The applicants, who were unsuccessful in their constitutional challenge regarding Ontario's response to climate change, and the respondent, who successfully defended the application, both sought costs.
The respondent sought $45,000 on a partial indemnity basis, while the applicants sought $96,999.79 or, alternatively, no costs.
The court applied the factors for public interest litigation and declined to award costs to the successful respondent, noting the applicants had no pecuniary interest, the issues were of existential public importance, and the respondent had superior capacity to bear costs.
The court also declined to award costs to the unsuccessful applicants, finding this was not one of the rare cases justifying such an award.
The court ordered that each party bear their own costs.