Fuel energy content — the $/MMBTU denominators
Delivered cost per MMBTU divides the price you pay by the energy content and the equipment efficiency. These energy contents are stable physical constants; the price is always yours. Use the $/MMBTU by fuel tool to rank them.
| Fuel | Unit | Energy content |
|---|---|---|
| Electricity | 1 kWh | 3,412 BTU |
| Natural gas | 1 therm | 100,000 BTU |
| Natural gas | 1 cu ft | 1,037 BTU |
| Propane | 1 gallon | 91,500 BTU |
| Heating oil (#2) | 1 gallon | 138,500 BTU |
Delivered $/MMBTU = your price ÷ (energy content × efficiency) × 1,000,000. Prices are always yours to enter.