limit could compromise the edge seal. • An anti-slip mechanism is recommended for all installations with a tilt angle >5°. Customers should determine with their racking provider whether anti-slip mechanisms are required for a given configuration. • Mounting clips must be tested by Abound. Please reference Abound’s Mounting Guidelines (Doc # 3106761). Operating temperatures • Module temperature should not exceed 85°C (185°F). In most standard PV configurations ambient temperatures of 48°C (118°F) or below will result in module temperatures below 85°C. Installation suggestions • For systems where access to the back of the modules for cable connection will be limited, it is more efficient to work from right-to-left than from left-to-right due to the location of the junction box and the cable lengths. • If the geometry of the clips is such that it is difficult to slide the modules into the clips prior to tightening, application of liquid hand soap to the rubber can reduce friction and make insertion easier. Abound Solar l 0 Module label Bar Code Std EAN 128 of the serial number Module serial number. Same as etched on the glass. 14 digits. 01: Site 1 1: Cell1 B: Scribe B 10: year 06: month 03: day 0405: sequential 4 digits of build for that day Module type. As defined by part nomenclature. Depending on JV test reading Power Bin. A function of test results. Product table defines relationship between Bin and actually JV test reading Nominal specification values. Related to power BIN Static values Standard warnings Recycling marks and Certification marks if any available Standard recycling instructions Country of manufacturing Abound Logo and location Abound Solar l 1 Box Label Place and country of manufacturing Bar code of BOX serial number. Std EAN 128 9 digits. 3 site-line/6 sequential Box serial number. Created by Assembly line Module type. Module type. As defined by part nomenclature. Depending on test reading. Same value as printed on module label Pack number: combination of BOM revision + Qty of modules in the box + Cell code + date code “YYWW” 2D Bar code. Details defined later in this document Abound Solar l 2 BOX label bar-codes Box number bar code Ean 128 No parsing, just the box number as defined by ATS Pack number number bar code Datamatrix 2D DPI - 96 Combination of Item#,Box#,Pack# with a parsing scheme to be read by RFS SW Document # 3105410 Rev B Effective December 7, 2010 AB1-Series Photovoltaic Modules Safety and Installation Manual Please read this manual carefully before installing Abound Solar modules. Abound Solar, Inc. www.abound.com Abound Solar Safety and Installation Instructions AB1-Series Page 1 Introduction Thank you for selecting Abound Solar photovoltaic modules. Abound Solar products provide high efficiency with long-term stability. This instruction manual provides safety and installation instructions for Abound Solar’s AB1- Series of products. About this Manual “Bold Italicized” (and quoted) items have a document reference number which appears in Section 9.0, References. Figures are referenced by section number; prior to section 4.0, there are no figures in this document. Table of Contents 1.0 Compliance Information ................... 1 2.0 Module Overview ............................. 1 3.0 Safety .............................................. 2 4.0 Installation ....................................... 3 4.1 Mechanical installation ................. 3 4.2 Electrical installation .................... 5 5.0 Operation and Maintenance ............ 7 6.0 Disposal and Recycling ................... 7 7.0 Warranty Terms and Conditions ...... 8 8.0 Disclaimer of liability ........................ 8 9.0 References ...................................... 8 10.0 Product Label .................................. 9 1.0 Compliance Information TÜV ID#: 0000018894 UL File #: E320912 Report #: US-UL-10-0009-PV 2.0 Module Overview Abound Solar modules are comprised of two sheets of glass that are bonded together. The interior of this assembly contains a semiconductor film, which will produce electricity when exposed to sunlight. Wires with industry standard MC4 style connectors provide for the electrical connections. The junction box is on the rear of this module assembly and provides strain relief to the wires. These are frameless modules. Each module weighs about 12 kg, which is about 25 pounds. Ratings These modules have been evaluated by Underwriters Laboratories, Inc., to meet or exceed a positive or negative loading of 2,400 N/m2 (50 lbs/ft2). Abound Solar Safety and Installation Instructions AB1-Series Page 2 3.0 Safety All instructions should be read and understood before attempting to install, wire, operate, and/or maintain the photovoltaic module. Caution: Risk of Electrical Shock PV modules generate DC electrical energy when exposed to sunlight or other light sources. Contact with electrically active parts of the module such as terminals can result in burns, sparks, and lethal shock whether the module is connected or disconnected. The shock hazard increases as modules are connected in parallel, producing higher current, and as modules are connected in series, producing higher voltage. Caution: Risk of Broken Glass. Since the module consists primarily of glass, the possibility of broken glass exists. Broken glass can be sharp and cause injury if not handled with protective equipment such as gloves and eyewear. Carefully plan for installation: Prior to design of the system and installation of the product, please make sure that you have the latest versions of all applicable product documentation. Check that all other