Solar + Battery · Lafayette · PG&E
Solar + Battery. Planned Together For Your Lafayette Home.
Panels are only as good as the roof under them. We inspect the roof, design the system around how you actually use power, and give you a written number before you commit to anything.
- Roof inspected before panels go on
- Your usage modeled, with and without a battery
- A written number. No pressure.
Generate during the day, keep more for the evening, and plan backup around the circuits you actually need.
4.9 ★★★★★500+ Google reviews
Certified installer
Certified installer
Certified installerReal people answer. No door-knockers, no tablet signing.
Call (707) 419-3155- 3rd Generation Owned
- BBB A+ Rated
- Locally Owned
- GAF Golden Pledge Warranty
- GAF Master Elite
After sunset. During an outage.
Why Most NorCal Solar Plans Now Include A Battery
PG&E's peak runs 4–9 pm and exports under NEM 3.0 / the Solar Billing Plan earn roughly 5–9¢/kWh, so stored daytime power is worth more used at home than sold back. A battery also keeps the essentials on during an outage.
What do you need to keep running?
Typical runtime on a full charge
24–48 hours
One battery
Solar recharges it every day.
Honest savings
What Solar Does To Your Electric Bill
Without solar, your whole bill goes to the utility and keeps climbing about 6% a year. With solar and a battery, the bill drops to a small fixed charge, you make a fixed payment toward a system you own, and after 20 years the payment ends.
$350 / month
- Bill today
- $350
- Bill with solar + battery
- about $44
- Solar payment, 20 years, $0 down
- $200
Monthly savings in year 5
$186 /mo
about $106 a month in year 1, growing as rates rise
25-year savings
$153,000
Payment ends
Year 20
Total saved, year by year
While paying off the systemPaid off
Spartan Smart Own
Own It. Get The Discount Up Front. Buy It Out For $0.
Smart Own is a prepaid power agreement funded by an ordinary solar loan. Three steps, then it's yours.
- 1
Your loan funds a prepaid agreement
One fixed monthly payment, the same kind of solar loan you'd get anyway.
- 2
Up to 30–35% comes off the system price on day one
Applied to the price itself, so your payment is based on the discounted number from month one.
- 3
At the end of year 5, you buy it out for $0
The system is yours. Keep provider-level maintenance after that if you want it, as an optional plan.
The old homeowner credit (25D)
You paid full price, then got up to 30% back at tax time, and only if you owed enough tax. It ended for systems completed after Dec 31, 2025.
Smart Own uses the 48E credit, which still applies
Similar savings to the old 25D, taken off the price up front. It's more paperwork for us, not you, and it works even if you don't owe any taxes.
5–10%
In a study of about 5,000 California home sales, homes with owner-purchased solar sold for 5–10% more than comparable homes without it.
Ways to pay
Three Ways To Pay
01
Cash or loan
You own it. Lowest lifetime cost, 0% options available, and it adds resale value.
02
Lease or PPA
Little or nothing down. A provider owns and maintains it. Watch the yearly escalator, transfer rules and buyout if you sell; it adds little resale value.
03 · OWNERSHIP PATH
Spartan Smart Own
48E savings taken off the price up front, a $0 buyout at year 5, optional maintenance after.
Roof + solar
Built On A Roof That Will Outlast The Panels
We inspect the roof before designing solar. If it needs work, we plan the roof and panels together: one crew, one permit set, one number.
Already have panels? Remove. Re-roof. Reinstall.
Spartan removes and reinstalls existing solar during a re-roof, and reviews equipment condition, ownership and warranty terms first.
Got another written quote? We'll compare it side by side for a comparable system. We rarely get beat.
Get My Honest NumberPrograms, not promises
What's Actually Available In 2026
- Available
Federal 48E credit, through Smart Own, lease or PPA
Similar savings to the old homeowner credit, applied up front. We do the paperwork, and you don't need a tax bill to benefit.
- Ended
Federal 25D homeowner credit
Ended for systems completed after Dec 31, 2025.
- Limited
SGIP
Budgets are limited. We'll check whether you qualify.
