AMP ELECTRIC
18 installs · $2.91/W avg
Illuminate Solar Company
83installations on record
$2.69median price per watt
Residential Solar
Installation Statistics
83
Quotes in Database
9.1 kW
Avg System Size
$35,145
Avg Total Price
Solar Price per Watt
$2.83/W
Average
$2.69/W
Median
$2.36 – $3.41
Typical Range (P25–P75)
Battery Price per kWh
$958/kWh
Average
$900/kWh
Median
$830 – $1068
Typical Range (P25–P75)
Top ZIP Codes
Recent Installations
LocationSystemPrice$/W · $/kWhDate
Contra Costa County, CA33.2 kW81 kWh$95,000$1.54/W$539/kWhMay 14, 2026Walnut Creek, CA 945975.5 kW13.5 kWh$22,275$2.14/W$779/kWhMay 7, 2026Solano County, CA9 kW27 kWh$35,000$1.91/W$658/kWhMay 1, 2026Richmond, CA 948014 kW$11,000$2.74/WApr 20, 2026Auburn, CA 9560327.9 kW$88,200$3.17/WApr 16, 2026Auburn, CA 9560210.5 kW$32,700$3.11/WApr 13, 2026Oakland, CA 946025.5 kW$22,060$4.02/WApr 13, 2026San Francisco, CA 941225.5 kW$19,200$3.51/WApr 10, 2026Orinda, CA 9456311.8 kW$39,900$3.39/WApr 10, 2026Orinda, CA 945639.1 kW30.24 kWh$41,000$1356/kWhApr 8, 2026Walnut Creek, CA 945967.7 kW13.5 kWh$34,250$2.62/W$1038/kWhApr 6, 2026Contra Costa County, CA8.1 kW13.5 kWh$32,200$2.38/W$953/kWhMar 31, 2026Contra Costa County, CA10.5 kW27 kWh$48,800$2.43/W$859/kWhMar 31, 2026San Jose, CA 951245.9 kW$10,800$1.84/WMar 27, 2026Auburn, CA 956027.3 kW$45,900$6.28/WMar 23, 2026Walnut Creek, CA 9459614.4 kW$59,620$4.14/WMar 20, 2026Contra Costa County, CA6.6 kW27 kWh$39,700$2.61/W$835/kWhMar 11, 2026Contra Costa County, CA11.2 kW27 kWh$52,800$2.54/W$906/kWhFeb 22, 2026San Francisco, CA 941224.7 kW$16,640$3.52/WFeb 13, 2026Walnut Creek, CA 9459812.2 kW$42,456$3.48/WFeb 6, 2026Page 1 of 5