Description
Bullfrog Power is a Canadian green energy retailer that, for a premium on top of a customer’s usual bill, makes sure the same amount of renewable electricity is put onto the grid on their behalf.
Customers keep their electricity from the local utility. Bullfrog uses the premium to buy and retire Green Electricity Certificates from wind, solar and low-impact hydro generators, one for each megawatt-hour the customer uses, so the customer can claim that green energy and its emissions savings. It offers the same for natural gas. An annual audit checks that as much green electricity and gas went onto the system as customers used, and that the certificates were retired.
The company was founded in Toronto in 2005 and belongs to Envest. In 2011 it was among Canada’s founding certified B Corporations. According to its 2025 factsheet, it has more than 10,000 residential and 1,500 business customers. Certificate-based green power is a debated model: critics, mostly in the UK, point out that certificates can be traded separately from the physical electricity, so they may not add new renewable capacity.
Strengths
- Anyone in the provinces it serves can sign up without changing utility or installing anything.
- An annual audit checks that the renewable electricity and gas customers paid for were actually put onto the system.
- The same model also covers natural gas, not only electricity.
Weaknesses
- It works with certificates, not by supplying power directly, a model critics say does not necessarily build new renewable plants.
- Customers pay a premium on top of their normal bill, without any change to the electricity reaching their home.
- Its customer numbers come from its own factsheet.
Who it is for
Households and businesses in Canada who cannot choose their electricity supplier and want to pay for renewable generation matching their usage.
Sources
- Bullfrog Power: product overview factsheet 2025 (checked November 2026)
- Wikipedia: Bullfrog Power
- Which?: Green energy tariff claims to be investigated