Plain-Language Solar Contract and Document Guide

What a good one includes

• A clear breakdown of the total system cost, including loan interest rates, lease escalation clauses, or cash payment milestones.
• An easy-to-understand explanation of your utility's current net metering policy and how it affects your return on investment.
• A summary of the installer's production guarantee, detailing what happens if the panels underproduce and how energy output is measured.
• A direct mapping of equipment warranties for panels, inverters, and racking systems, alongside who covers labor for repairs.
• A timeline highlighting key dates for engineering site audits, HOA approvals, permit filings, and estimated interconnection dates.
• A clear explanation of your options if you sell your home, detailing how the contract transfers to the next buyer.

Common mistakes to avoid

• Many buyers overlook annual lease payment escalator clauses that can quietly erase their projected energy savings over a decade.
• Homeowners often fail to check if installing solar panels voids their existing roof manufacturer's warranty.
• People frequently assume utility net metering rates are permanent, failing to plan for potential regulatory changes.
• A common error is assuming the solar installer's labor warranty lasts as long as the hardware manufacturer's product warranty.

Frequently asked questions