Skip to Content
Lennox gas-fired generating station in summer.

Gas power

Reliable operation of Ontario’s electricity system depends on continually balancing supply and demand in real time. Gas generation plays a critical role in maintaining reliability because it’s flexible and can be dispatched easily when it’s needed most.

Explore how gas-fired power works and the important role it plays in Ontario Power Generation’s energy mix.

There was 0.7 terawatt hours of power produced in 2018

Gas fleet

2,935 Megawatts

In-service generating capacity (Sept 30, 2019)

1 Station

Dual-fuelled by oil and natural gas

1 Station

Fuelled by natural gas and operated by a wholly-owned subsidiary of OPG

1 Station

Fuelled by natural gas and co-owned but not operated by OPG

Fuelling system reliability

Closing our coal stations remains one of the world’s largest actions to combat climate change. In the absence of coal, gas-fired power generation stepped up to play the ever-important role of ensuring system reliability with its own unique set of benefits.

  • Flexibility — These stations can remain unfueled on standby for long periods of time yet be ready to quickly spring into action to help meet any spikes in Ontario’s energy demand.
  • Enabling renewables — Gas also helps enable other important renewable energy sources like wind and solar which are intermittent sources that require backup.
  • Regulating costs — Given its relatively low operating and fuel costs, gas power also helps keep electricity costs down for customers.

Our gas-fired generation