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

Installers who connected the most home solar systems in Simi Valley 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 Simi Valley by the numbers

SCE approved 780 home solar systems in Simi Valley in 2025, from 124 installers; the top three were named on 45% of them. The busiest year since 2021 was 2022, with 1,557 (2025: -50%). Another 294 were approved from January through May 2026.

2025 mix: 52% leased or on a power purchase agreement, 48% owned by the household; 93% with a battery; median size 8.1 kW DC. Ventura County: 44% leased or PPA, 89% with a battery, median 6.8 kW.

Hiring a solar company in Simi Valley

Solar companies in Simi Valley must send roof-mounted residential jobs through SolarAPP+ before the City issues a permit, a rule in force since January 1, 2023; the permit is then issued automatically from the City's portal, and there is one inspection. SCE delivers the power and Clean Power Alliance supplies it by default, with its own April true-up. Compare at least three written bids built on your own bill.

Simi Valley's SolarAPP+ steps

The City's process has two halves. In SolarAPP+, the contractor registers, submits the design, pays a $25 administrative fee per project and downloads the approval document; the City notes that SolarAPP+ registration can take longer than usual because of statewide demand. In the City's self-service portal, the contractor selects the Building & Safety SolarAPP+ permit, attaches the signed Construction Permit Declaration and the approval document, pays the permit fees online, and the permit is issued automatically by email.

SolarAPP+ permits in Simi Valley include only one inspection, so the City asks that all work be complete, and match the approved scope on the approval document and permit, before the inspection is requested. Inspection requests made in the portal by 4 p.m. may be scheduled for the next business day, and the inspector will want a set of plans along with the SolarAPP+ approval. Revisions go to Building and Safety, and ground-mounted systems or additions to an existing array need a call there before applying.

What the permit numbers show

Simi Valley reported 1,357 residential solar permits to the California Energy Commission for 2023 and 601 for 2024. The storage share changed sharply: 446 of the 2023 permits included a battery, compared with 530 of the 2024 permits, about 88%. The share issued online rose from 70% to 79%.

That shift lines up with the billing rules. Clean Power Alliance moved new solar customers to its Solar Billing Plan for systems approved after August 31, 2023, crediting exports at hourly avoided-cost values, and SCE says its own export credits are worth less than the power you buy from the grid. A battery lets a home use its midday output in the evening instead of exporting it, so ask every bidder to show the bill with and without one.

What a Simi Valley quote needs to explain

A comparison to ask for

Simi Valley's SolarAPP+ permits come with one inspection, so the work has to be finished and match the approved scope before the inspector arrives. Ask each bidder whether its design fits SolarAPP+ (the City says up to 38 kW, with or without a panel upgrade), who books the inspection, and whether a battery is on the same permit. Then compare the price and the remaining CPA and SCE bill.

Verify the company behind the Simi Valley quote

Match the business name and license number on each Simi Valley 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 Simi Valley rates and bills page.

Simi Valley solar quote questions