system components (inverters, wires, racks, balance of system materials, etc.) are mechanically and electrically compatible. Do not artificially concentrate sunlight on a module. Pay attention to the design of the PV system and electrical capacity of system components (especially the inverter), because under certain conditions this module may generate more than its STC rated power (PMPP). Do not remove modules from packaging until ready to install. If it is necessary to store modules prior to installation, keep them indoors in original shipping containers. It is required that the installation meet all requirements of local and applicable codes – such as the latest National Electrical Code (USA) or Canadian Electrical Code (Canada) or other national or international electrical standards.. Safety Application: Class A: General access, hazardous voltage, hazardous power applications. Module Meets Safety Class II Handling precautions Protective gloves should be worn when Abound Solar Safety and Installation Instructions AB1-Series Page 3 Do not carry a module by its wires or junction box. Do not drop or place heavy items or tools on the surface of the module. Never leave a module unsupported or unsecured. Do not use or install broken modules. Do not allow any foreign objects such as clips or tools to damage, intrude or penetrate into the edge seal. Do not disassemble the module, or remove any part installed by the manufacturer. Do not treat any portion of the module with paint or adhesives to avoid damage to the module, inoperable conditions, or reducing the module's functionality. Do not penetrate any portion of the module with screws, drills, or any other foreign object. Do not set or strike modules on their edges or corners. Do not disconnect plugs while under load. Make sure you comply with all local and national codes and permit requirements. 4.0 Installation To ensure safe and proper application, prior to installation and activation of warranty, all applications must be submitted and acknowledged through Abound Solar’s “Project Architecture Report (PAR)” process. Installations in Canada must be in accordance with CSA C22.1, Safety Standard Electrical installations, Canadian Electrical Code, Part 1. 4.1 Mechanical installation Mounting safety Caution: Modules should be handled with care during installation, as heavy impact on the front, back or edges could result in damage to the module. Do not attempt to install the modules in high wind or wet conditions. All installations must comply with safety laws. Check applicable building codes to ensure that the construction or structure (roof, façade, support, etc.) where the modules are being installed has enough strength. For modules mounted on roofs, special construction or structures may be required to help provide proper installation support. Both roof construction and module installation design have an effect on the fire resistance of a building. Improper installation may contribute to fire hazards. Additional devices such as ground faults, fuses, and disconnects may be required. Abound Solar Safety and Installation Instructions AB1-Series Page 4 Modules should be firmly fixed in place in a manner suitable to withstand all expected loads, including wind and snow loads. Operating conditions The ambient operating temperature must be between -20°C (-4°F) and 45°C (113°F). The temperature limits are defined as the monthly average low and high of the installation site. The pressure load of the installation site should not exceed 2,400 N/m2 (50PSF); testing has been performed to this rating per UL procedures. For optimal performance, avoid operating modules where: Modules could experience shading from seasonal sunlight variation, structures, or passing objects. Exposure to salt water may occur. Frequent or large hail, ice, and/or heavy snow occur. Air pollution, chemically active vapors, acid rain, soot, etc. are excessive. Racking Appropriate material should be used for mounting hardware to prevent the module, mounting structure, or hardware itself from experiencing decay or corrosion. For roof-mounted systems, clearance between the roof surface and module frame is required to allow cooling air to circulate around the back of the module. This also allows any condensation or moisture to dissipate. Install modules so that air can circulate between the roof and the module. Leave a minimum of 100 mm of clearance between the roof and the module surface. The mounting structure must not cause any twist or stress to be placed on the modules. Mounting Orientation Abound Solar AB1-Series solar modules should typically only be installed in a portrait orientation where the long dimension is perpendicular to the ground. Be especially careful to avoid conditions that may shade one entire cell of the module; shading of an entire cell over prolonged periods may cause permanent damage to the module. The module should be mounted so the junction box is towards the upper half of the module. This will minimize the possibility of water ingress into the junction box. Frame Abound Solar AB1-Series solar modules are intended to be installed without a frame. Rails The mounting rails must provide support for the modules. To allow the modules to comply with Abound Solar Safety and Installation Instructions AB1-Series Page 5 between the edge of the rubberized clip and the edge of the module to allow for thermal expansion. The mounting contact area that each clip should have on the module is a minimum width of10 mm, by a minimum length of 70 mm. The clip should not extend over 12 mm on the topside of the module to avoid