In California, choosing a solar company means choosing a battery partner, whether or not you knew you were shopping for one. Under NEM 3.0 billing, the big three utilities charge around 30¢ for the power you buy and credit 4 to 8¢ for the power you export, and only storage closes that gap.
Star ratings collected in the NEM 2.0 era say little about battery-first competence. That misses what actually goes wrong in California now: panel-only quotes that pencil like it is 2022, batteries sized by sales script instead of load, and out-of-state operators who have never filed with your utility or pulled a Title 24 permit.
Here is how we evaluate California installers, the three companies in our network today, and the questions that break a bad quote in one meeting. For the meter math itself, start with our California solar guide.
A Battery-Fluent California Bench
Alphabetical, unpaid, unranked until our methodology is live. Each profile relies on the company’s own published materials.
Baker Electric Home Energy
A Southern California home energy company with roots back to 1938, Baker pairs solar and storage with in-house HVAC across San Diego and North County. It is a GAF Master Elite roofing contractor and four-time BBB Torch Award winner, and nearly nine decades of regional history is the longest continuity claim on any list we publish.
Semper Solaris
Veteran-owned and among California’s highest-volume residential installers, Semper Solaris runs solar, battery storage and roofing under one company, with Owens Corning Platinum roofing credentials and an A rating with the BBB. The roofing-plus-solar model matters in a state where re-roofing under panels is a five-figure mistake to sequence wrong.
Solar Optimum
Operating for 18 years across California, Arizona and Florida, Solar Optimum carries 25-year warranties across panels, inverters, racking, workmanship and performance, a Tesla Powerwall Premier designation and a top-national-installer ranking in the 2024 Solar Power World list. The across-the-board warranty structure is the standout: one 25-year answer instead of five different papers.
What Battery-Era Vetting Looks Like in California
California hands buyers real vetting tools. We look at four things, all checkable:
- CSLB standing. An active C-46 or C-10 license and complaint history at the Contractors State License Board, searchable by anyone in two minutes.
- Battery fluency. Under the current export rates, storage design is the job. Does the company model your usage shifting, or does it quote one battery size for every house?
- Published warranty terms. Workmanship and performance coverage in writing, across the whole system, not just the panels.
- Utility track record. Real interconnections with PG&E, SCE or SDG&E, and fluency with the exceptions, because LADWP and SMUD customers live under friendlier rules worth knowing about.
The Quote-Breakers to Ask in California
- “Show me the math without the battery.” An honest NEM 3.0 quote shows panel-only and solar-plus-storage side by side. If panel-only looks great at 4-to-8¢ exports, the model is broken.
- “How did you size my battery?” The right answer references your evening usage and rate plan, not a standard package. One-size batteries are the new one-size arrays.
- “Which utility and rate plan am I modeled on?” PG&E, SCE and SDG&E run different rates, and LADWP or SMUD customers get different answers entirely.
- “What is my CSLB license number?” Then check it at cslb.ca.gov before the second meeting. California publishes what other states hide.
- “Does your quote still show a federal tax credit?” Section 25D expired December 31, 2025. Any homeowner-owned quote showing a 30% federal reduction is wrong, and so is every payback under it.
Californians Better Served by Waiting
California solar still works, but not for everyone: households with little evening usage and no appetite for storage, renters and short-horizon owners, and anyone whose quote only pencils with dead incentives should wait. Our California guide names who should skip solar right now, and why the LADWP and SMUD exceptions change the answer for two big groups of Californians.
California Installer Questions, Answered
How do I verify a California solar company’s license?
Search the Contractors State License Board at cslb.ca.gov for an active C-46 (solar) or C-10 (electrical) license and the complaint history.
Match the exact business name to your contract, and treat a lapsed or borrowed license as a walk-away.
Do I really need a battery with solar in California?
Under NEM 3.0 billing at the big three utilities, usually yes: , so storing your surplus for evening use is where the savings live.
LADWP and SMUD customers face different math and should ask for it explicitly.
What does a fair California solar quote look like in 2026?
Cash pricing typically runs $2.75 to $3.25 per watt before storage. See our breakdown at cost-of-solar-panels/california.
A complete quote models your rate plan, shows panel-only versus solar-plus-battery, and carries no dead federal credit.
Is solar still worth it in California under NEM 3.0?
For homes that add right-sized storage, yes: solar-plus-battery paybacks run roughly 7 to 10 years against some of the nation’s highest rates.
Panel-only economics no longer close at the big three utilities, and an honest installer says so unprompted.
Thirty In, Six Out: The Takeaway
Three real companies serve California well: an 88-year San Diego institution, a veteran-owned volume leader, and a warranty-first statewide operator. The one that deserves your roof is the one that models your battery honestly and hands over its CSLB number without being asked twice.
Before you talk to any of them, know your numbers: check California’s incentives, see what systems cost here, and get an independent read on your meter math through our California solar report. Thirty cents in, six cents out is the whole game; play it deliberately.
