"Everyone wants to have service delivery of their utilities and electricity on a regular basis," he said. "So council has a responsibility to ensure that the utilities are available under those circumstances."
The city's accounting department says it's "timely" to look into the sale because of an Ontario-sponsored tax exemption that expires on October 16.
The Electricity Transfer Tax Exemption would allow the city to avoid paying a 33 per cent tax when it sells electricity assets to other publicly owned electricity utilities in Ontario.
Since the first exemption in 1998, approximately 230 consolidations have occurred, according to the Ministry of Finance. But Valentinis remains skeptical.
"There really haven't been any sales to the public sector except a couple of 10 per cent interest sales by smaller utilities," he said.
"There's got to be a reason why other municipalities are not jumping to unload all these utilities."
In 2008, EnWin reported a net income of $7.9 million.