GMR Infrastructure Limited to Acquire 50% Stake in InterGen

Burlington, MA, June 25, 2008 – InterGen announced today that GMR Infrastructure Limited has signed a purchase agreement under which GMR will acquire a 50% interest in InterGen from AIG Highstar Capital II, L.P. and affiliates. GMR Infrastructure Limited will jointly own InterGen with the Ontario Teachers’ Pension Plan (Teachers’). Teachers’ has been a 50% owner of InterGen since 2005. The transaction remains subject to final agreements and regulatory approvals, but is expected to close in the third quarter of 2008.

Neil H. Smith, President and CEO of InterGen, said, “We are very pleased that GMR, with its significant power and infrastructure development experience, has made this strategic investment in InterGen. This is a positive step in strengthening our position as a leading owner, operator and developer of global power projects.”

InterGen is a global power generation firm with twelve power plants representing a total generation capacity of 8,086 MW (6,231 net equity MW). InterGen’s plants are located in the UK, the Netherlands, Mexico, the Philippines and Australia. These facilities include 5,280 net equity MW in operation, 428 MW under construction and 523 MW under agreement.