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Understanding Your Solar Contract

After you have picked your solar installer, you will obviously need to sign a contract. This is usually done online electronically. Before you sign anything though, you should thoroughly read and understand your contract.

I was pretty familiar with these install contracts because I had been talking to a few different companies, and got multiple bids. So that’s probably the first thing. Even if you know you favor one company over another, it doesn’t hurt to get multiple bids and contracts. This helps you to get a feel for pricing, and also provides a tool for negotiation.

Also, here’s another great tip… just ask an AI if you have any questions. You can use the AI provided information to cross-check what installers are telling you. Though bear in mind that AI’s are not infallible, so crosscheck all of your info to make your best decision.
(future post – using AI to answer your solar questions!)

How to Ensure Your Solar Panel Installation Contract Is Comprehensive and Clear

1. Review All System Details

  • Confirm the contract specifies the number, type, and brand of solar panels, inverters, and ancillary equipment (e.g., wiring, disconnects, battery storage)
  • Request data sheets or product information for all major components to assess quality and compatibility with your needs
    • Usually, links to the manufacturer’s website are given.
List of materials. panels, micro inverters, and racking.
List of materials. REC panels, Enphase microinverters, mounted on IronRidge rails — an excellent system.
Most companies use commercial software to create these bids. The company I went with uses SolarGraf (check it out).

2. Financial Transparency

  • The contract should clearly outline all costs: equipment, labor, permitting, and inspection fees
  • Ensure it details payment schedules, financing terms, tax credits, rebates, and any incentives
  • If using a loan, review separate loan documents as these may not be included in the main contract!
Pricing and numbers of items.
Pricing. This bid included a new service panel (“breaker box”) install. Having their electrician install this allowed me to include the panel upgrade/replacement as part of my tax deduction for this project, saving me about 30% of the cost. The upgrade to the 3G Controller did not happen. It was left on there by accident by their salesperson after getting multiple different bids. The owner of the company offered to install one for free if I got more work done in the future, but in retrospect, I was glad not to get it because it’s a connect for a fossil fuel generator. I was thinking of getting a generator that runs off natural gas, but they cost as much as getting batteries added to this system, require maintenance, break down often, and use fossil fuel — so I just plan to get batteries installed soon.
More pricing. with totals.
More Pricing. The solar powered roof fan (attic fan) did not fit in the location I wanted it, so I let that one go.
Regarding the credit card processing fee, I wanted to charge this to get a bunch of money back from credit card points using a totally crazy strategy that saved me thousands of dollars!! I earned well in excess of the credit card fee, so it was definitely worth it.

3. Installation and Permitting Process

  • The contract must specify who is responsible for permits, inspections, and utility interconnection, with clear timelines for each step
  • Make sure it includes an estimated installation date and what happens if there are delays
Project timeline. with charge schedule.
Timeline. Timeline for install and payment schedule. The actual install was about a few weeks behind what’s shown. The City wanted a revision to the plan, and my HOA was slow to respond. All in all, it went faster than I was expecting.

4. Energy Production and Savings Estimates

  • Look for annual production estimates and savings projections, based on your actual energy usage and local conditions (the installer should ask for a copy of your electricity bill to help make these calculations)
  • Ensure the system size matches your current and future energy needs (I undersized my solar array. Looking back I’d probably should have gotten a few more panels)
Projected production and savings, by month, and by year (out to 2048)
Energy Savings. These are made by the software used (SolarGraf) and are totally notional. In practice, my power provider only pays back a small fraction of the cost per kW/hour that they charge you. When I get batteries, this equation should change as I can use the batteries when my panels aren’t producing instead of pulling off the grid.

A lot of the stuff below here was at the end of my contract in the fine print. Be sure to read the fine print! It’s important.

5. Warranties and Maintenance

  • Confirm all warranties are detailed: manufacturer (typically 25 years for panels), inverter, and installation/workmanship warranties (ideally 5+ years)
  • Understand what is covered, for how long, and the process for making a warranty claim

6. Legal and Regulatory Compliance

  • The contract should state the installer’s licensing and insurance status; request proof if not included
  • Check for compliance with local regulations and HOA requirements

7. Dispute Resolution and Termination

  • Review clauses on waivers, termination rights, cancellation policies, and dispute resolution (arbitration or litigation)
  • Ensure you understand your rights and obligations if issues arise.

8. End-of-System-Life Provisions

  • The contract should explain what happens at the end of the system’s life, including removal or decommissioning, and whether the system is transferable to a new homeowner
    • Not sure any company will include disposal as that seems a bit much, but…
    • They should definitely tell you if the warranty is transferable if you sell your house.

9. Clarity on Responsibilities

  • Make sure it specifies who is responsible for paperwork, incentive filings, and ongoing maintenance
    • If you live in a state with local incentives for going solar, this may apply. Otherwise, it’s up to you when you do your taxes.

10. Ask Questions and Seek Expert Review

  • Don’t hesitate to ask for clarification on any unclear terms or provisions
  • Consider having a solar expert or attorney review the contract before signing
  • Also, don’t forget to ask your AI. 🙂
    • I use Perplexity.ai — it’s an aggregator of different AI models. You can pay for it and get powerful pro options, or use it to ask a few questions for free (I think there is a limit to how many free prompts you can use, but it’s generous).

Contract versus what really happens

I went back and forth on the contract with the salesperson asking for different bids for slightly different setups, so the final contract had some stuff on it that was either not useful or didn’t get done. One thing on my contract that was not done, was electrical conduit to run the wires through the attic. I suspect that it is a rare job that ends up getting that done — it’s what I would call, contract padding. I do have some messy wires running through the attic, and they did offer to straighten it out. Right now it’s not a priority, but I may take them up on it if they come back for additional work. Anyhow, bottom line is that I am satisfied with my system and confident in the actual install. It has been producing solidly for about a year now.

Did you sign up for solar recently? What was your take on the process, and how did it go? Let us know — comment below!

Solar Roadmap

Unlock the full benefits of going solar with this action-packed Solar Roadmap, your guide to slashing electric bills, tapping into major tax incentives, and cutting your carbon footprint. From choosing the right installer to adding batteries for maximum savings and backup power, these articles make turning sunshine into serious savings simple.

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