Solar PPAs in California: what you're really agreeing to

In a solar PPA (power purchase agreement), a company puts panels on your roof, keeps ownership, and bills you a set price for each kWh they make. In California that price usually starts below the utility's, then rises by a fixed percentage every year for 20 to 25 years. That rising percentage, the escalator, is where most PPAs are won or lost. The CPUC says escalators “are typically in the range of a 1 percent to 3 percent increase” a year and tells buyers to be cautious of anything higher (CPUC Solar Consumer Protection Guide).

If you're still deciding between owning and not owning, start with our lease vs buy guide. This page assumes you're looking at a PPA, or a lease that works like one, and want to know what the contract actually does to you over two decades.

How the money moves in a California PPA

Every month you get two bills instead of one:

• The PPA bill. The kWh your panels produced that month, times your contract price for that year.
• The utility bill. Smaller than before, but not gone. You still buy grid power at night and on cloudy days, and SCE and SDG&E bills now carry a fixed monthly charge solar can't touch.

The CPUC is blunt about this: going solar “reduces, but does not eliminate” the utility bill, and a lease or PPA customer “will also receive a monthly bill” from the provider (CPUC guide, October 2025). Anyone who tells you otherwise is making one of the false claims the CPUC prints in that guide.

A lease works the same way except the monthly amount is fixed rather than tied to production. Palmetto's LightReach, one of the larger providers, sells both and says which one you get depends on state rules (EnergySage review of LightReach). Most of what follows applies to both.

What a California PPA price looks like in 2026

Solar.com puts typical California PPA prices at about 17¢ to 28¢ per kWh in 2026, against utility rates it lists at 24¢ to 40¢ (Solar.com, January 2026). For context, SCE's average residential rate was 34.4¢ in June 2026 (SCE). A lower starting price usually comes paired with a steeper escalator, so the two numbers only mean something together.

Escalators come in set steps. Palmetto's FAQ describes a “pre-set annual rate escalator of 0-3.5%” (Palmetto). EnergySage puts the usual range at 1% to 3% a year (EnergySage), and Consumers' Checkbook advises that if a company proposes yearly increases above 3%, you negotiate or shop around (Checkbook).

Same panels, same roof, same starting price. At 0% you pay 22¢ in year 20. At 2.9%, a figure that turns up often in examples, you pay about 37.9¢, and you pass today's SCE average in year 17. At 3.5% you reach it around year 14. Whether that turns out fine depends on where utility rates go, and nobody can promise that.

The recent record cuts both ways. Using CPUC Public Advocates Office data, NRG Clean Power counts SCE's average rate up 56% over five years but only about 4% over the last three (NRG Clean Power, September 2026). A 2.9% escalator is a bet that the next 20 years look more like the first stretch than the second. A 0% escalator removes the bet, usually in exchange for a higher starting price.

That gap is why the takeaway at the top of this page tells you to ask for the year-20 price. A 0% PPA at a slightly higher starting price can easily cost less over the term. Ask for both versions and compare the totals. The CPUC guide you sign says the provider must explain “how any interest or escalation rates will affect my payments in the future” (CPUC guide), so asking is well within your rights.

Why providers can still price PPAs low in 2026

The federal 25D credit for homeowners who buy their own system ended after 2025. The company that owns a PPA system can still use the 48E business credit. Under the 2025 budget law, solar projects qualify if they're placed in service by the end of 2027, or if construction began by July 4, 2026 and they're in service within four years, and they also have to meet new sourcing limits on equipment tied to certain foreign countries (pv magazine USA, SEIA).

You never claim that credit yourself. It lowers the provider's cost, and competition is what pushes some of that into your price. Ask the provider directly whether it's claiming 48E on your system and how that shows up in your starting rate. The full history is in our 2026 tax credit guide.

How a PPA interacts with NEM 3.0

New SCE and SDG&E solar customers are on the Net Billing Tariff, the plan most people call NEM 3.0 (SCE Solar Billing Plan). With a PPA you're still the utility customer, so credits for power you export land on your utility bill, as they would if you owned the panels.