intrusion over active cells. The mounting clips which have been successfully tested through the UL process are made from aluminum with a material thickness of 4 mm. It is acceptable to have additional overlap on the bottom-side of the modules as this will not interfere with the sunlight gathering capability of the active cells. The clips should be engineered so they do not provide excessive compression of the module. Please refer to the “AB1-Series PV Module Mounting Application Note” for further information. Figure 4.0 Panel Mechanical Reference Safety Clip The module must be supported in such a way as to avoid slippage due to gravity, wind, and seasonal expansion and contraction issues. With some racking configurations, this consists of a safety clip which is placed along the bottom edge of the module. Additional information on the design of mounting equipment for the Abound Solar AB1-Photovoltaic module may be found in the “AB1 Mounting Application Note”. 4.2 Electrical installation Guidelines Before installing modules, contact the appropriate authorities to determine permissions, installation and inspection requirements to follow that apply to your site and installation. Follow all installation and inspection requirements, complying with local law. If not otherwise specified, it is recommended that requirements of the latest National Electrical Code (USA) or other similar international electrical standard be followed. Rated electrical characteristics are within ±10% of measured values at Standard Test Conditions (STC) of: Irradiance of 1000 W/m2, 25°C cell temperature, and solar spectral irradiance per ASTM E 892. Inverter Selection The Abound AB-1 modules should be utilized only in a negatively grounded system utilizing a transformer based or otherwise galvanically isolated inverter. Abound Solar Safety and Installation Instructions AB1-Series Page 6 Use only PV rated stranded or solid copper single-conductor cable which is UV/sunlight resistant and rated 600V for the US and 1000V Europe with temperature rating of -40°C to +90°C with a minimum gauge of 14AWG and 6mm minimum cable diameter for modules and interconnect wiring that is exposed to weather. There are no wire clips supplied with the module. If wire clips are used, ensure that they are of sufficient specification to hold a 6mm diameter cable. When routing the cable, do not exceed the minimum bend radius of the cable, which is 4X the diameter, or 24 mm. Under normal conditions, a photovoltaic module may experience conditions that produce more current and/or voltage than reported at STC. Refer to section 690-8 of the National Electrical Code (USA) or equivalent for additional multiplying factors which may be applicable when determining voltage ratings, conductor capacities, fuse sizes, and size of controls connected to the module output. General Wiring Guidelines All wiring should be done in accordance with applicable electrical codes. A qualified, licensed professional should do all wiring. Wiring should be protected to help ensure personal safety and to prevent its damage. The wires should be secure and routed in an appropriate, water free wire way. All modules connected in series should be of the same module number and/or type. Use copper wire that is PV system rated; it must be sunlight resistant and insulated to withstand the maximum possible system open circuit voltage. Wiring Connections Use only approved MC4 or compatible connectors. When connecting the MC4 connectors, fully insert and engage both locking tabs. The wire length on the module is 600 mm; this is enough length to allow the modules to be connected in series when mounted next to each other in portrait mode. Series Connections The modules are intended to be wired in series within each string. The maximum number of modules which can be wired in series is dependent upon the local codes and the inverter dc input voltage limitations. Consult the latest datasheet for Voc and the appropriate temperature compensation of the modules being Abound Solar Safety and Installation Instructions AB1-Series Page 7 The required rated voltage for such overcurrent protective devices shall be based on the rated open-circuit voltage corrected for expected ambient temperature. The open-circuit voltage is the sum the open-circuit voltage of the series connected PV modules. Note that this value can greatly exceed the maximum power point (mpp) voltage. Parallel Connections In jurisdictions which are not covered under the US NEC, it is typical to wire several strings in parallel prior to combining these strings into one fuse. The individual strings are referred to as substrings, and the overall series/parallel combination is referred to as a superstring. For such applications, no more than three substrings should be connected in parallel without the use of blocking diodes. With blocking diodes, no more than six strings should be connected in parallel. Each substring should have its own blocking diode. In such applications, the size of the current limiting device must also be adjusted based on the expected output of the modules. The overcurrent device should be approximately 1.5X the combined rating of the paralleled strings. For more information on this topic please refer to the “AB1 Series/Parallel Configuration Guide”. Conduits For applications where wire conduits are used, follow the applicable codes for outdoor installation of wires in conduits. Verify that all fittings are properly installed to protect wires against damage and prevent moisture intrusion. Prior to Commissioning If the remaining system is not ready for commissioning immediately after the modules have been mounted on the racking, the modules should be left in open circuit no more than 90 days. Do not short circuit the modules; permanent damage may result. 