Appin-Tower Power Project 94, 1 MW gas engines with 6 MW contracted to Integral

First 6 of 6 paragraphs shown Electricity was supplied to the Appin Mine and West Cliff Colliery by the Integral Energy Network via existing 66 kilovolt (kV) powerlines. 6MW output was also contracted to Integral.
66 kV/11 kV substations John Brannon General Manager - Sustainable Development and External Affairs, BHP Billiton explained Power was transformed at the 66 kV/11 kV substations located at Douglas North and the electrical substations located adjacent to the three pit tops
94 gas engines: These were each capable of generating 1 MW of electricity from coal bed methane drained from the underground mine workings. Components of the Appin-Tower Power Project are located adjacent to the Appin West pit top and the Appin No. 1 and No. 2 shafts and fan site.
6 MW contracted to Integral: Electricity generated by the Appin-Tower Power Project is supplied to the Integral Energy Network. WestVAMP (commissioned in September 2007) also generates electricity which is used at the West Cliff Colliery.
WestVAMP steam turbine: WestVAMP consists of a steam turbine capable of generating up to 6 MW of electricity from mine ventilation air from the West Cliff Colliery. Once fully developed, the Douglas North Electricity Supply Substation was provide up to 25 MegaVolt Amperes (MVA) to be delivered via two boreholes at 11 kV from the surface to the underground mining operations at the Appin Mine.
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