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Waterboro

Solar power plant · York County, Maine

Nameplate capacity
4.9 MW
Rank in Maine
#149
of 274 plants
In service since
2023
July 2023

Details

Primary fuel
Solar
Technology
Solar Photovoltaic
Operator
Madison Energy Investments LLC
County
York County
Generating units
1
Share of state capacity
0.08%
Rank among solar plants in Maine
#77 of 175
EIA plant code
68394

Generating units

Individual generating units at Waterboro
UnitTechnologyNameplateSummerOnlineStatus
WBMPVSolar Photovoltaic4.9 MW4.9 MW2023Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in Maine

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 4.9 MW solar plant and a 4.9 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Maine power plants · What Maine actually generates