Solar Companies in Oakland, CA: Who Installed the Most Systems in 2025

Installers who connected the most home solar systems in Oakland in 2025

Counts from utility records, not a ranking or endorsement. Check each license's status and complaint history on the CSLB's Check a License page (checked Sept. 24, 2026).

Source: California Distributed Generation Statistics (CPUC), Interconnected Project Sites data set, data through May 31, 2026 (checked Sept. 24, 2026).

Home solar in Oakland by the numbers

PG&E approved 794 home solar systems in Oakland in 2025, from 139 installers; the top three were named on 29% of them. The busiest year since 2021 was 2023, with 2,007 (2025: -60%). Another 503 were approved from January through May 2026.

2025 mix: 33% leased or on a power purchase agreement, 67% owned by the household; 43% with a battery; median size 5.33 kW DC. Alameda County: 33% leased or PPA, 53% with a battery, median 5.79 kW.

Hiring a solar company in Oakland

An Oakland solar company can permit a standard rooftop job in two steps: an approval from SolarAPP+, then a permit through the City's Online Permit Center using that approval number. Most Oakland homes get generation from Ava Community Energy and delivery from PG&E, so a sound bid models both. Compare at least three written proposals on the permit route, the battery size and the two bills.

Start with your Oakland electricity bill

Check the generation provider and solar program on the PG&E bill. Ava provides generation for its customers, while PG&E provides transmission, distribution and billing. Ava's Solar Billing Plan separates generation and delivery credits, and the two annual true-ups can occur in different months.

Which Oakland jobs fit SolarAPP+, and which do not

Oakland limits its SolarAPP+ route to rooftop systems on permitted main dwellings, installed by California-licensed contractors, with no ballasted racking. The contractor gets a SolarAPP+ approval, applies through the Online Permit Center with that approval number, and then books the inspection through the City's mobile app. SolarAPP+ may charge its own processing or subscription fee. Ground-mounted and ballasted systems, and commercial jobs, skip SolarAPP+ and go straight to the Online Permit Center.

The City now lets a main service panel replacement, subpanels and a battery installed as part of the solar job ride on the same solar permit. Electrical work that is not dedicated to the solar system still needs its own electrical permit. Storage gets a size check: Oakland sends a project to Fire Prevention for approval when any single battery holds more than 20 kWh, when the combined storage exceeds 40 kWh in certain locations, or when more than 80 kWh is installed outdoors.

Ask each bidder which route your job takes, whether the panel work is on the solar permit or a separate one, and whether its battery design stays under the Fire Prevention thresholds. A proposal that stacks two large batteries in a garage may trigger a review that another bid avoids.

Reading an Ava and PG&E solar bill in Oakland

Oakland solar homes pay two companies on one statement. Ava buys the power and credits the generation portion of your exports; PG&E delivers it and credits the delivery portion, which Ava's own guide calls the Energy Delivered credits. The two sides settle separately: Ava's annual true-up is in April, while PG&E's depends on when your system was turned on.

For a new system on the Solar Billing Plan, Ava requires the E-ELEC rate and pays a peak-hours bonus of $0.025 per kWh for exports between 3 and 8 p.m. if you are not on CARE or FERA; CARE and FERA customers get $0.01 per kWh extra on all exports instead. An Oakland proposal that shows one blended credit rate for every exported kWh is skipping that detail, so ask for the hourly assumption behind its savings figure.

What an Oakland quote needs to explain

A comparison to ask for

An Oakland bid can look lower because roof work, a panel change or storage is missing. Ask each bidder to price those items separately and use the same shade-aware monthly production. Then compare the remaining Ava and PG&E bill under the account's confirmed solar program.

Verify the company behind the Oakland quote

Match the business name and license number on each Oakland proposal to the CSLB record, then use our contractor verification steps, the quote comparison guide and the PPA, loan, lease and cash comparison. What you pay the utility today is on the Oakland rates and bills page.

Permit fees and the filing route are on the Oakland solar cost and permit page.

Oakland solar quote questions