5.0 Operation and Maintenance Under normal operating conditions, the modules should not require any maintenance. However, due to local conditions, the modules may become soiled. It is up to the site operator to determine if cleaning is appropriate. Cleaning Regular maintenance may help to maintain optimal system performance. Under most conditions, normal rainfall is sufficient to keep the module glass clean if the module is tilted. If the module's front surface becomes dirty, Abound Solar Safety and Installation Instructions AB1-Series Page 8 the “Recycling and Return Material Authorization (RMA) Process” manual. Abound Solar modules should not be discarded into a landfill; they must be returned to Abound Solar for recycling. Modules with broken glass cannot be repaired and should not be used since they may produce electrical shock on contact. Broken or damaged panels must be handled carefully and disposed of properly. Place broken modules in Abound Solar packaging for transport to a dedicated recycling facility. Contact Abound Solar for additional details. 7.0 Warranty Terms and Conditions Please refer to Abound Solar’s Warranty Terms and Conditions for warranty terms and product return policies. These terms are administered on a contract basis; please refer to you sales contract. Please note that any warranty is valid only for commissioned projects; commissioned projects require the completion of a “Project Architecture Report”. The modules are designed only to be installed once and demounting and remounting into a new site will void the warranty. Additionally, the “Product Registration Procedure” must be followed. 8.0 Disclaimer of liability Abound Solar does not assume responsibility and expressly disclaims liability for loss, damage, or expense arising out of, or in any way connected with failure to follow handling or installation procedures as prescribed in this manual. For claims arising from issues not related to installation or maintenance, contact your module supplier. For further information, please visit www.abound.com or contact your Abound Solar authorized representative. All details regarding Abound Solar’s offering are subject to the terms and conditions set forth in Abound Solar’s agreement with its customers. Unless otherwise indicated, all electrical characteristics +/-10%. Specifications are subject to change without notice due to process adjustment and product improvements. Please check with the latest product specifications for updates. 9.0 References The following documents are available through Abound Solar. Please contact Abound directly for information on the latest revisions. Abound Solar Safety and Installation Instructions AB1-Series Page 9 10.0 Product Label Below is a sample image for the product label on an AB1-70B module. Subject: AB1 Series/Parallel Configuration Guide Series Connections The Abound AB1 modules are intended to be wired in series within each string. The maximum number of modules which can be wired in series is dependent upon the local codes and the inverter dc input voltage limitations. It is imperative not to exceed local code limitations and the operating voltages of the chosen inverter; local codes will dictate which temperature requirements must be met – some specify coldest on record, some specify average. Consult the latest datasheet for Voc and the appropriate temperature compensation of the modules being used. For example, if the Voc of a module is specified as 44V, and the minimum recorded temperature is -20C, and the voltage temperature coefficient is -0.3%/C. The expected, combined Voc voltage from a 18 module string at this temperature would be: 44Voc/module x (1+((-0.003/C x (-20C-25C))) x 18 modules/string = 899 Voc/string. This is acceptable for a 1000V inverter. Note also that the cabling on the AB1 modules is rated for 1000V maximum (IEC) and 600V maximum (UL). Parallel Connections In jurisdictions which are not covered under the US NEC, it is typical to wire several strings in parallel prior to combining these strings into one fuse. The individual strings are referred to as substrings, and the overall series/parallel combination is referred to as superstrings. For such applications, no more than three substrings should be connected in parallel without the use of blocking diodes. With blocking diodes, no more than six strings should be connected in parallel. Each substring should have its own blocking diode: Fuse Rating for such parallel applications In such applications, the size of the current limiting device must also be adjusted based on the expected output of the modules. The overcurrent device should be approximately 1.5X the combined rating of the paralleled strings. To other modules in string To other modules in string Three or fewer strings per fuse Four or more strings per fuse To Inverter To Inverter Abound Solar Mounting Application Note AB1-Series Page 1 Document #3106761 Rev A Effective 18 May 2010 AB1-Series Photovoltaic Modules Mounting Application Note Abound Solar, Inc. www.abound.com Overview The purpose of this application note is to help guide system designers by providing the mechanical requirements for mounting Abound Solar’s AB1-Series of Photovoltaic Modules and suggesting possibilities for mounting techniques. Abound Solar provides this information only as a minimal starting point, and compliance with the information contained herein is not a guarantee of an approved photovoltaic system. Contents 1.0 Safety ................................................... 