In 2nd of March 2009, the Indonesian Minister of Energy and Resources officially opened Wayang Windu Unit 2, with generation capacity from a single turbine/generator, of 117 MW. So, Wayang Windu is now delivering a total of 227 MW of electricity to its buyer, PLN, which dispatches the electricity into the West Java transmissions grid. The potential for significant further expansion at Wayang Windu became apparent during the development drilling for Unit 2. Some of the wells drilled for Unit 2 tested more than 50 MWe of steam, and are producing sustainability at over 40 MWe, probably the largest sustainability steam production in the world for a single well.