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

Installers who connected the most home solar systems in Mountain View 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 Mountain View by the numbers

PG&E approved 215 home solar systems in Mountain View in 2025, from 66 installers; the top three were named on 36% of them. The busiest year since 2021 was 2023, with 372 (2025: -42%). Another 100 were approved from January through May 2026.

2025 mix: 22% leased or on a power purchase agreement, 78% owned by the household; 40% with a battery; median size 6.06 kW DC. Santa Clara County: 30% leased or PPA, 54% with a battery, median 6.48 kW.

Hiring a solar company in Mountain View

Solar companies in Mountain View can permit most single-family systems through SolarAPP+, which the City uses for roof-mounted solar with or without a battery or panel upgrade and which issues the permit automatically; the inspection can follow one business day later. Silicon Valley Clean Energy supplies generation and PG&E delivers it. Compare at least three written bids built on your own SVCE and PG&E bill.

Start with your Mountain View electricity bill

Most Mountain View homes get generation from Silicon Valley Clean Energy and delivery from PG&E, which sends the bill; the Energy Commission's map places almost all of the city in both areas. SVCE settles its generation charges on each monthly bill rather than in PG&E's annual true-up. Ask each bidder to model your actual SVCE and PG&E enrollment, not a PG&E-only account.

Mountain View's two solar permit paths

The City splits solar permits by building type. SolarAPP+ is for roof-mounted or building-integrated panels on single-family homes, and it covers storage and electrical service panel upgrades in the same application. It verifies code compliance instantly without a traditional plan set and issues the permit automatically; the City then allows the inspection at least one business day after approval.

Everything else, including multifamily, commercial and industrial installations and any single-family job SolarAPP+ does not cover, goes through ePermitsMV. There the applicant uploads building plans and supporting documents, and the City collects the fee before issuing the permit. If a bid for your house names ePermitsMV, ask what about the design keeps it off SolarAPP+.

How SVCE treats a Mountain View solar account

Silicon Valley Clean Energy bills its generation monthly and rolls credits forward month to month, so SVCE customers do not face a year of generation charges at once. For systems on net energy metering, meaning applications filed by April 14, 2023, SVCE pays annual surplus each April at PG&E's Net Surplus Compensation rate, with income-qualified customers paid 2.5 times that rate. Customers on SVCE's GreenPrime option pay $0.0074 more per kWh they draw and get $0.0074 more per kWh of monthly surplus.

Newer systems follow the Solar Billing Plan, which SVCE applies as designed by PG&E; since April 15, 2024, exports under it have been valued using the CPUC's Avoided Cost Calculator. SVCE also says PG&E does not generally interconnect systems larger than 110% of on-site demand, and offers its customers $1,000 off an electrical panel upgrade needed for solar through its Solar + Battery Assistant.

What a Mountain View quote needs to explain

A comparison to ask for

If one Mountain View bid includes a battery and a panel upgrade and another does not, both can still use SolarAPP+, since the City's route covers single-family systems with or without storage or a service panel upgrade. Ask each bidder to confirm the route in writing, then compare the equipment and the SVCE and PG&E bill it leaves you with.

Verify the company behind the Mountain View quote

Match the business name and license number on each Mountain View proposal to the CSLB record, then use our contractor verification steps, the quote comparison guide and the PPA, loan, lease and cash comparison.

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

Mountain View solar quote questions