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California solar decisions
Solar Companies in Santa Cruz, CA: Who Installed the Most Systems in 2025
Utility records show 358 home solar systems connected in Santa Cruz in 2025. Allterra Solar was the installer of record on 78 of them, followed by Sandbar (49) and Sunrun (38). 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 Santa Cruz in 2025
| Installer (name as reported) | Systems in 2025 | Jan 2024 to May 2026 | CSLB license |
|---|---|---|---|
| Allterra Solar | 78 | 226 | 847973 check |
| Sandbar | 49 | 95 | 846294 check |
| Sunrun | 38 | 95 | 750184 check |
| Solar Technologies | 18 | 51 | 932914 check |
| Nexus Energy Systems Inc | 16 | 20 | 359060 check |
| Day One Solar Inc | 14 | 36 | 987896 check |
| Bright Ops | 14 | 23 | 1020761 check |
| Tesla Energy Operations Inc | 7 | 28 | 888104 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 Santa Cruz by the numbers
PG&E approved 358 home solar systems in Santa Cruz in 2025, from 61 installers; the top three were named on 46% of them. The busiest year since 2021 was 2023, with 579 (2025: -38%). Another 150 were approved from January through May 2026.
2025 mix: 18% leased or on a power purchase agreement, 82% owned by the household; 27% with a battery; median size 5.4 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 | 345 | 493 | 579 | 372 | 358 |
What a Santa Cruz quote needs to explain
| Check | Ask each bidder |
|---|---|
| Existing solar enrollment | Record current NEM or Solar Billing Plan status and any proposed change before signing. |
| Roof-level production | Ask for a shade assessment and monthly output for each roof plane; use your site’s inputs. |
| Storage and permit | Name the backed-up circuits, equipment location and city or county application path. |
Related Santa Cruz project questions
Use these guides to prepare the specific questions a written bid needs to answer.
A comparison to ask for
An existing solar owner may be offered a battery rebate alongside a change in billing. Compare keeping the existing enrollment with the proposed transition, using the same usage and battery settings. Put the continuing bill difference beside the rebate. The upfront amount is only part of the decision.
Verify the company behind the Santa Cruz quote
Match the business name and license number on each Santa Cruz 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 Santa Cruz rates and bills page.
Permit fees and the filing route are on the Santa Cruz solar cost and permit page.
Santa Cruz solar quote questions
Can a battery offer change my Santa Cruz solar billing?
Some offers can. 3CE’s battery program conditions require existing NEM participants to move to the Solar Billing Plan. Compare the continuing billing effect before accepting the offer.
Does a Santa Cruz company’s address prove it serves my home?
No. Ask for written service coverage and identify whether your property is inside the city or under another permit authority.
Before you sign anything in Santa Cruz
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
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