TORONTO -- NDP Leader Andrea Horwath says Ontario's auditor general should investigate the cancellation of 750 renewable energy contracts.

Horwath has asked Auditor General Bonnie Lysyk to probe the cost of tearing up the agreements after the Progressive Conservative government made the move last summer.

The request comes a day after the New Democrats uncovered a report showing the government has budgeted $231 million to cover wind-down fees.

Horwath says she's concerned the cost to scrap the agreements may exceed the amount the Tories have earmarked.

Energy Minister Greg Rickford would not say if the government will ask the auditor to look into the cancellation costs.

He defended ending the contracts, saying they supplied power that wasn't required and were driving up electricity prices.

This report by The Canadian Press was first published Nov. 20, 2019.