The province's Auditor General is expected to release a scathing annual report on Tuesday.
Part of its focus, is expected to be Ontario Power Generation (OPG).
That is just one of a list of other audits planned by Bonnie Lysyk.
It will also look at Service Ontario, autism programs, provincial parks, health human resources, land ambulance, healthy school strategy, private schools, rehab services and violence against women.
There had been suspicions that OPG would come under the microscope soon, with a growing number of executives making the sunshine list. That includes president and CEO Tom Mitchell, who raked in $1.7 million last year. That made him the highest paid person in the Ontario public sector.
There were 8,000 OPG workers making over $100,000 a year.
The Auditor's report comes a day after the province announced plans to table legislation to cap senior public sector salaries.
This has been an NDP demand for over a year, with leader Andrea Horwath making a recent push earlier this month. The Liberals had agreed to this request to get the budget passed.
Minister of Government Services John Milloy says they will also start consultations on pensions which will look specifically at the plans at Hydro One and OPG, amongst others.
Both opposition parties say this announcement is suspect, the Tories underlining this comes the day before the Auditor General's annual report which is expected to touch upon these issues.
This will be Lysyk's first annual report.