United States solar installation & market data
Updated October 2, 2026 By The SolarDNA Data Team
Solar market statistics for 16,340 U.S. zip-code markets across 50 states, from California and Texas to New Jersey. Every market page reports solar systems and capacity, median installed cost per watt, adoption rate, trailing-12-month growth, permit activity and SolarDNA's Market Score, refreshed continuously.
SolarDNA tracks 4M+ installations across 16.3K+ zip markets.How we build this data →
Largest markets
The largest solar markets in the United States
The 12 states with the most solar systems, with each market's median installed cost, adoption rate and trailing-12-month growth. Updated October 2, 2026.
1
California
United States
Solar systems
2,337,728
Median cost
$4.26/W
Adoption
30.9%
12-mo growth
▲ 1.1%
2
Arizona
United States
Solar systems
340,393
Median cost
$4.18/W
Adoption
17.6%
12-mo growth
▼ 9.9%
3
Florida
United States
Solar systems
280,274
Median cost
$3.80/W
Adoption
4.7%
12-mo growth
▼ 3.7%
4
New York
United States
Solar systems
274,093
Median cost
$4.16/W
Adoption
6.4%
12-mo growth
▲ 25.2%
5
New Jersey
United States
Solar systems
244,132
Median cost
—
Adoption
10.4%
12-mo growth
▲ 20.1%
6
Massachusetts
United States
Solar systems
233,679
Median cost
$4.17/W
Adoption
13.3%
12-mo growth
▲ 22.8%
7
Texas
United States
Solar systems
231,633
Median cost
$3.90/W
Adoption
3.4%
12-mo growth
▼ 23.4%
8
Colorado
United States
Solar systems
183,743
Median cost
$4.35/W
Adoption
11.2%
12-mo growth
▼ 11.2%
9
Nevada
United States
provisional
Solar systems
146,941
Median cost
—
Adoption
20.8%
12-mo growth
▼ 50.6%
10
Illinois
United States
Solar systems
136,888
Median cost
$6.56/W
Adoption
4.0%
12-mo growth
▲ 23.1%
11
Connecticut
United States
Solar systems
128,070
Median cost
$3.79/W
Adoption
13.6%
12-mo growth
▼ 5.6%
12
Maryland
United States
Solar systems
127,671
Median cost
$3.71/W
Adoption
7.8%
12-mo growth
▲ 35.7%
All states
Every U.S. solar market, scored
Export all states (CSV)Alabama11 29Alaska3.4K 42Arizona340.4K 59Arkansas16.7K 15California2.3M 53Colorado183.7K 50Connecticut128.1K 51Delaware15.4K 31District of Columbia32.2K 48Florida280.3K 53Georgia16.3K 41Hawaii125.8K 57Idaho24.6K 27Illinois136.9K 43Indiana11.9K 31Iowa23.8K 37Kansas10.1K 38Kentucky8.9K 30Louisiana32.6K 29Maine22.5K 36Maryland127.7K 68Massachusetts233.7K 58Michigan29K 37Minnesota26.4K 36Mississippi2.3K 34Missouri31.5K 36Montana14.3K 36Nebraska3.6K 37Nevada146.9K 43New Hampshire27.3K 35New Jersey244.1K 62New Mexico63.1K 53New York274.1K 59North Carolina62.6K 40Ohio32.7K 36Oklahoma16.9K 25Oregon65.7K 43Pennsylvania105.3K 50Rhode Island28.7K 46South Carolina37K 34South Dakota640 20Tennessee2.4K 28Texas231.6K 42Utah86.7K 49Vermont31.3K 39Virginia74.2K 56Washington61.6K 39West Virginia5.8K 38Wisconsin22.1K 41Wyoming3.9K 31