Ontario Green Button Data Resource
Green Button is a standardized data format that allows users to download natural gas and electricity usage data (energy data) and account holder information from their utility provider, and authorize the secure, automatic transfer of this data to a third-party’s Green Button application of your choice.
Green Button data can help users make more informed choices about their energy use, switching electricity price plans or making efficiency investments to a user’s home or business.
How Green Button Works

Visit the Green Button program page for more information.