Solar installations in Maine
12,751 recorded installations — prices, growth by year, county breakdown and the installers doing the work.
Dataset updated . Refreshed from LBNL's Tracking the Sun public releases.
Most active
Top installers in Maine
| # | Installer | Installs in ME |
|---|
Growth
Installations by year
Bars: recorded installs · right column: median $/W that year.
By county
Solar by county in Maine
| County | Installs | Capacity | Median $/W |
|---|---|---|---|
| Cumberland County | 3,880 | 128.9 MW | $3.72/W |
| York County | 1,791 | 104.4 MW | $3.73/W |
| Kennebec County | 770 | 171.5 MW | $3.68/W |
| Waldo County | 717 | 37.9 MW | $3.49/W |
| Lincoln County | 639 | 57.7 MW | $3.59/W |
| Knox County | 618 | 35.2 MW | $3.50/W |
| Sagadahoc County | 536 | 27.4 MW | $3.77/W |
| Oxford County | 529 | 67.6 MW | $4.03/W |
| Androscoggin County | 476 | 30.4 MW | $4.52/W |
| Somerset County | 267 | 116.2 MW | $3.59/W |
| Franklin County | 185 | 36.0 MW | $3.32/W |
| Hancock County | 151 | 8.4 MW | $3.72/W |
| Penobscot County | 142 | 1.7 MW | $3.88/W |
| Piscataquis County | 49 | 771 kW | $4.52/W |
Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties with fewer than 50 recorded installs are shown but not indexed.
Frequently asked questions
How many solar installations are there in Maine?
LBNL's Tracking the Sun dataset records 12,751 residential and small-commercial solar installations in Maine, totalling 841.0 MW of capacity. (Coverage depends on the state's reporting programs, so actual totals are higher.)
How much does solar cost per watt in Maine?
The median installed price across priced systems in Maine is $3.71/W pre-incentive. Year-by-year medians are shown on this page.
Who are the biggest solar installers in Maine?
No resolved installers recorded.