In short
- 59 home solar permits were issued in Winnetka, Los Angeles in 2025, up 59% from 2024 (37).
- 14% of them included a battery.
Solar permits in Winnetka, Los Angeles by year
| Year | Solar permits | With a battery | Battery share | Battery-only permits |
|---|---|---|---|---|
| 2026 (through Sep 27) | 67 | 13 | 19% | 3 |
| 2025 | 59 | 8 | 14% | 4 |
| 2024 | 37 | 7 | 19% | 1 |
| 2023 | 84 | 12 | 14% | 8 |
| 2022 | 111 | 15 | 14% | 3 |
| 2021 | 98 | 24 | 24% | 5 |
| 2020 | 34 | 7 | 21% | 2 |
System sizes in Winnetka, Los Angeles
| Figure | Median | Middle half | Permits |
|---|---|---|---|
| Solar size | 6.6 kW | 3.9 kW – 9.6 kW | 178 |
| Battery size | too few to say | 7 |
Middle half: the range covering the middle 50% of records (a quarter were lower, a quarter higher).
How much a system here produces
Modeled for the San Fernando Valley climate, each kilowatt of south-facing panels makes about 1,690 kWh a year, so a median-size 6.6 kW system makes about 11,200 kWh a year. Source: PVWatts (National Laboratory of the Rockies), 20° tilt, 14% losses. Shade, roof direction and panel type change real output.
Your utility and solar billing
- LADWP: retail net metering (exports credited at your normal rate).
Questions about solar in Winnetka, Los Angeles
How many homes in Winnetka, Los Angeles have solar?
The City of LA issued 490 home solar permits in Winnetka, Los Angeles since 2020, including 59 in 2025. A permit means the work was approved; older systems from before the data starts aren't counted.
Do new solar homes in Winnetka, Los Angeles get batteries?
14% of the home solar permits issued in Winnetka, Los Angeles in 2025 included a battery.
Which utility serves Winnetka, Los Angeles?
Los Angeles Department of Water and Power (LADWP): retail net metering (exports credited at your normal rate).
About this data
- Counts are City of LA electrical permits for 1-or-2-family homes, by issue year: a permit means the work was approved, not that it finished. Revisions to an earlier permit aren't counted again.
- Solar sizes come from the permit's work description; batteries are found by keywords (battery, energy storage, Powerwall) because the data has no battery flag.
- LADBS doesn't record installer names or prices, so those figures aren't available for the City of LA.