Whitehorse historical residential heating costs at 85% and 95% efficiency for the past 10 years

This graph shows the historical fuel and electrical energy costs for residential customers in Whitehorse between 2010 and 2020. It assumes that oil appliance efficiency was 85 per cent, propane appliances efficiency was 95 per cent, pellet efficiency was 70 per cent and firewood efficiency was 60 per cent.