TORONTO - Ontario's Progressive Conservatives say the Liberal government used the code name Project Vapour to hide the cost of cancelling a generating station in Oakville from the public.

The Opposition uncovered the Project Vapour code name in 20,000 documents released last Friday on the cancelled gas plant in Oakville and another in nearby Mississauga, which followed 36,000 pages of documents released last month.

PC energy critic Vic Fedeli says Friday's second batch of documents is proof Premier Dalton McGuinty and several cabinet ministers misled the legislature by insisting all the relevant documents had been released Sept. 24.

Fedeli says McGuinty resigned suddenly Monday and prorogued the legislature knowing his government would face a second contempt motion.

The first contempt motion against Energy Minister Chris Bentley, which was scheduled to go to the finance committee for public hearings, was killed _ along with question period and all other legislative business _ by Monday's surprise prorogation.

The Liberals say it will cost taxpayers $230 million for cancelling the two energy projects, but the Tories and New Democrats say it's at least triple that amount and was used to save Liberal seats in last fall's election.

The Liberals say it's common practice to give code names to sensitive projects involving negotiations, especially with private companies.

The Tories and New Democrats said Wednesday they were convinced the Liberals still had not given up all the documents on the cancelled energy projects.

"With code names and curiously missing emails, this package of documents makes clear that Dalton McGuinty and his government are still not complying with an order of the House, and are still not telling Ontarians the truth," said Fedeli.

"With Project Vapour coming to light, no wonder Dalton McGuinty resigned."

Earlier on HuffPost:

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• Dalton McGuinty's Scandals

  When you lead Canada's biggest province for nine years you're bound to have some missteps. Ontario's Premier Dalton McGuinty has had his share of scandals and mistakes. <p>We highlight a few that caused him more headaches than usual. <p>Photo: Ontario Liberal Party

• Health Premiums

  Back in 2004, a relatively new Liberal government under Premier Dalton McGuinty was forced to go back on a campaign promise not to raise taxes and instituted a health premium of between $300-$900. Photo: Alamy

• Energy Plan

  In 2006, the Liberals tried to announce a new $46-billion energy plan that would see renovations of many of Ontario’s power plants. But the plan became a problem for the Liberals when <em>the Globe and Mail </em>revealed that the government tried to exempt their plans from environmental assessments. Photo: Shutterstock

• eHealth

  The government’s plans to modernize medical records in the province ran into massive scandal when reports of overspending, waste and possible conflict of interest were revealed at <a href="http://en.wikipedia.org/wiki/EHealth_Ontario">eHealth</a>, the agency responsible for building a new electronic records system. The scandal forced the resignation of Health Minister David Caplan. <P>Photo: Shutterstock

• G20 Police Laws

  Dalton McGuinty and the Liberals were criticized for laws giving police greater powers to ensure security during the <a href="http://www.cbc.ca/news/canada/toronto/story/2010/12/08/mcguinty-g20-ombudsman-report652.html">G20 in 2010</a>. The laws were seen by civil rights groups as draconian. Andre Marin, Ontario’s ombudsman also <a href="http://www.thestar.com/news/gta/torontog20summit/article/902817--ombudsman-charges-g20-secret-law-was-illegal">criticized the government</a> calling the laws and police action a massive violation of civil rights. <p>Photo: AP Files/Carolyn Kaster

• Ornge

  Ontario’s air ambulance service, Ornge, <a href="http://www.huffingtonpost.ca/tag/ornge-scandal">caused another headache for McGuinty’s Liberals</a> after reports of financial irregularities, cost overruns, huge salaries for managers being kept secret and reports of kickbacks began to emerge in the media. <P>Photo: CP/Globe and Mail

• Canceled Power Plants

  Hobbled by scandal and facing a resurgent Conservatives in the 2011 provincial election, the <a href="http://www.globaltoronto.com/timeline/6442734189/story.html">Liberals cancelled two power plants</a> in the GTA despite the fact it would cost taxpayers several hundred million dollars. The move would dog the Liberals and is seen as a factor in the resignation of Premier Dalton McGuinty on Monday night. <P>Photo: Michelle Siu/CP

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