Smart Devices Power Canada's Next Grid Revolution

Utilities tap smart thermostats and appliances to ease peaks and delay costly new plants

21 Jul 2025

Canada's electricity grid is being reshaped not by giant turbines or tall power lines, but by small devices inside people's homes.

From smart thermostats to connected appliances, utilities are tapping everyday technology to manage demand and strengthen the system.

Ontario has become an early testing ground. The Independent Electricity System Operator has expanded its Peak Perks program, which now links more than 200,000 smart thermostats across the province. At moments of high demand, this network can dial back heating or cooling just enough to ease pressure, freeing up capacity equal to that of a mid-sized city. Small businesses are also joining in, widening the pool of participants who receive cash rewards for flexibility.

The strategy marks a striking departure from the past. For decades, utilities thrived on selling more electricity. Today, the focus is shifting toward timing. When and how power is used matters as much as how much is consumed. By smoothing peaks, operators can postpone expensive infrastructure projects while lowering costs for consumers.

Challenges persist. Not every household owns internet-connected devices, and some are wary of letting utilities exert even limited control. Yet as electric vehicles multiply and extreme weather intensifies, industry observers say these programs are essential to prevent strain on the grid.

The lesson is simple. When millions of small adjustments add up, they can rival the output of a power plant. Canada's energy future may hinge less on building new supply and more on weaving intelligence into the demand side of the system.