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Solar Companies in Aptos, CA: Who Installed the Most Systems in 2025
Utility records show 117 home solar systems connected in Aptos in 2025. Allterra Solar was the installer of record on 24 of them, followed by Sunrun (18) and Solar Technologies (10). 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
- Electric utility
- PG&E
- 33.7¢/kWh average residential rate, CPUC
- CPUC Public Advocates Officechecked Sep 22, 2026
Installers who connected the most home solar systems in Aptos in 2025
| Installer (name as reported) | Systems in 2025 | Jan 2024 to May 2026 | CSLB license |
|---|---|---|---|
| Allterra Solar | 24 | 57 | 847973 check |
| Sunrun | 18 | 38 | 750184 check |
| Solar Technologies | 10 | 18 | 932914 check |
| Tesla Energy Operations Inc | 9 | 20 | 888104 check |
| Arrow Energy Solar Systems | 6 | 13 | 1040832 check |
| Sandbar | 4 | 11 | 846294 check |
| Day One Solar Inc | 3 | 8 | 987896 check |
| Power Up Solutions LLC | 3 | 3 | 1113778 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 Aptos by the numbers
PG&E approved 117 home solar systems in Aptos in 2025, from 33 installers; the top three were named on 44% of them. The busiest year since 2021 was 2023, with 168 (2025: -30%). Another 47 were approved from January through May 2026.
2025 mix: 21% leased or on a power purchase agreement, 79% owned by the household; 39% with a battery; median size 5.77 kW DC. Santa Cruz County: 29% leased or PPA, 39% with a battery, median 5.46 kW.
| Year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Systems connected | 112 | 128 | 168 | 115 | 117 |
Who connects a Aptos solar system
PG&E connected every Aptos system in the 2025 records. A new Aptos system on PG&E goes on the CPUC Net Billing Tariff; the key facts above give PG&E's average rate.
Verify the company behind the Aptos quote
Match the business name and license number on each Aptos 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 Aptos rates and bills page.
Permit fees and the filing route are on the Aptos solar cost and permit page.
Before you sign anything in Aptos
Two of the contract terms that most often change what a quote really costs.
Frequently asked questions
Which solar companies install the most systems in Aptos?
In 2025 interconnection records, Allterra Solar was the installer on 24 home systems in Aptos, Sunrun on 18 and Solar Technologies on 10, out of 117. Since January 2024 the same companies were named on 57, 38, 18 systems. That is a count, not a ranking.
Do most Aptos homeowners buy or lease their solar?
Of 117 home systems connected in Aptos in 2025, 21% were leased or on a power purchase agreement and 39% had a battery; the median size was 5.77 kW DC.
How do I check a Aptos solar company's license?
Look the number up on the CSLB's Check a License page. For the companies named on the most Aptos systems in 2025, the applications list 847973 for Allterra Solar, 750184 for Sunrun and 932914 for Solar Technologies. The CSLB record shows the status, classification and any complaint disclosure.
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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
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