1 2.0 The AB1 Module .................................. 1 3.0 Clips ..................................................... 3 3.1 Approved Clips ................................. 3 4.0 Racking ................................................ 4 1.0 Safety All instructions should be read and understood before attempting to install, wire, operate, and/or maintain the AB1 photovoltaic modules. Be aware that metal rails can have sharp edges. Please make sure that your designs allow for the safe installation of equipment. DANGER: Risk of Electrical Shock PV modules generate DC electrical energy when exposed to sunlight or other light sources. Contact with electrically active parts of the module such as terminals can result in burns, sparks, and lethal shock whether the module is connected or disconnected. Caution: Risk of Broken Glass. Since the AB1 Module consists primarily of glass, the possibility of broken glass exists. Broken glass can be sharp and cause injury if not handled with protective equipment such as gloves and eyewear. Specifications are subject to change; please contact Abound Solar to ensure that you are utilizing the most current information available. 2.0 The AB1 Module Overview: Abound Solar modules are comprised of two sheets of glass that are bonded together. There is a gap between these two pieces of glass. The construction is such that there are reinforcing beads within this area, giving the module exceptional strength. The interior of this assembly contains the semiconductor film, which will produce electricity when exposed to sunlight. Cables with industry Abound Solar Mounting Application Note AB1-Series Page 2 Document #3106761 Rev A Effective 18 May 2010 Backbox: The backbox is located on the rear of the non-semiconductor back side of the module, and its purpose is to provide strain relief for the two interconnection cables. It is approximately 16mm thick. The backbox is sealed and should never be opened; preferably, the modules should be oriented so the leads from the backbox are pointing toward the ground to minimize the possibility of water ingress into the backbox. Cables: The cables are designed for optimum efficiency, and they are long enough to connect side-by-side modules when placed with reasonable spacing. The effective length of the cables is approximately 600 mm. The positive (+) cable is on the left when viewed from the rear of the module, which should always be placed on the eastern side of the module when mounted in the Northern Hemisphere. The (+) connector has a male plastic housing with a female metal ferrule inside. Frames: The modules do not have a frame. Abound Solar AB1-Series solar modules are intended to be installed in most applications without a frame. However, it is understood that under special circumstances, such as an extremely high wind load, a frame may be desirable. Please discuss the application with Abound Solar prior to installing a frame. Grounding: Since the modules do not have a frame, nor do they have any exposed metal components, there is no need to ground any part of the module. In fact, the module must be insulated from contact with metallic surfaces. Clips: Modules must be mounted with a minimum of 4 rubberized clips installed on the long (1200mm) module edges, with the centerline of the clips placed 275 mm +/- 25 mm from the short edge of the module as shown in the Figure 2.0. Typical rubberization is typically made from Ethylene Propylene Diene Monomer (EPDM) – or similar material - contacting the module. Be sure to follow the clip manufacturer’s recommendations; a minimum gap of 1 mm is required between the edge of the rubberized clip and the edge of the module to allow for thermal expansion. The amount of overlap that the clip should have on the module is a maximum distance of 12 mm, minimum of 10 mm. It is acceptable to have additional overlap on the bottom-side of the modules as this will not interfere with the electrical properties of the active cells. Thickness: The typical module thickness is 8.1 mm. Due to manufacturing process tolerances, Abound Solar Mounting Application Note AB1-Series Page 3 Document #3106761 Rev A Effective 18 May 2010 more than 10 mm of the topside of the module. A representative safety hook is illustrated in Figure 2.1. Figure 2.1 Safety Hook 3.0 Clips The clips themselves should provide a contact area of no smaller than 70mm x 10 mm. On the front of the module, it is imperative to not encroach upon the active cell area, which lies about 12mm in from the edge of the glass. On the rear of the module, there is no constraint on how far the clip may encroach on the module. The farther the clip protrudes on the rear of the module, the higher the load bearing capability will be. Note that in some installations the overall impedance of the system will be affected by this overlap - creating an electrical backplane - that may affect the operation of some inverters under certain conditions. The amount of overlap, and the distance between the back of the module and the clip and/or rail, will affect the amount of parasitic capacitance that is then built into the system. This capacitance, although low on a per panel basis, may add up to a significant amount on a large installation. Consult your inverter manufacturer for more information. 