See where Ontario's power comes from, when the grid is clean and when it's not.


//Hourly Power & Demand

Track Ontario’s electricity grid hour-by-hour and plant-by-plant using the most current, trustworthy data. Gridwatch breaks out the total generation by fuel type with an option to drill down further for hourly capability and output figures for each power plant. Gridwatch also tracks hourly imports, exports and Ontario's Provincial demand.

//Total Emissions & Intensity

See the total carbon emissions and carbon intensity of Ontario's electricity grid. Drill down into the equivalent emissions in terms of cars and trees to put things in context. Backed by a peer reviewed and published methodology, carbon intensity is a simple indication of how clean (or dirty) the grid is.

//Power Plant Details

Gridwatch not only breaks down total generation by fuel type but also by individual power plant. Each plant's capability and actual contribution a listed for every hour. Want to know more about a specific plant? Location, owner/operator and a specific knowledge nugget is provided for each facility.

//Maps & Trends

View all power plant locations colour coded by fuel type on an interactive map of Ontario. Filter by fuel type, zoom in/out and tap for details about the specific plant. Track both power and emissions trends for the current day along with Ontario's Time-Of-Use schedule. Interact with the trend graphs to see the impact each fuel type has on the grid.

A note to our users outside of Ontario: Gridwatch only tracks the Province of Ontario's electricity grid and does so in Eastern Time.

What’s New

Version 2.3.0

- Updated for newer phones and tablets
- Refreshed icons and colours
- Maintenance and bug fixes

Please email us at with any issues, feedback or suggestions.

Ratings and Reviews

4.8 out of 5
246 Ratings

246 Ratings

Wally Fazoo ,

Cool as hell

This thing is great if you have an interest in energy and industry. If not, well, it’s still amazing they can do this.

Hedley123456789 ,

Love this app

I use this app at least once a day, and everytime I talk to elementary school and high school students about nuclear energy!

bds1953 ,

Good app

There is some missing info on various generating sites. Other generators are simply missing whether due to mothballing or some other unknown reason.

Developer Response ,

Thanks for the feedback bds1953!

We update individual plant details as they become available. If you see missing or incorrect information, please let us know at

Gridwatch uses the publicly available data from the IESO which includes transmission connected generation plants only. If plant generation data is available, it will be included in Gridwatch.


The Energy Insight Group Inc.
5.8 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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