1 EXHIBIT 10.11.1 This June 27, 1997 amendment ("Amendment") to the Steam and Electricity Service Agreement between Cogenron Inc. (successor in interest to Northern Cogeneration One Company) ("Company") and Union Carbide Corporation ("Customer") dated...Steam and Electricity Service Agreement • April 1st, 1998 • Calpine Corp • Cogeneration services & small power producers • Texas
