Oregon Fuel Cost Comparison Calculator

Oregon Fuel Cost Comparison Calculator

Compare annual heating costs for natural gas, electric resistance, heating oil, and heat pump systems using Oregon utility rates.

Heating Load

Annual Heating Need (MMBtu/year) MMBtu/yr

Oregon Utility Rates (pre-filled with 2024 averages)

Natural Gas Rate ($/therm) $/therm

Electricity Rate ($/kWh) $/kWh

Heating Oil Rate ($/gallon) $/gallon

System Efficiencies

Gas Furnace Efficiency (AFUE %) %

Electric Resistance Efficiency (%) %

Oil Furnace Efficiency (AFUE %) %

Heat Pump COP (Heating) COP

Formulas Used

Natural Gas: Cost = (MMBtu ÷ AFUE) ÷ 0.1 × $/therm | (1 therm = 0.1 MMBtu)
Electric Resistance: Cost = (MMBtu ÷ Eff) × 293.07 kWh/MMBtu × $/kWh
Heating Oil: Cost = (MMBtu ÷ AFUE) ÷ 0.1385 MMBtu/gal × $/gallon
Heat Pump: Cost = (MMBtu × 293.07) ÷ COP × $/kWh | COP replaces efficiency
CO₂ — Gas: (MMBtu ÷ AFUE) × 117 lbs/MMBtu (EPA)
CO₂ — Oil: (MMBtu ÷ AFUE) × 163 lbs/MMBtu (EPA)
CO₂ — Electric/HP: kWh × 0.524 lbs/kWh (Oregon eGRID 2022)