3.1 Approved Clips Approved clips have been tested to ensure compliance with UL and IEC standards, including IEC 61646, 10.16 (applied load test) and IEC 61646 10.15.2 (deflection over distance). New clip and mounting system designs must comply with these standards. The following clips are approved for use on Abound AB1 Series Photovoltaic Modules: Manufacturer Model Number Schletter http://www.schletter- inc.us/ ECO-8 Contact Abound Solar to initiate the approval process on newly designed clips. Abound Solar Mounting Application Note AB1-Series Page 4 Document #3106761 Rev A Effective 18 May 2010 4.0 Racking The mounting structure must not cause any twist or stress to be placed on the modules. Rails: The mounting rails must provide support for the modules. To allow the modules to comply with the safety requirements, the clips, which mount to the rails, must be placed in specific locations on the modules. These locations are shown in Figure 2.0. Avoid placing rails directly beneath the label, which is located on the backside of the module. The label is located 25 mm from the outside of the long edge and is 600 mm from the short edge. For systems which will have more than one row of modules, it is often desirable to have symmetric mounting rails to simplify construction in the field. A suggested approach is to utilize rails that are mounted 610 mm apart, as shown in Figure 4.0. This will also allow enough clearance between modules – about 20 mm - for rain runoff, snow melt, and a reasonable safety clip. Layout: The panels can easily be placed side by side, making for an efficient layout as illustrated in Figure 4.1. Figure 4.0 Use of Symmetric Rails Figure 4.1 Portrait Mode, Side by Side Layout Horizontal Mounting Rails 610 mm 610 mm 610 mm Abound Solar, Inc. 2695 Rocky Mountain Ave Suite 100 Loveland, CO 80538 USA www.abound.com phone +1.970.619.5340 fax +1.970.488.3237 email info@abound.com Environmental Sustainability Cadmium Telluride Technology Abound Solar: Dedicated to clean energy Abound Solar, formerly AVA Solar, is a leading manufacturer of next-generation, thin-film photovoltaic modules. We believe we can transform the way energy is generated—and improve the health of our planet— while brightening the lives of people around the globe by ensuring an affordable supply of clean, renewable electricity. Abound Solar™ modules are manufactured to be the most environmentally sustainable solar photovoltaic technology available. Designed with recycling in mind, manufactured using the industry’s most energy efficient production process, and backed by a cradle-to-cradle recycling program, Abound Solar is leading the industry in environmental sustainability. Cadmium telluride is an excellent semiconductor for creating high-performance, low-cost solar modules for large-scale installations Cadmium telluride (CdTe) is a mature and robust photovoltaic technology that has significantly driven down the cost of solar energy while reducing the environmental footprint of production. • 98% less semiconductor required compared to crystalline silicon A layer of cadmium telluride just microns thick is sufficient to convert the sun’s energy into electricity. • Higher energy yields during real-world conditions Photovoltaics employing cadmium telluride perform better than alternative technologies in both high- temperature and low-light conditions leading to more energy produced per watt of capacity. • Lower energy required to manufacture The cadmium telluride deposition process utilized by Abound Solar requires far less energy than other technologies due to a proprietary design and fully- automated production equipment. CdTe technology; Document #CT090914 Cadmium Telluride Technology Environmental Sustainability Useful application of mining by-products Chemically stable compound Non-hazardous solar modules Fully-recyclable Cadmium telluride is a stable molecule that does not readily break down and propagate • Cadmium telluride is not water soluble2 and poses no risk to drinking water. • Melting point of 1041°C, 400° higher than the meting point of aluminum; it will not vaporize during residential fires.3 Copyright © 2009 Abound Solar, Inc. All rights reserved. Abound Solar and the Abound Solar logo are trademarks of Abound Solar, Inc. CdTe technology; Document #CT090914 Environmental sustainability of CdTe photovoltaic modules affirmed by scientific studies 1 A. Jager-Waldau, “Peer Review of Major Published Studies on the Environmental Profile of Cadmium Telluride (CdTe) Photovoltaic (PV) Systems” 2 P. Moskowitz, N. Bernholc, V. M. Fthenakis, R. Pardi, H. Steinberger, W. Thumm, “Environmental, Health and Safety Issues of Cadmium Telluride Photovoltaic Modules” 3 V. M. Fthenakis, M. Fuhrmann, J. Heiser, A. Lanzirotti, J. Fitts, W. Wang, “Emissions and Encapsulation of Cadmium in CdTe PV Modules During Fires” 4 K. Zweibel, V.M. Fthenakis, “Cadmium Facts and Handy Comparisons” To learn more abound Abound Solar™ modules, production process or Abound Solar’s commitment to the environment, please visit our website at: www.abound.com or email info@abound.com. Solar modules are an environmentally-friendly use of CdTe • Cadmium and tellurium are by-products of zinc and copper mining. • Encapsulating semiconductor in a glass-glass package sequesters cadmium for lifetime of the module.1 Abound Solar modules are non-hazardous • CdTe modules do not pose a risk during fires.3 • PV modules contain less cadmium than a C-size battery.4 Cradle-to-cradle recycling ensures sustainability • Abound Solar pre-funds collection and recycling of modules at end-of-life. • Recycling process returns materials back to useable streams of feedstock. Abound  DOC  10172D  -­‐  Printed  documents  are  uncontrolled. Page  1 Bus Tape Advisory Abound Solar has identified a potential problem