Lathrop · San Joaquin County
Solar + battery for Lathrop 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 Lathrop homeowners are adding batteries
Lathrop and River Islands are packed with brand-new homes with big afternoon AC loads. New homes often come with a small solar system and no battery, and adding a Powerwall lets you use that solar in the evening and keep the lights on in an outage.
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 Lathrop 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.”
“I found out my system was not producing and I had to find a new installation company… they got a guy out so quickly to get the diagnostics done! Robert, the technician, was on time and got me up and going again. Hands down best of the best.”
“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 Lathrop and nearby
- Lathrop
- River Islands
- Mossdale
- Manteca (PG&E areas)
- French Camp
- Weston Ranch
ZIP codes: 95330, 95336, 95206
Is my home eligible?
Lathrop and River Islands are PG&E territory. Some nearby parts of Manteca and Ripon are served by the Modesto Irrigation District (MID), so 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 Lathrop 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.
Lathrop solar questions
Does R.O.I. Solar install in Lathrop?
Yes. Our own licensed crews install throughout Lathrop and San Joaquin County, about 22 miles from our Lodi shop. No subcontractors. CSLB #1082435 (C10 / C46).
How much does solar + battery cost in Lathrop?
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 Lathrop home eligible?
Lathrop and River Islands are PG&E territory. Some nearby parts of Manteca and Ripon are served by the Modesto Irrigation District (MID), so 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 · Brentwood · Sacramento · Elk Grove · Rancho Cordova