Solar installation agreement template
A solar contract is a large purchase signed on a forecast: how much power the system will make and what it might save. This agreement is for a homeowner buying a system outright or with their own loan. It sets out the equipment, the estimate and what it isn't, the roof, the permits and the utility's approval. Read it below, then open it in SignMaster to send it.
Updated November 5, 2026 · 4 min read
The contract
Gray blanks are yours to fill in before you send. Each signer fills in the blanks in their color.
- You, before sending
- Homeowner
- Solar installer
Solar Installation Agreement
This Solar Installation Agreement (the "Agreement") is made on Agreement date between Installer company name, license number License number (the "Installer"), and Homeowner name (the "Homeowner").
1. The property
The system will be installed at Property address, which is served by the electric utility Electric utility. The Homeowner confirms that they own the property.
2. The system
- System size: System size in kW kW (DC).
- Solar panels: Panel count panels, make and model Panel make and model.
- Inverter or microinverters: Inverter make and model.
- Battery storage: Battery make and model.
- Mounting location: Mounting location.
- Monitoring: Monitoring system.
If listed equipment becomes unavailable, the Installer may substitute equipment of equal or better rating only with the Homeowner's written approval.
3. Production estimate
Based on the system design, the Installer estimates the system will produce about First-year kWh estimate kWh in its first year. This estimate assumes: Production assumptions. Actual production varies with weather, shading, dirt on the panels, equipment performance and other factors. The estimate is not a guarantee of production or of any saving on utility bills.
4. Incentives, utility rates and net metering
The Installer makes no promise about tax credits, rebates, incentives, utility rates or net metering. Whether they are available, and what they are worth, depends on laws, utility rules and the Homeowner's own tax situation, all of which can change. The Homeowner should confirm any incentive with their own tax adviser. The price in section 7 does not depend on any incentive being received.
5. Roof and site
The Installer inspected the roof and found: Roof condition assessment. Roof work needed before installation: Roof work needed first, which is the Homeowner's cost unless it is included in section 7. The Installer will seal and flash every roof penetration it makes and warrants those penetrations against leaks for Penetration warranty in years years. Removing and reinstalling panels for later roof work is not included.
6. Permits, association approval and interconnection
The Installer will apply for the building and electrical permits and submit the utility interconnection application. If the property is in a homeowners association, the Homeowner will obtain the association's approval before installation, and the Installer will supply the plans it needs. The Homeowner will sign any permit or utility forms that require the owner's signature. The system will not be switched on until the utility grants permission to operate. Delays by the building department, the utility or the association extend the schedule and are not a breach of this Agreement.
7. Price, payment and financing
The total price is Total price, paid as follows:
- A deposit of Deposit when this Agreement is signed.
- A payment of Installation payment when the panels and inverter are installed.
- The balance when Final payment milestone.
Financing: Financing arrangements. If the Homeowner's financing is not approved within Days for financing approval days, either party may cancel this Agreement and the deposit will be refunded. Any loan is a separate agreement between the Homeowner and the lender.
8. Schedule and access
Installation is expected on or about Estimated installation date and to take about Installation days days once permits and approvals are in hand. The Homeowner will give access to the roof, the attic, the electrical panel and the meter, and the power will be off for part of the installation.
9. Warranties
The Installer warrants its workmanship for Workmanship warranty in years years from the date the system is switched on. Panels, inverters and batteries carry their makers' product and performance warranties, which the Installer will register or hand over to the Homeowner. These warranties do not cover damage from storms, hail, falling objects, animals, changes made by others, or roof work done by others.
10. Ownership and care
The Homeowner owns the system once it is paid for in full. The Homeowner will keep the monitoring connected to the internet and give the system ordinary care. Before leaving, the Installer will show the Homeowner how to read production and how to shut the system down in an emergency.
11. Right to cancel
If the Homeowner signed this Agreement at their home or anywhere other than the Installer's place of business, they may cancel it within three business days, or longer where state law allows. The Installer will provide a written notice of cancellation and any disclosure documents the Homeowner's state requires for solar sales.
12. General terms
This Agreement is the whole agreement about the system and replaces earlier proposals. Changes must be in writing and signed by both parties. It is governed by the laws of the state of State. Electronic signatures count as original signatures.
Homeowner contact details
Phone: Homeowner phone Email: Homeowner email
I understand that the production estimate is not a guarantee and that no tax credit, rebate or saving is promised.
