1. KNOW YOUR INSTALLER You want to make sure that your installer is using highly-trained staff. How many installations have they done and how long have they been in business? You want to make sure your installer will be around to fulfill their warranty commitment.
2. METALLIC FLASHINGS: It is critical that your solar installer is using a metallic flashing for each and every roof penetration. This is the only tried and true way to ensure a 25 year leak-free installation. Using a sealant like butyl or silicone as your only means of protection does not provide a mechanical seal.
3. LIGHTNING PROTECTION: The installation of anything metal on your roof increases the potential for lightning damage. Installing an upsized ground of #6 (as opposed to the NEC required #10) and surge suppression is good practice to help protect the valuable electronics you have just purchased.
4. CHECK YOUR WARRANTY: Most installers offer a warranty on materials and craftsmanship. Standard warranties on inverters are 10 years. The warranties on the modules should be 25 years. While the standard warranties for craftsmanship are 5 years, some installers offer a 10 year warranty. When evaluating the legitimacy of a 10 year warranty you must consider the equipment manufacturers longevity as well as how long the installer has been in business.
5. USE CONSERVATIVE SREC VALUES: When reviewing your financial analysis, what are the SREC values included in the proposal? A reasonable estimate, given average historical trades is $300 or less. If your proposal includes a value higher than that, you may be disappointed.
6. COMPLIANCE WITH ALL STATE REGULATIONS: Solar projects in Pennsylvania with a value of $25,000 or more are eligible for PA Sunshine Grant funding. Part of the grant includes an agreement to comply with Prevailing Wage Laws. Non compliance can result in severe penalties for the system owner.
7. CHECK YOUR PRODUCTION NUMBERS: When reviewing your financial analysis, what are the projected kWhs for your system? Multiply your system size in kW by 1200 to determine a reasonable kWh output. If your proposal includes a value much higher than that, it is incorrect.
8. HIDDEN TAXES: Funds received from a PA Sunshine Grant are taxable and a 1099 is issued. Also, be sure that your installer pays PA Use Tax on all equipment for which they did not pay a sales tax.
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