Equipment
The Right System For Your Home, Not A One-Brand Pitch
Powerwall 3 · Certified installer
Certified installer
Certified installer
Recent Spartan installs
Elevated solar array
New racking going on
Powerwall install in progress
Why Spartan
Three Generations. Two Local Offices. Real People.
The solar companies that vanished in 2024–26 left hundreds of thousands of California systems without anyone to call. We've been roofing here for three generations, and we'll be here when your inverter needs a look.
A team you can reach
Real people answer the phone. Your Lafayette project is run by the Fairfield team.
An office you can visit
7311 Galilee Rd, Suite 105, Roseville, and 2850 Cordelia Rd STE 100, Fairfield. Please do. We love visitors.
Real people answer
Three generations, one family. Same crews and the same number from your first call to your last service visit.
Spartan Shield
Our workmanship promise, in writing
CSLB #1055323
General contractor's license, not just roofing
Homeowners, in their own words
4.9★ Across 500+ Reviews
- Google
“Spartan Home Services replaced my roof and gutters, added solar panels, and added a home battery system to our house. They did a great job. It's a lot of work, and they communicated well throughout the whole project.”
Wesley A
- Google
“John was knowledgeable, no hard pressure and discussed my options well! He made it easy to discuss my roofing needs and solar options! Thank you John!”
Todd J
- Google
“The Spartan team of installers, Javier, Cornelio, and Anthony, was terrific. The roof installation and skylight replacement were done very cleanly and efficiently.”
Antonio N
- Google
“They were first class. From start to finish. The crew who come for the work were all very nice and professional. Addressed concerns on the fly. They made this process as painless as it could be for roof repair and replacement.”
Jeff G
- Google
“Spartan Home Services is our go to company for any Roofing projects. And we would highly recommend them to our family and friends.”
Leonard W
- Google
“As a licensed CA contractor myself since 1984, Spartan Home Services provided as outstanding service and performance that I've ever experienced”
John L
How it works
A Clear Plan Before You Sign
A fully written, detailed estimate from a trained roof specialist, not a high-pressure salesperson who doesn't know roofs.
Our specialists train on roofing first, and on windows and solar, not a 20-product crash course.
- 1
Start with your home
Share your usage, utility and priorities. We inspect the roof and any existing equipment.
Week 1
- 2
Compare the numbers
Your 12 months of usage modeled with and without storage, equipment choices and a written estimate.
Week 1–2
- 3
Read before you sign
You get the CSLB Solar Energy System Disclosure and the CPUC Solar Consumer Protection Guide. Financing, service and warranties in writing.
Week 2
- 4
Install and connect
Permits and utility approval handled. Install, inspection, permission to operate, app walkthrough, battery settings tuned to your rate plan.
Typical: 6–10 weeks to permission to operate
FAQ
Lafayette Solar & Battery Questions
Usually yes, when the system is sized for how you use power in the evening. Under NEM 3.0 exports earn roughly 5–9¢/kWh, so a battery that shifts your daytime production to the 4–9 pm peak is where the savings are. We model both ways and show you.
The homeowner credit (25D) ended for systems completed after Dec 31, 2025. The 48E credit still applies through Smart Own, lease or PPA, with similar savings taken off the price up front, even if you don't owe taxes.
Only if the roof won't outlast the panels. We check first and tell you honestly. If it needs work, roof and solar are quoted together.
Yes. The utility's fixed charge stays, and most homes still buy some evening power. The goal is to shrink the bill, not to pretend it disappears.
A written estimate first, for your home. If you already have another quote, we compare it side by side for a comparable system.
Yes, though adding it with the solar is cheaper and keeps one permit set.
An owned system transfers with the house. With a lease or PPA, the buyer has to take over the contract or you buy it out.
Typically several weeks from signed estimate to permission to operate; design, permit and utility approval set the pace. Your project plan shows your timeline.
We do. Two local offices, three generations, and we answer the phone.
Shield Your Home With Spartan Strength
Prefer to talk? (707) 419-3155, real people answer.