Solar in Walnut Creek, CA
With PG&E's electricity at about 40.5¢ per kWh and 1,664 kWh of sun per kW, solar is worth it for a typical Walnut Creek home today: about a 10.1-year payback.
- Payback, typical home
- 10.1 yrsCalifornia: 10.9 yrs
- 25-year net
- $24,639after paying $10,700
- Sun
- 1,664kWh per kW per year
- Electricity
- 40.5¢125% above U.S. average
A typical Walnut Creek home, by the numbers
| Utility | PG&E |
|---|---|
| Electricity use | 405 kWh a month |
| Best-value system | 3 kW, about 7 panels, 4,992 kWh a year (103% of use) |
| Cost | $10,700 |
| First-year savings | $971 |
| Payback | 10.1 years |
| Exported power | 3.9¢/kWh (PG&E) |
Cash purchase, no federal credit, 4.0% yearly rate increases. Run it with your own numbers.
Homes in Walnut Creek
- Owner-occupied homes
- 64%
- Single-family detached
- 37%
- Median home value
- $1.1M
- Median year built
- 1974
- Population
- 70,088
- Solar installs, last 3 years*
- 1,641
- Roofs suitable for solar†
- 93%
Census ACS 2020–2024. *Installations in public records for this area's ZIP codes. †Share of 16,015 buildings Google Project Sunroof rated technically suitable (2019 snapshot).
Older housing stock. Many homes here were built before 1975. Have the roof and electrical panel checked before signing; a roof or panel upgrade can add thousands. Roof first?
Installers working in Walnut Creek
Companies with the most installations in Walnut Creek's ZIP codes over the last 3 years, from public records. We don't take payment for placement.
- Sunrun 227 installs
- Tesla Energy 144 installs
- Citadel Roofing And Solar 137 installs
- GOT Watts Electric, Solar & Hvac 107 installs
- Your Energy Solutions 59 installs
- SunPower 47 installs
- Solar Technologies 46 installs
- Ambrose Solar 44 installs
- Diablo Solar Services 34 installs
- Semper Solaris 33 installs
Always verify the license and get at least three quotes. Compare quotes side by side.
Questions about solar in Walnut Creek
Is solar worth it in Walnut Creek, CA?
For a typical home in Walnut Creek, solar is worth it at 2026 prices: a 3 kW system costs about $10,700 after state incentives, saves about $971 in year one and pays back in about 10.1 years. Enter your address for an estimate based on your roof and bill.
How much solar power does a system produce in Walnut Creek?
About 1,664 kWh per year for each kW of panels on a south-facing roof, based on PVWatts and local weather. That's 0% more than the California average. East- or west-facing roofs produce roughly 10–20% less.
Who is the electric utility in Walnut Creek?
Most homes in Walnut Creek are served by PG&E, at about 40.5¢ per kWh on average.
How much do solar panels cost in Walnut Creek?
A fair cash price is around $2.90 per watt before incentives, so about $10,700 for a 3 kW system. There's no federal tax credit for homeowners who buy in 2026.
Nearby
- Pleasant Hill 10.2 yrs
- Lafayette 10.2 yrs
- Concord 10.1 yrs
- Danville 10.1 yrs
- Martinez 10.2 yrs
- Pittsburg 10.1 yrs
- San Ramon 10.2 yrs
- Benicia 10.2 yrs
- All of California
Data: PVWatts (National Laboratory of the Rockies), EIA-861 2025 adjusted to 2026, U.S. Census ACS, LBNL Tracking the Sun, state policy research as of October 2026.