Independent information and referral site. Not a utility, contractor or government agency. Figures link to their sources. How we make money
California solar decisions
Solar Companies in Fremont, CA: Who Installed the Most Systems in 2025
Utility records show 791 home solar systems connected in Fremont in 2025. Tesla Energy Operations Inc was the installer of record on 177 of them, followed by Sunrun (113) and Citadel Roofing and Solar (54). The table lists each company's CSLB license number. It is a count from public records, not a ranking or endorsement: check each license and get at least three quotes.
California Rate Relief is a private solar referral service.
Key facts
Installers who connected the most home solar systems in Fremont in 2025
| Installer (name as reported) | Systems in 2025 | Jan 2024 to May 2026 | CSLB license |
|---|---|---|---|
| Tesla Energy Operations Inc | 177 | 386 | 888104 check |
| Sunrun | 113 | 264 | 750184 check |
| Citadel Roofing and Solar | 54 | 95 | 647149 check |
| Nabu Energy LLC | 36 | 51 | 1052356 check |
| Leonard Roofing Inc | 35 | 172 | 840399 check |
| Your Energy Solutions | 21 | 44 | 928652 check |
| Freedom Forever | 19 | 35 | 1029644 check |
| Bright Ops | 18 | 37 | 1020761 check |
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 Fremont by the numbers
PG&E approved 791 home solar systems in Fremont in 2025, from 114 installers; the top three were named on 43% of them. The busiest year since 2021 was 2023, with 2,078 (2025: -62%). Another 299 were approved from January through May 2026.
2025 mix: 31% leased or on a power purchase agreement, 69% owned by the household; 60% with a battery; median size 6.1 kW DC. Alameda County: 33% leased or PPA, 53% with a battery, median 5.79 kW.
| Year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Systems connected | 1,127 | 1,651 | 2,078 | 909 | 791 |
Start with your Fremont electricity bill
Check the generation provider and enrolled program on the PG&E bill before comparing proposals. Ava Community Energy (formerly East Bay Community Energy) lists Fremont among the 16 cities and unincorporated areas it serves; Ava supplies generation while PG&E delivers the electricity, maintains the wires and sends the bill. Have each bidder use both portions of the actual account.
A comparison to ask for
Put the same roof layout, shade model and monthly production in every Fremont bid. Then separate solar, storage, roof and electrical work, and compare the remaining bill under the same Ava generation and PG&E delivery enrollment shown on the account.
Verify the company behind the Fremont quote
Match the business name and license number on each Fremont 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 Fremont solar cost and permit page.
Before you sign anything in Fremont
Two of the contract terms that most often change what a quote really costs.
Ask for a competing quote
Start with the utility on your bill and what you pay in a typical month. Contact details come after that. Submitting does not guarantee that a provider will quote your project.
California Rate Relief is a referral service. We are not a licensed contractor. California Rate Relief is compensated by a solar provider when a homeowner we refer signs an agreement. How we make money
Before you send anything
- What this is
- California Rate Relief is a private referral service. It is not a contractor, does not install or finance anything, and is not a utility, a government agency or an assistance program.
- What happens after the form
- Your project details are recorded for referral to a solar provider. The provider decides whether it can help and what it can offer; availability, design and price are determined after its own review.
- How you are contacted
- Read the consent wording before submitting. Your inquiry includes contact details for follow-up about the project; a provider decides whether it can serve it.
- Using the site without submitting
- The calculators, bill comparisons and checklists on this site work without contact details, and nothing on this page requires a submission.