Solar installations in Maine
22,412 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
New installs per year and the running cumulative total, plus % of homes with solar (ACS housing units).
By county
Solar by county in Maine
| County | Installs | % homes | Capacity | Median $/W |
|---|---|---|---|---|
| Androscoggin County | 473 | 0.94% | 212.3 MW | — |
| Cumberland County | 117 | 0.08% | 85.1 MW | — |
| Kennebec County | 66 | 0.10% | 214.6 MW | — |
| York County | 66 | 0.06% | 209.6 MW | — |
| Lincoln County | 45 | 0.19% | 43.8 MW | — |
| Somerset County | 41 | 0.14% | 169.2 MW | — |
| Aroostook County | 38 | 0.10% | 114.0 MW | — |
| Knox County | 36 | 0.15% | 30.6 MW | — |
| Oxford County | 36 | 0.10% | 83.6 MW | — |
| Waldo County | 36 | 0.16% | 66.3 MW | — |
| Penobscot County | 24 | 0.03% | 88.2 MW | — |
| Franklin County | 23 | 0.11% | 65.4 MW | — |
| Sagadahoc County | 19 | 0.10% | 23.7 MW | — |
| Hancock Countylimited | 7 | 0.02% | 18.9 MW | — |
| Piscataquis Countylimited | 7 | 0.05% | 49.1 MW | — |
| Washington Countylimited | 3 | 0.01% | 20.1 MW | — |
Counties derived from installation ZIP codes (Census ZCTA crosswalk) — approximate at boundaries. Counties marked limited have under 10 recorded installs, so their medians and penetration are indicative only. % homes = recorded installs ÷ housing units (U.S. Census ACS 5-Year, B25001).
Search every recorded Maine installation — by installer, size, date, storage and equipment.
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Top solar equipment in Maine
| # | Panel manufacturer | Systems |
|---|---|---|
| 1 | roof mounted | 48 |
| 2 | REC Solar | 31 |
| 3 | Hanwha Qcells (Qidong) Co. Ltd. | 25 |
| 4 | Qcells North America | 21 |
| 5 | LONGi Green Energy Technology Co., Ltd. | 8 |
| 6 | CSI Solar Co., Ltd. | 7 |
| 7 | Jinko Solar Co., Ltd | 7 |
| 8 | LG Electronics Inc. | 7 |
| # | Inverter manufacturer | Systems |
|---|---|---|
| 1 | SolarEdge Technologies Ltd. | 21 |
| 2 | ENPHASE | 13 |
| 3 | SMA America | 12 |
| 4 | Fronius International GmbH | 9 |
| 5 | Enphase | 8 |
| 6 | SolarEdge | 8 |
From recorded equipment on Maine systems (Tracking the Sun + state/permit data); counts are systems where the manufacturer is known.
Developers
Top solar developers in Maine
| # | Developer | Systems |
|---|---|---|
| 1 | Versant Power | 9 |
| 2 | ReVision Energy | 6 |
| 3 | Sundog Solar | 4 |
Developer/EPC named on the permit or program record — often the same firm as the installer.
Frequently asked questions
How many solar installations are there in Maine?
PanelCensus records 22,412 solar installations in Maine, totalling 2.8 GW of capacity — about 3.0% of the state's 746,552 housing units (U.S. Census ACS) — 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.