with some AB1-series modules. Under certain conditions, the metal bus tape that collects current in these modules may lose electrical contact with the semiconductor layer, rendering the module non-functional. In some instances the module may sustain other damage during the failure. Identification The failure may be identified by one or more of the following: spot discoloration of the metal bus tape, high bus tape temperatures during operation, and, occasionally, cracking of the front glass. When present, the issue is usually manifest on the positive side of the module (opposite side from the etched barcode, same side as the back box). Safety Danger: Risk of electrical shock exists in the event of physical contact with a cracked module. Contact with the damaged area may result in a lethal shock and/or an arc flash event. If a module is found to be cracked, electrically isolate it immediately to remove series-string potentials to ground and do not touch the module before doing so. After electrical disconnection, affected modules should be promptly removed and replaced. Please refer to the AB1-Series Safety and Installation Manual (Doc-3105410) and to Abound’s Internal Array Safe Use Procedure (Doc-10937) for guidance on disconnecting and handling broken modules. This document is supplement to but not a replacement for the Safety and Installation Manual (Doc # 3105410) and the Mounting Guidelines (Doc # 3106761). Root Cause and Preventive Action The loss of electrical contact between the metal bus tape and semiconductor back metal is due to thermal fatigue from thermal cycling, which can occur during day/night intervals and/or full sun/cloud cover transitions. High operating temperatures and high daily solar irradiation can accelerate the fatigue. Abound has identified several variables which contributed to the susceptibility of some modules to this issue. Abound’s research and testing, in collaboration with partners, has resulted in more detailed specification of requirements for the bus tape and associated material, and Abound has made great strides with vendors in improving processes and controls and robustness of modules currently being produced. Unfortunately neither Abound nor its suppliers adequately tracked some key parameters related to the issue prior to mid 2011, and thus Abound cannot accurately predict which modules produced prior to then will exhibit susceptibility to this problem. Corrective Action Abound arrays should be visually inspected to identify the presence of this bus tape issue. Modules that exhibit the problem cannot be repaired and, thus, must be isolated and replaced with caution as noted above. Abound will provide replacements free-of-charge within the warranty period and will recycle broken modules at its expense. In order to execute module replacement, the PV Array that contains affected modules must be registered via Abound’s Module Registration Process and an RMA must be filed via Abound’s Customer Portal, which can be accessed at http://customerportal.abound.com If you are unfamiliar with the Registration and RMA process, please contact your Abound Solar Sales Representative for assistance. Abound is committed to working with customers to ensure that Abound systems meet customer and system owner expectations. Abound Technical Note - Rev A Page 1 Technical Note for Module Installations Prior to Commissioning – Avoiding Severe Degradation Summary: It is highly recommend that modules not be connected together into strings if the PVminus terminal of the string is not immediately connected to ground. Strings should not be allowed to float in open circuit. If modules must sit in open circuit for extended periods of time, it is preferred that they are isolated individually and not connected to each other into strings. Through the course of our continued monitoring of Abound field installations, Abound internal test arrays, and reliability lab testing, we have discovered a special circumstance where Abound modules could experience severe degradation as a result of Potential Induced Degradation (PID). PID is an industry-known phenomenon which degrades PV modules when exposed to voltages below ground. Abound is currently working to address this degradation mechanism, however current versions of modules will be susceptible to this issue. This is one of the main reasons that Abound requires transformer- based inverters or transformerless inverters equipped with grounding kits in PV systems. If module strings are connected together without being immediately connected to a grounded line, the strings will be forced to float. Since connected strings can sit with up to a 1000V potential during OC conditions, an ungrounded string will want to float about ground (forcing the bottom half of the string to experience negative voltages up to -500V). These conditions will induce PID degradation. It is recommended that if the module strings are not immediately connected to a grounded terminal, that the modules NOT be connected together to form strings that will sit in open circuit. We recommend that each individual module be left in the open circuit condition rather than being connected together into strings. This will put a maximum open circuit voltage of about -22V on the modules, which is significantly less susceptible to PID. Modules not connected in strings will be allowed to sit in open circuit up to 90 days per our Safety and Installation Manual. this value may vary by -0.4 mm and up to +0.8 mm. Any clips which are used must be able to accommodate this range of module thickness. The compressive force exhibited by the clips