08/13/2013 06:44 EDT | Updated 10/13/2013 05:12 EDT

Liberal campaign boss to testify at gas plant hearing

The man who helped orchestrate the Ontario Liberals' three election victories is slated to testify under oath today about the party's decision to cancel gas plants in Oakville and Mississauga at a cost of at least $585 million.

Don Guy, a longtime chief of staff to former premier Dalton McGuinty, will be grilled by opposition MPPs who are expected to ask what role Guy played in scrapping the energy projects.

Guy will also likely be asked why the government was so slow to release all related documents requested by a committee.

The opposition parties call the cancellations an expensive Liberal seat “saver program,” and the governing party did hold all five ridings in the area in the 2011 election.

Then-energy minister Chris Bentley initially said it was a Liberal campaign decision to cancel the partially-built Mississauga gas plant just two weeks before election day, but McGuinty later testified that it was his decision alone.

Recently released emails show the Liberals running in McGuinty's office wanted cabinet ministers to say it was the government that killed the gas plants, not the Liberal campaign team.