Heeyeon Seo

Ontario Power Generation/Manager Maintenance

At a Glance
2025

Latest Salary

$171,780

2025

Total Compensation

$172,644

Incl. $864 benefits

Employer Rank

#4,349

Ontario Power Generation

Years on List

4

2020–2025

Salary History

Full History
2020–2025

Year	Employer	Position	Salary	Benefits	Total
2025	Ontario Power Generation	Manager Maintenance	$171,780	$864	$172,644
2024	Ontario Power Generation	Section Manager Maintenance	$108,766	$572	$109,338
2021	Ontario Power Generation	Assistant Environmental Advisor	$105,063	$508	$105,571
2020	Ontario Power Generation	Assistant Technical Engineer/Officer	$111,378	$498	$111,876

Also at Ontario Power Generation

#	Name	Position	Salary	Total
1	Kenneth Hartwick	Special Advisor	$1,907,409	$1,910,992
2	Nicolle Butcher	President and Chief Executive Officer	$1,596,218	$1,598,309
3	Steve Gregoris	Chief Nuclear Officer	$1,092,855	$1,096,651
4	Aida Cipolla	Chief Financial Officer and Chief Administrative Officer	$1,013,496	$1,016,119
5	Subo Sinnathamby	Chief Projects Officer	$981,476	$985,253
6	Mark Knutson	Chief Enterprise Engineering and Chief Nuclear Engineer	$856,947	$859,793
7	Jon Franke	Senior Vice President Nuclear	$826,655	$828,637
8	Shelley Babin	Chief Operations Officer	$748,469	$750,849
9	Brenda Macdonald	Chief Commercial Officer	$727,479	$729,740
10	David Kaposi	Executive Vice President Investment Strategy and Business Development	$701,432	$703,541

#1Kenneth Hartwick

Special Advisor

#2Nicolle Butcher

President and Chief Executive Officer

#3Steve Gregoris

Chief Nuclear Officer

Chief Financial Officer and Chief Administrative Officer

#5Subo Sinnathamby

Chief Projects Officer

Chief Enterprise Engineering and Chief Nuclear Engineer

Senior Vice President Nuclear

#8Shelley Babin

Chief Operations Officer

#9Brenda Macdonald

Chief Commercial Officer

#10David Kaposi

Executive Vice President Investment Strategy and Business Development

View all employees at Ontario Power Generation →