The Bar Mills Project consists of a 364-foot-long, 7-foot-high concrete gravity dam that impounds a 263-acre, 5.3-mile-long reservoir. The powerhouse contains two 2.0-MW generating units that discharge water into a 200-foot-long tailrace.

Project power is transmitted through a 30-foot-long, 34/2.4 kilovolt (kV) transmission line connected to the regional grid.