Solar installer
A1 Sun
Based at Berkeley, CA 94707. Installed solar on 285 homes since 2023 in California. Installing since 2007. Latest install on record: August 2026.
- Homes since 2023
- 285
- Median price
- $5.11/W
- Typical system
- 5.3 kW
- Leased or PPA
- 0%
Price
Homes that bought their system from A1 Sun paid a median $5.11/W installed, and the middle half paid $4.48/W–$5.87/W (158 systems since 2023, before incentives). That's $1.04 a watt above the California median of $4.07/W.
39% of its recent systems included a battery.
Where it installs
Counties with homes it installed since 2023, busiest first.