M-C Power Corp. (Illinois) operated its 5th full-area MCFC (molten carbonate fuel cell) stack from May to August 1995. That stack test, called Stack MCP-7, was successful, meeting all test plan goals, and generating data for the design of the 250-cell MCFC stack to be used in the power plant demonstration test located at Unocal`s Fred Hartley R&D Center in Brea, CA.