Dexter said when he spoke with the town's mayor at the end of June while attending the opening of a wind farm, Robert Small beamed with pride about the project.
At the time, they were celebrating the opening of a $61-million development consisting of 15 wind turbines, which can generate enough electricity to power 10,000 homes a year.
"It's the darndest thing," Dexter said Thursday. "I sat with the mayor of Amherst at the opening of that facility. He could not have been more effusive about how proud he was of this project."
Small did not return a message seeking comment.
The town council has recently sent Dexter a letter saying residents want him to halt the projects until Health Canada complete a study on the effects of wind turbines on human health.
Dexter said he won't delay the projects because there isn't evidence linking wind turbines to health problems.
"I have not seen any credible study that suggests that is the case," he said.
A 2010 study by Ontario's chief medical officer of health showed no negative effects, but the results of Health Canada's study aren't expected until next year.
Dexter said the provincial government will make a decision on more wind turbine projects this week.