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California solar decisions
Solar Companies in Chula Vista, CA: Who Installed the Most Systems in 2025
Utility records show 1,162 home solar systems connected in Chula Vista in 2025. Sunrun Inc. was the installer of record on 326 of them, followed by Lennar (115) and SunPower Corporation (88). 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
- 2024 solar permits
- 1,554
- 58% with storage, 41% issued online
- California Energy Commission (SB 379 reports)checked Sep 23, 2026
- Generation
- San Diego Community Power
- About 93% of the city's area; SDG&E delivers
- California Energy Commissionchecked Sep 23, 2026
- Solar billing
- Monthly, no annual true-up
- Community Power's Solar Billing Plan
- San Diego Community Powerchecked Sep 23, 2026
Installers who connected the most home solar systems in Chula Vista in 2025
| Installer (name as reported) | Systems in 2025 | Jan 2024 to May 2026 | CSLB license |
|---|---|---|---|
| Sunrun Inc. | 326 | 989 | 750184 check |
| Lennar | 115 | 405 | 1003498 check |
| SunPower Corporation | 88 | 242 | 890895 check |
| Bright Planet Solar | 78 | 210 | 1020761 check |
| Freedom Solar Co | 56 | 93 | 1124448 check |
| SolarCity | 51 | 94 | 888104 check |
| Semper Solaris Construction Inc | 47 | 112 | 978152 check |
| GAF Energy | 45 | 112 | 1062345 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 Chula Vista by the numbers
SDG&E approved 1,162 home solar systems in Chula Vista in 2025, from 111 installers; the top three were named on 46% of them. The busiest year since 2021 was 2023, with 3,472 (2025: -67%). Another 374 were approved from January through May 2026.
2025 mix: 53% leased or on a power purchase agreement, 48% owned by the household; 0% with a battery; median size 4.66 kW DC. San Diego County: 36% leased or PPA, 0% with a battery, median 5.36 kW.
| Year | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|
| Systems connected | 1,813 | 2,759 | 3,472 | 1,604 | 1,162 |
Hiring a solar company in Chula Vista
Solar companies in Chula Vista design around two providers: SDG&E delivers the power and San Diego Community Power supplies most homes' generation, billing solar customers monthly with hourly export credits. The City issued 1,554 residential solar permits in 2024, 41% online and more than half with batteries. A mobile or manufactured home needs a state HCD permit instead. Compare at least three written bids built on your own bill.
Permits: the City, or the state for manufactured homes
The City of Chula Vista reported 3,188 residential solar permits to the California Energy Commission for 2023 and 1,554 for 2024. The storage share climbed from 16% to 58% over those two years, and the share issued online from 16% to 41%. Ask each bidder whether your design will be permitted online or go through plan review.
If you live in a mobile or manufactured home in Chula Vista, state rules apply. The Department of Housing and Community Development requires an HCD permit for any solar system on a manufactured home and a permit before any alteration begins. Its advisory warns that manufactured home roofs are not accessible, so damage from poor installation is not visible, and HCD's guidelines say when engineered plans or electrical load calculations are needed. HCD's Southern Area Office is in Riverside.
What a Chula Vista quote needs to explain
| Check | Ask each bidder |
|---|---|
| Generation provider | Model San Diego Community Power's hourly export credits and monthly billing, not SDG&E's generation rates, if Community Power is on your bill. |
| Evening use | Show how much of the 4-to-9 p.m. on-peak use the system and any battery cover on EV-TOU-5. |
| Permit route | Say whether the City permit will be issued online or through plan review, and the expected wait. |
| Mobile home | On a mobile or manufactured home, show the HCD permit and the company's CSLB license before work starts. |
Related Chula Vista project questions
Use these guides to prepare the specific questions a written bid needs to answer.
A comparison to ask for
Most Chula Vista bids now include a battery: 898 of the City's 1,554 solar permits in 2024 did. Ask each bidder to show your bill with and without it, using SDG&E's 4 p.m. to 9 p.m. on-peak hours and Community Power's hourly export credits, and to say whether the permit will be issued online or through plan review.
Verify the company behind the Chula Vista quote
Match the business name and license number on each Chula Vista 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 Chula Vista rates and bills page.
Permit fees and the filing route are on the Chula Vista solar cost and permit page.
Chula Vista solar quote questions
Who supplies electricity for solar homes in Chula Vista?
SDG&E delivers the power and sends the bill. San Diego Community Power supplies the generation for most homes; on the Energy Commission's map it covers about 93% of the city's area. Community Power sets the generation import charges and export credits for its customers.
How does San Diego Community Power credit new solar systems?
Customers interconnected on or after April 15, 2023 are on its Solar Billing Plan, with export credits based on the CPUC's Avoided Cost Calculator, which vary by hour and month, for nine years from permission to operate. Solar Billing Plan customers are billed monthly and are not eligible for annual billing.
How many solar permits does Chula Vista issue?
The City reported 1,554 residential solar permits to the California Energy Commission for 2024, down from 3,188 in 2023. In 2024, 898 included battery storage and 634, about 41%, were issued online.
Can I put solar on a mobile home in Chula Vista?
Yes, with a state permit. The California Department of Housing and Community Development says an HCD permit is required for any solar system installed on a manufactured home, warns that damage from poor installation on those roofs is not visible, and tells owners to confirm the company's CSLB license and HCD permit before signing.
What are SDG&E's peak hours for a Chula Vista solar home?
On EV-TOU-5, the plan SDG&E's Solar Billing Plan uses, on-peak runs from 4 p.m. to 9 p.m. SDG&E suggests using a battery during those hours, when electricity is priced highest.
Before you sign anything in Chula Vista
Two of the contract terms that most often change what a quote really costs.
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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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