Solar Loan vs Solar PPA: A California Homeowner's Guide

If you have started researching solar, you have probably noticed there are two very different ways California homeowners go solar: buy the system (cash or a solar loan) or buy the energy (a solar PPA, which we call a Solar-Based Utility). This guide explains the difference in plain English, with the local PG&E and NEM 3.0 context that actually affects your decision.

Key takeaways

What is a solar loan?

A solar loan lets you purchase the system installed on your home. The panels, inverter, and equipment become yours, and the loan is paid off over time.

With a solar loan, homeowners typically:

• Finance the system over roughly 10 to 25 years
• May claim the federal Residential Clean Energy Credit if eligible
• Take on ownership and maintenance responsibility
• Build equity in the equipment

Instead of paying PG&E for most of your electricity, you make a payment toward owning an energy-producing asset.

What is a solar PPA (Solar-Based Utility)?

A solar PPA is a Power Purchase Agreement. A provider installs and maintains the system, and you buy the electricity it produces. At Senga Energy we call this a Solar-Based Utility because it is easier to picture: you are replacing part of your utility service with power generated on your own roof.

With a Solar-Based Utility, homeowners often see:

• Little or no upfront investment
• Reduced maintenance responsibility
• Production guarantees in many agreements
• Payment for energy instead of equipment

Most homeowners do not own the power plant that makes their electricity today. A Solar-Based Utility works similarly, except the power is generated on your property.

Solar loan vs solar PPA: side-by-side comparison

The single biggest difference: with a loan you are buying equipment; with a Solar-Based Utility you are buying energy. That one distinction shapes almost everything else.

Pros and cons

Solar loan

• Pro: long-term savings and equity; you may claim the tax credit
• Pro: protection from utility purchases once paid off
• Con: credit qualification, a longer commitment, and maintenance after warranty

Solar PPA / Solar-Based Utility

• Pro: little or no upfront cost and simpler maintenance
• Pro: predictable energy payment, often with a production guarantee
• Con: you do not own the system or claim the tax credit, and the agreement is transferred at sale

What California homeowners should know (NEM 3.0, PG&E, and batteries)

California changed how solar exports are credited. Homes that interconnected on or after April 15, 2023 are on the Net Billing Tariff (NEM 3.0), where credits for power sent to the grid are generally lower than under NEM 2.0.

Because exports are worth less, storing your own power in a solar battery and using it at night can matter more than it used to, whichever way you finance. A battery can also keep essential circuits running during a PG&E outage.

With PG&E rate increases a recurring topic across Northern California, locking in a predictable solar payment is part of why homeowners look at both loans and Solar-Based Utilities in the first place. Actual savings depend on your usage, rate plan, and system design.

What we see in the field

Across PG&E territory in El Dorado Hills, Placerville, Cameron Park, Auburn, and the greater Gold Country, a few patterns come up again and again.

The most common misunderstanding is that solar is one product with one price. It is not. Two neighbors with the same roof can land on very different recommendations based on when they use power and how big their bill is.

Before we recommend a loan or a Solar-Based Utility, our team checks:

• Roof age, condition, orientation, and shading
• Your PG&E bill size and when you use the most power
• Whether a battery is worth it under NEM 3.0 for your usage
• How long you plan to stay in the home
• Your goals: ownership and equity, or low upfront cost and simplicity

Two homeowner examples

These are illustrative, not quotes, but they show how the same question can have different answers.

Higher bill, evening usage. A homeowner with a $300 PG&E bill who uses most of their power after sunset may benefit from ownership plus a battery, so they store daytime production and avoid expensive evening rates.

Lower bill, wants simplicity. A homeowner with a $125 bill who prefers no upfront cost and no maintenance may be a better fit for a Solar-Based Utility, trading some long-term upside for a predictable monthly payment.

When a solar loan makes sense

• You want to own the system and build equity
• You qualify for financing and can use the tax credit
• You expect to stay in the home long-term
• Maximizing long-term savings matters more than upfront simplicity

When a Solar-Based Utility makes sense

• You want little or no upfront investment
• Predictable monthly cost matters more than ownership
• You prefer the provider to handle maintenance
• You want an alternative to rising utility rates without buying equipment

Questions to ask before you decide

Whichever direction you lean, get clear answers in writing. California's Solar Consumer Protection Guide is a useful neutral reference.

• Is there an escalator, and how much does the payment rise each year?
• Who claims the federal tax credit, and am I eligible?
• How does a transfer or buyout work when I sell?
• Who is responsible for maintenance and repairs?
• What happens if I refinance the home?
• Is a battery recommended for my usage under NEM 3.0?

Glossary

• PPA: Power Purchase Agreement. You buy the power the system produces; the provider owns the equipment.
• Solar loan: Financing to purchase and own the system, repaid over time.
• NEM: Net Energy Metering, the older rules (NEM 2.0) for crediting exported solar power.
• Net Billing Tariff (NEM 3.0): California's current rules, where export credits are generally lower than under NEM 2.0.
• True-up: The annual reconciliation of your solar credits and charges on your PG&E account.
• ITC: The federal Residential Clean Energy Credit available to eligible system owners.
• Escalator: A clause that raises a PPA payment by a set percentage each year.
• Buyout: Paying to purchase the system or end a PPA, often relevant at sale.
• Transferability: Whether a PPA can be passed to a home buyer at closing.
• Battery backup: Storage that powers essential circuits during an outage and stores daytime energy for night use.

Frequently asked questions

Your next step

If you want to know whether a solar loan or a Solar-Based Utility fits your home, Senga Energy can review your PG&E bill, roof, usage, and battery eligibility before recommending a path. There is no obligation, and you can check your eligibility online or call us directly.

Rate plans, NEM and Net Billing rules, and the federal tax credit can change and depend on your situation. Verify current details with the linked sources, including the CPUC, the IRS, the DSIRE incentive database, and the U.S. Department of Energy, before making a decision.