OER Monarch is a solar power facility located in Upper Marlboro, Maryland, operating under the jurisdiction of the ReliabilityFirst Corporation within the PJM Interconnection power control area. With an operating capacity of 2 megawatts, the plant harnesses solar energy as its primary fuel source. The facility is managed by Standard Solar, which also serves as the majority owner, while Brookfield Corporation holds the ownership stake. As an unregulated entity, OER Monarch contributes to the growing renewable energy landscape, aligning with industry standards and sustainability goals.