InterGen Interim Results Release and Conference Call

Burlington, MA, September 27, 2007 - InterGen announced today that it has scheduled a conference call with bondholders and analysts for Thursday October 4, 2007 at 11:00 AM EDT to report operating and financial results for the six month period ending June 30, 2007.

The call is open to bondholders and analysts and will be hosted by Neil Smith, InterGen President and CEO, Martin Rees, InterGen CFO and Dan Rorabaugh, InterGen COO.

Institutional investors who would like to participate in the call may do so by dialing (800) 593-1293 (domestic) or 1(210) 234-0008 (international). Pass code: INTERGEN 104.

To view the accompanying slide presentation and financial information, please contact investor_relations@intergen.com. The slide presentation and a replay of the call will be available on the company’s website through the next results call in December 2007.

InterGen is a global power generation firm with 9 power plants representing an equity share of 5,235 MW of production capacity. InterGen plants are located in the UK, the Netherlands, Mexico, the Philippines and Australia. InterGen is jointly owned by the Ontario Teachers' Pension Plan and AIG Highstar Capital II, L.P.