[Power-Technology.com] A $40 million expansion of the Mokai geothermal power plant to 100 MW is planned for completion by April 2005. The Geothermal Combined Cycle configurations use both the steam and brine components of the geothermal fluid. The expansion has come after careful monitoring of the existing 60 MW station. Over 250 MW is eventually planned at the site. Electricity is delivered via a 20 km, 110 kV line to the Whakamaru national grid substation and sold into the national pool. During the first six months of operation the plant generated an average output of above 58 MW with an availability of above 96%.