The Solar Mule is a solar power facility located in Oakland, Maine, within the Northeast Power Coordinating Council region. With an operating capacity of 1.5 MW, this unregulated plant harnesses solar energy to generate electricity. Operated by NRG Solar Mule and owned by NRG Energy, the facility primarily supplies power to Colby College. The plant is part of the ISO New England power control area, utilizing the sun as its fuel source to contribute to sustainable energy solutions in the region.