Homeowner
Solar installer
Opens it in SignMaster as a template you can edit and send.
A starting point, not legal advice. Have a lawyer review it for your state and situation.
On this page
What this agreement is, and isn't
This is a purchase and installation agreement: the homeowner owns the system once it's paid for. Leases and power purchase agreements, where a company owns the panels and sells the power, need different terms. If the customer finances through a lender, the loan documents are separate; this contract covers the work and the equipment.
Solar is also a trade where sales promises drive complaints. Production estimates, bill savings and tax incentives all depend on things you don't control. The template keeps each one honest: estimates are labeled as estimates, and incentives are the customer's to confirm with their own adviser.
What the template covers
- The system: size in kilowatts, panel count, panel and inverter models, any battery, the mounting location and the monitoring.
- Production estimate: first-year kilowatt-hours and the assumptions behind them, stated as an estimate rather than a guarantee.
- Roof and site: your assessment of the roof, who pays for roof work first, and a leak warranty on every penetration you make.
- Permits, HOA and interconnection: you apply for permits and the interconnection, and the system stays off until the utility grants permission to operate.
- Incentives: no promise about tax credits, rebates or net metering, and a price that doesn't depend on any of them.
- Price, payment and financing: a deposit, a payment at installation, the balance at the finish line you choose, and a way out if the loan isn't approved.
- Warranties: your workmanship warranty plus the panel and inverter makers' product and performance warranties.
- Ownership and cancellation: who owns and maintains the system, and the three-day notice for a sale made at home.
Promises to keep out of a solar contract
- A guaranteed bill amount. Utility rates and net metering rules change. Show the estimate and its assumptions, and leave savings out of the signed terms.
- A tax credit as a price cut. Incentives change and depend on the buyer's own taxes. Quote the full price and tell the customer to confirm any credit with a tax adviser.
- Installing on a roof with a few years left. Pulling a system to reroof costs real money, so write down the roof's condition and who pays to fix it first.
- Switching on before the utility approves. The contract should say the system stays off until permission to operate is granted.
- Assuming the HOA will say yes. If there's an association, make its approval a step before installation, with the homeowner applying and you supplying plans.
State solar rules
Some states require their own disclosures for residential solar sales, such as a standard disclosure form or a consumer guide the buyer must receive and sign, and some give a longer cancellation period. This template uses general wording, so check your state's list and send its documents with every contract.
How to send it with SignMaster
- 1
Open the template
Choose Use this template. It's set up with the homeowner signing first and your company countersigning once the deal is approved internally.
- 2
Add the system details
Fill in the gray blanks from your design tool: system size, panel count and models, the production estimate and its assumptions, and the payment schedule.
- 3
Put the design in the same envelope
Before sending, add the site plan, the production report and any state disclosure form to the envelope, so the homeowner reviews and signs one package instead of three emails.
- 4
The homeowner signs
They sign from the email link on any phone or computer, or at the kitchen table with Sign in person. They check the box confirming they understand the estimate isn't a guarantee before they sign.
- 5
Countersign and file
You sign last. Each of you gets the signed PDF with its certificate of completion, which your permit and interconnection files can point back to.
Homeowners who read Spanish
The signing page, emails and consent screen come in 6 languages, including Spanish, so a homeowner can work through the signing steps in their own language. The contract itself stays in the language you wrote it in. If you sell to Spanish-speaking customers, keep a Spanish version of the agreement as its own template and send that one.
Questions? Answers.
Should a solar contract guarantee production?
Not unless you're ready to pay when the system falls short. This template gives a first-year estimate with its assumptions and says plainly that it isn't a guarantee. Some installers sell a separate production guarantee with its own terms.
What is permission to operate?
The utility's approval to switch on a grid-connected system once it's installed and inspected. This template keeps the system off until it's granted and lets you tie the final payment to it.
Can a homeowner cancel a solar contract?
If it was signed at their home, the FTC's Cooling-Off Rule and state laws generally allow three business days to cancel, and some states allow longer. Give the cancellation notice with the contract, and check your state's solar rules.
Does this template work for a solar lease?
No. In a lease or power purchase agreement someone else owns the system, which needs different terms. Use this template when the homeowner is buying the system.
Sources
- FTC: Buyer's remorse, the FTC's Cooling-Off Rule · consumer.ftc.gov