Solar installations in Maine
13,671 recorded installations — prices, growth by year, county breakdown and the installers doing the work.
Dataset updated . Sources: LBNL Tracking the Sun + city permit records + state programs + USGS/EIA utility-scale.
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 | 3,928 | 213.3 MW | $3.72/W |
| York County | 1,829 | 308.3 MW | $3.73/W |
| Androscoggin County | 939 | 242.6 MW | $4.52/W |
| Kennebec County | 827 | 386.0 MW | $3.68/W |
| Waldo County | 739 | 103.1 MW | $3.49/W |
| Lincoln County | 661 | 101.3 MW | $3.59/W |
| Knox County | 638 | 65.2 MW | $3.50/W |
| Oxford County | 554 | 151.1 MW | $4.03/W |
| Sagadahoc County | 544 | 44.6 MW | $3.77/W |
| Somerset County | 305 | 285.4 MW | $3.59/W |
| Franklin County | 201 | 94.3 MW | $3.32/W |
| Penobscot County | 164 | 94.8 MW | $3.88/W |
| Hancock County | 156 | 27.3 MW | $3.72/W |
| Piscataquis County | 55 | 49.9 MW | $4.52/W |
| Aroostook County | 42 | 114.1 MW | $3.24/W |
| Washington County | 12 | 20.2 MW | $3.58/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?
PanelCensus records 13,671 solar installations in Maine, totalling 2.5 GW of capacity — compiled from LBNL's Tracking the Sun, city permit records, state programs and USGS/EIA utility-scale data. (Coverage depends on what the state publishes, 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.