Barker Lower is a hydraulic turbine power plant located in Auburn, Maine, within the Northeast Power Coordinating Council (NERC) region. With an operating capacity of 1.5 MW, the plant is managed by Kei (Maine) Power Management (III) and is unregulated. The majority ownership lies with KEI (USA) Power Management, which is part of the Kruger holding company. The plant utilizes water as its fuel source and primarily sells power to Central Maine Power Company, contributing to the local energy grid under the ISO New England power control area.