Solar Energy Data for Every US State
Explore 3,426,466 solar installations across 50 states. Compare costs, incentives, sun hours, and savings backed by government data.
3,426,466Installations50States Covered$4.18/WAvg Cost
Total Installations
3,426,466
Residential & commercial
Avg Cost per Watt
$4.18/W
Median $3.96/W
Total Capacity
54,721 MW
92% residential
Avg System Size
16 kW
8% commercial
Solar Cost Trend (2000 – 2024)
Average cost per watt over time
Avg Cost per Watt
Top States for Solar
Ranked by total installations
1
California
- Installations
- 1,921,220
- Avg Cost
- $4.46/W
- Capacity
- 17,997 MW
2
Arizona
- Installations
- 293,541
- Avg Cost
- $4.47/W
- Capacity
- 7,216 MW
3
Texas
- Installations
- 204,286
- Avg Cost
- $3.92/W
- Capacity
- 2,252 MW
4
New Jersey
- Installations
- 192,243
- Capacity
- 4,092 MW
5
New York
- Installations
- 161,816
- Avg Cost
- $4.47/W
- Capacity
- 7,765 MW
6
Massachusetts
- Installations
- 140,908
- Avg Cost
- $4.31/W
- Capacity
- 3,954 MW
7
Colorado
- Installations
- 108,882
- Avg Cost
- $4.37/W
- Capacity
- 1,101 MW
8
Illinois
- Installations
- 61,031
- Avg Cost
- $6.90/W
- Capacity
- 1,326 MW
9
Connecticut
- Installations
- 54,917
- Avg Cost
- $4.03/W
- Capacity
- 914 MW
10
New Mexico
- Installations
- 53,058
- Avg Cost
- $4.95/W
- Capacity
- 433 MW
Installation Growth
Annual solar installations over the past 5 years
269,067 installations2019
281,782 installations2020
343,393 installations2021
448,420 installations2022
483,584 installations2023
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