Here's the part salespeople skip. The PPA bills you for every kWh the panels make, including the ones that flow out to the grid. Exported power earns about 4.6¢ per kWh on SCE and about 3.7¢ on SDG&E on average (installer estimates, NRG Clean Power). At a 22¢ PPA price, every exported kWh costs you around 17¢ to 18¢ more than it earns.

So a PPA system should be sized to what your home uses as the sun shines, or paired with a battery that soaks up the midday surplus for the evening. An oversized PPA system is a money-loser by design. Our NEM 3.0 guide explains the export rules, and the solar calculator gives a rough sense of how many panels your bill supports.

The contract terms worth reading twice

A PPA runs 20 to 25 years, longer than most car loans and many mortgages. These are the sections that decide how it goes.

The production guarantee

You pay per kWh, so low output lowers your PPA bill, but it also leaves you buying more grid power at a higher price. A guarantee protects you from a system that quietly underperforms. Palmetto, for example, describes a “90% performance and production guarantee, reviewed every three years,” with a credit if the system falls short (Palmetto). Checkbook suggests finding the minimum output in the contract and what refund applies below it (Checkbook).

The UCC-1 fixture filing

Providers commonly record a UCC-1 financing statement, often called a fixture filing, with the county. It says the equipment on your roof belongs to them. It covers the panels, not your house (Solar.com), but it shows up when a lender or title company searches your property. Checkbook calls a fixture filing “a type of lien” and suggests asking whether it can be left out, or at least making sure it's lifted when the agreement ends (Checkbook). If you might refinance during the term, ask how the provider handles a temporary release and how long it takes.

Selling the house

You have two paths. The buyer takes over the PPA, which needs the provider's approval. Or you pay off the contract. The CPUC warns that if you sell before the contract ends you may “have to pay the solar provider the remainder of the value,” and that a buyout “can cost thousands of dollars” (CPUC). A PPA priced well below current utility rates is an easy handover. One with a steep escalator that's already passed the utility rate is a hard one. If you think you may move within ten years, weigh this before anything else.

The end of the term

When the contract ends, EnergySage says you can typically buy the system, renew (often at a lower rate) or have the company take it away (EnergySage). Get the end-of-term choices in the contract, not in a sales conversation.

Your rights before and after you sign

• The Solar Energy System Disclosure Document. California requires a CSLB-designed disclosure on the cover of every residential solar contract, showing the total cost, a one-year bill savings estimate and your right to cancel. Since November 1, 2025 it comes with a longer Supporting Information form covering payments and terms (CPUC). For a PPA, the CSLB describes it as a company that “sells you the power it generates at an agreed upon rate” (CSLB Solar Smart).
• The CPUC guide. SCE and SDG&E customers must sign the CPUC's Solar Consumer Protection Guide before a system can connect. It confirms savings estimates use, at most, the CPUC's cap on assumed rate increases, which the CPUC sets at 10% a year (CPUC). If a projection looks rosy, ask what rate increase it assumed.
• Time to cancel. At least three business days after you get a signed, dated copy of the contract, or five days if you're 65 or older (CPUC guide). The longer senior window has been law since 2021 (Consumer Finance Monitor). Different rules may apply to contracts signed at a company's office.
• A real license. Check the installer's CSLB license, and the salesperson's registration if they came to your door, at the CSLB license lookup.

The CPUC also prints four false claims in its guide and says not to do business with anyone who makes one. They are on our page of claims to walk away from.

Questions to ask before you sign a PPA

• What is my price per kWh in year 1, year 10 and year 20? Can I see a 0% escalator version?
• What is the total I'm projected to pay over the full term, and what production does that assume?
• How was the system sized, and how many kWh a year do you expect me to export?
• What does the production guarantee pay if the system falls short, and how often is it checked?
• What does a buyout cost in year 5, year 10 and year 15?
• Will you file a UCC-1, and how do I get it released for a refinance?
• Are you claiming 48E on this system, and is that reflected in my rate?