IESO appeals for reduced electricity consumption in the GTA


The Independent Electricity System Operator (IESO) is asking consumers in the Greater Toronto Area (GTA) to reduce their use of electricity during peak demand times for June 26 and 27.

High temperatures and high humidity levels are resulting in increased demand for electricity through air conditioning use. There are also limitations on the generation and transmission system serving the GTA as a result of equipment outages.

As a precautionary measure, the IESO is asking customers to reduce demand to help relieve the strain on the system serving the GTA. Curtailment efforts can reduce demand and provide additional operating flexibility to help maintain reliability in the area should further problems develop.

Residential and business consumers are being asked to reduce their electricity consumption, where possible, between noon and 8:00 p.m. over the next two days.

Consumers can reduce the demands on the electricity system between noon and 8:00 p.m. by:

- Turning off all but essential internal and external lights;

- Set air conditioners to 26 degrees Celsius or higher, or use fans as an alternative;

- Close curtains and blinds to keep out the sun and retain cooler air inside; and

- Limit the use of major power-consuming equipment such as dishwashers, washers and dryers and swimming pool pumps.

Related News

A tidal project in Scottish waters just generated enough electricity to power nearly 4,000 homes

MeyGen Tidal Stream Project delivers record 13.8 GWh to Scotland's grid, showcasing renewable ocean energy.…
View more

UK net zero policies: What do changes mean?

UK Net Zero Policy Delay shifts EV sales ban to 2035, eases boiler phase-outs, keeps…
View more

ETP 2017 maps major transformations in energy technologies

Global Energy Electrification drives IEA targets as smart grids, storage, EVs, and demand-side management scale.…
View more

Frustration Mounts as Houston's Power Outage Extends

Houston Power Outage Heatwave intensifies a prolonged blackout, straining the grid and infrastructure resilience; emergency…
View more

Trudeau vows to regulate oil and gas emissions, electric car sales

Canada Oil and Gas Emissions Cap sets five-year targets to cut sector emissions toward net-zero…
View more

Are we ready for electric tractors?

Electric tractors are surging, with battery-powered models, grid-tethered JD GridCON, and solar-charged designs delivering autonomous…
View more

Sign Up for Electricity Forum’s Newsletter

Stay informed with our FREE Newsletter — get the latest news, breakthrough technologies, and expert insights, delivered straight to your inbox.

Electricity Today T&D Magazine Subscribe for FREE

Stay informed with the latest T&D policies and technologies.
  • Timely insights from industry experts
  • Practical solutions T&D engineers
  • Free access to every issue

Download the 2026 Electrical Training Catalog

Explore 50+ live, expert-led electrical training courses –

  • Interactive
  • Flexible
  • CEU-cerified