on the module should be no greater than 19 psi. Figure 2.0 Panel Mechanical Reference Safety Hook: When mounted in portrait mode with side clips, the module must be supported on the lower edge to prevent the module from sliding due to gravity and drag forces. A safety hook should be used to prevent sliding of the module. The location along the bottom edge of the module is not critical, but it should not cover standard MC4 style connectors provide for the electrical connections. A junction box is on the rear of this module assembly to provide strain relief to these cables. These are frameless modules. Each module weighs about 12 kg, which is about 26 pounds. This equates to a roof loading of 3.125 #/SF (15.25 kg/m2). Within Abound AB1 Photovoltaic Modules, the active cells are oriented along the long axis. This allows the maximum number of modules to be stacked in series before hitting the voltage limitation of the inverter, maximizing the obtainable electrical energy from each string. Because of this cell orientation, ‘portrait mode’ mounting orientation is desirable to minimize the possibility of complete shading of any one cell. Engineering CAD models of the AB1 modules are available; please contact Abound Solar for more details. Recycling and Return Material Authorization (RMA) Process (Section 6.0): Abound Solar Document #3106760 Project Architecture Report (Sections 4.0 and 7.0) Abound Solar Document: #3106497 AB1-Series Photovoltaic Module Mounting Application Note (Section 4.1) Abound Solar Document: #3106761 AB1 Inverter Compatibility Guide (Section 4.2) Abound Solar Document: #3111669 AB1 Series/Parallel Configuration Guide (Section 4.2) Abound Solar Document: #3111670 Abound Solar Product Registration Procedure (Section 7.0) Abound Solar Document #3109811 power output will likely be reduced. The front surface of the module may be cleaned with water and a soft cloth or sponge on a regular basis. It is recommended to clean the back surface only as needed. A mild non-abrasive detergent may be applied for persistent dirt. Do not use harsh cleaning materials or sharp instruments. Maintenance It is recommended to inspect the electrical and mechanical connections periodically for loose connections and corrosion. 6.0 Disposal and Recycling Abound Solar has invested in a recycling program to ensure that every aspect of the lifecycle of the module is environmentally responsible. A Return Materials Authorization (RMA) process must be followed to return materials. Further information will be found in used. It is imperative not to exceed local code limitations and the operating voltages of the chosen inverter. Typically, installation for series strings shall be no more than 12 modules for a 600V string taking in account Voc without temperature coefficient calculations. For 1000V strings no more than 20 modules shall be in a string. Blocking Diode Within normal installations the AB1 modules do not require the use of a blocking diode. For some applications, such as multi-paralleled superstrings (see the European applications below), a blocking diode may be required. Overcurrent Protection In jurisdictions falling under the US National Electrical Code (NEC), installations that contain more than two strings require overcurrent protection on each string. A 4-Amp (maximum) fuse or circuit breaker is recommended for each series-connected group of modules for over- current protection. Abound is working to rigorously test and verify operation with a variety of inverters and inverter topologies. Please refer to the “AB1 Inverter Compatibility Guide” for more information. Wiring specifications the safety testing that has been done, the clips, which mount to the rails, must be placed in specific locations on the modules. These locations are shown in the illustration below, and discussed in the ‘Clips’ section below as well. For systems which have more than one row of modules, it is suggested that the rails be mounted 610 mm apart. This will allow for a symmetric approach to mounting on the horizontal rails, as well as enough clearance between modules for a reasonable safety clip. Clips Modules are to be mounted with a minimum of 4 rubberized clips (with EPDM rubber – or similar material - contacting the module) installed on the long (1200mm) module edges, with the clips placed 295 mm +5/-45 mm from the module ends as shown in the Figure 4.0. Be sure to follow the clip manufacturer’s recommendations; typically a minimum gap of 1 mm is required Check and follow all safety precautions of other system components used. Site selection For stationary mounting, orient modules to face the average position of the sun. A fixed-tilt mounting is recommended, with a tilt range from 0 degrees to 50 degrees. Avoid installing modules where they may be shaded. Pay special attention to partially shading modules by objects such as buildings, trees, windmill blades, and poles during the daytime or due to seasonal sunlight variation. handling solar modules to protect against sharp objects or electric shock. Proper Personal Protective Equipment should be worn at all times. Do not stand or step on a module. Do not drop a module. Do not break the glass surfaces of a module. To avoid the hazard of electric shock and injury, covering the front surface of the modules with a dense, opaque material such as a cardboard box, during installation and handling of the modules is recommended. All Abound Solar modules are shipped with an intact junction box and edge seal. If either of these features is missing or appears damaged at time of delivery, please contact your module supplier.