Madison ESS is a state-of-the-art energy storage facility located in Madison, Maine, within the Northeast Power Coordinating Council (NERC) region. The plant operates with a capacity of 4.9 megawatts, utilizing advanced battery technology to provide reliable energy storage solutions. As part of the ISO New England power control area, Madison ESS plays a crucial role in enhancing grid stability and supporting renewable energy integration. The facility is operated by Agilitas Energy, which also holds majority ownership through its parent company, Agilitas Capital. Currently, Madison ESS operates under an unregulated status, positioning it to adapt swiftly to market demands and opportunities in the evolving energy landscape.