King County’s renewable energy project at its West Point Treatment Plant centered on the construction of a cogeneration power plant using the digester’s biogas as fuel for two 4.3 MW internal combustion engines to use both the heat and electricity for plant operations.  The $30,000,000+ project included two generators provided by Caterpillar and a complete structural retrofit of an existing building to house the biogas compressor equipment, biogas filters, instrumentation, exhaust heat exchangers and the mechanical and electrical work provided by Stellar J.  The plant was commissioned for operation in 2012.