South Huron to host free Open House featuring Ontario’s Independent Electricity System Operator

Posted on Wednesday September 04, 2019

The average Ontario household uses about 9,500 kWh of electricity per year and the single most expensive appliance to run is a central air conditioner. With future projections of warmer temperatures, the average number of days each year that require air conditioning (temperatures above 30 degrees Celsius) is expected to increase and influence a change in electricity demand.

The electricity system in Ontario needs to continue to transform and adapt to unexpected events and long term trends. In 2018, electricity demand in Ontario peaked for the year on September 5th at 23,240 megawatts. This peak demand event came during a five day period of unseasonably high temperatures, with daytime highs in South Huron ranging from 28 C to 32 C reached on September 5th. Interestingly, solar generation and a reduction in usage by large industrial consumers through a pre-arranged conservation agreement helped to reduce the impact of this particular event on the entire power system.

Planning for future changes is important to ensure the efficiency and reliability of the system. The Independent Electricity System Operator (IESO) is responsible for ensuring the reliability of Ontario’s power system. This work includes balancing the supply of and demand for electricity on a second-by-second basis by directing its flow across high-voltage transmission lines to where it’s needed. The IESO is also responsible for planning for the future needs of the province’s power system by considering things like expected demand, weather, economic data and government policies that impact demand.

What does the future of our electricity system look like?

Is our community ready for changes to the electricity system?

How can households save money on home hydro bills? 

These questions will be explored at a FREE energy-focused community open house on Monday, September 9th from 4:00 to 6:00 PM. Hosted by the Municipality of South Huron at the South Huron Recreation Centre, the IESO will discuss Ontario’s electricity system, how they support local initiatives and how to help shape our community’s electricity future. There will be an opportunity to discuss energy efficiency programs and resources to help you reach your household energy savings goal. For more information about this open house, visit or contact Stacey Jeffery, Climate Change Officer, 519-235-0310 ext. 247.


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