Brentwood · Contra Costa County
Solar + battery for Brentwood homes. $0 down.
Solar panels plus a Tesla Powerwall, installed by our own local crews. Payments start at $145/mo for qualifying PG&E customers, so you get predictable bills and backup power when the grid goes down.
Free home check · No obligation · Takes about 2 minutes
Why Brentwood homeowners are adding batteries
Brentwood's newer, bigger homes and 100-degree summer afternoons add up to some of the highest cooling bills in East County. Solar covers the day, and a Powerwall carries it through the evening and through outages.
Use your sun after dark
Under NEM 3.0, power you send back to PG&E earns much less than power you buy. A battery stores your solar for the evening, when your home uses the most.
Lights on in an outage
Standard solar shuts off when the grid goes down. A Powerwall keeps your fridge, Wi-Fi, lights and essentials running.
A bill you can plan around
PG&E bills swing month to month. A fixed PPA payment starting at $145/mo replaces the guesswork, with $0 down.
How it works
- Free home checkShare your address and PG&E bill. We confirm you qualify and size the system to your actual usage.
- Design & permitsWe design your solar + Powerwall system and handle the Brentwood permits and PG&E paperwork.
- Our crews installOur own licensed crews do the install. No subcontractors, and a local team to call when you need us.
What homeowners say
5.0 stars on Google › Real reviews from real customers.
“Marvin came out to my home personally, took the time to answer all my questions and address every concern, and made sure I got the right battery for my needs — not just a sales pitch. The whole process was smooth and easy, and I love the new battery.”
“Rich Piombo has been fantastic. His work ethic is outstanding. He has really been present and available. He presents the entire process of going solar clearly and convincingly.”
“We had struggled with my first solar company, SunPower… Rich Piombo at ROI Solar was able to find a solution for our situation with a few days researching and sizing our residential home's solar and battery needs. The actual installation took less than 5 weeks. We highly recommend using this Lodi CA company.”
Serving Brentwood and nearby
- Brentwood
- Oakley
- Discovery Bay
- Byron
- Knightsen
- Antioch
ZIP codes: 94513, 94561, 94505, 94514
Is my home eligible?
Brentwood, Oakley and Discovery Bay are PG&E territory. If your bill lists a community power supplier, PG&E still delivers your power, and that's fine. We confirm on your bill before anything else.
Not sure? Use Check my address in the bar at the top of the page, or just send us your bill.
See your Brentwood savings
Fill out the short form and a local R.O.I. Solar specialist will reach out within 1 business day. Prefer to talk now? Call (209) 600-4433.
Solar PPA. 25-yr term. For qualifying homeowners. Savings vary. Pricing depends on your home, roof and usage. Offer for PG&E customers only.
Brentwood solar questions
Does R.O.I. Solar install in Brentwood?
Yes. Our own licensed crews install throughout Brentwood and Contra Costa County, about 36 miles from our Lodi shop. No subcontractors. CSLB #1082435 (C10 / C46).
How much does solar + battery cost in Brentwood?
With our solar + Tesla Powerwall PPA there's $0 down, and payments start at $145/mo for qualifying homeowners. Your exact payment depends on your home, roof and usage, so we price it from your actual PG&E bill. Savings vary.
Is my Brentwood home eligible?
Brentwood, Oakley and Discovery Bay are PG&E territory. If your bill lists a community power supplier, PG&E still delivers your power, and that's fine. We confirm on your bill before anything else.
Why add a battery under NEM 3.0?
Under PG&E's current solar billing (NEM 3.0), power you send back to the grid earns much less than the power you buy. Storing your solar in a battery and using it in the evening is how you get the most out of your panels.
What happens when the power goes out?
A regular solar system shuts off during an outage for safety. With a Powerwall, your essentials keep running on stored and new solar power until the grid comes back.
Also serving: Stockton · Tracy · Manteca · Antioch · Vacaville · Fairfield · Lathrop · Sacramento · Elk Grove · Rancho Cordova