Rockford CS 1 is a solar power facility located in Rockford, Illinois, operating under the jurisdiction of the ReliabilityFirst Corporation within the PJM Interconnection power control area. With an operating capacity of 2 megawatts, this unregulated plant is owned and operated by Rockford CS, which also serves as its majority owner and holding company. The facility harnesses solar energy, contributing to the growing renewable energy landscape in the region.