Gigawatts to BTU/hour Converter
Enter a value to instantly convert between power units.
1 Gigawatt = 3412141633.128 BTU/hour
Key Formulas
Kilowatt → Horsepower (mech)
hp = kW × 1.34102Horsepower (mech) → Kilowatt
kW = hp × 0.7457Watt → Kilowatt
kW = W × 0.001Kilowatt → Watt
W = kW × 1000Formula
BTU/h = GW × 3,412,140,000Power plant engineers calculate heat rates in BTU/kWh, but plant capacity is expressed in GW. Converting GW to BTU/h is needed when calculating total fuel consumption, flue gas volumes, or heat rejection from a large plant or fleet of plants. A 3 GW coal plant consuming fuel at its rated thermal input processes about 10.2 billion BTU/h — a figure that drives boiler sizing, stack sizing, and environmental impact assessments.
Source: NIST SP 811, Table B.8
Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
1 GW of electrical output requires about 3.41 billion BTU/h of fuel input at 30% thermal efficiency — a large coal or gas plant.
1 GW = 3412140000 BTU/h
A 0.5 GW (500 MW) combined-cycle plant = 1.71 billion BTU/h thermal input — more efficient at about 55% efficiency, using 3.1 billion BTU/h.
0.5 GW = 1706070000 BTU/h
A 3 GW nuclear station = 10.24 billion BTU/h thermal output — illustrating why nuclear plants require massive cooling towers or water bodies.
3 GW = 10236420000 BTU/h
A 0.1 GW (100 MW) waste heat recovery system = 341 million BTU/h of available thermal energy — enough to heat thousands of homes.
0.1 GW = 341214000 BTU/h