Convert fuel prices in $/MMBtu, $/GJ, or $/therm to electricity prices in $/kWh, $/MWh, or c/kWh using efficiency or heat rate inputs.

Blank efficiency uses 100%: a fuel-energy price conversion.

Fuel-only conversion. Match fuel-price and efficiency/heat-rate heating-value bases. Btu means IT; therm here means 100,000 Btu. Other costs are excluded.

Optional settings

Common Mistakes Quick tips
  • Selecting the wrong solve mode; enter the known price, then select Calculate.
  • Mixing units: $/kWh vs $/MWh (ร—1000) and $/kWh vs c/kWh (ร—100).
  • Ignoring efficiency when comparing delivered electricity from fuelโ€”electric output price increases by 1/ฮท.
  • Mixing HHV and LHV heating-value bases. The unit conversion uses the IT Btu; fuel price and efficiency or heat rate must use the same heating-value basis.
  • Including delivery, demand, or taxes in one price but not the other; keep inputs on a comparable basis.
When to Use This Calculator
  • Comparing natural gas prices with electricity tariffs on a common $/kWh basis.
  • Estimating the fuel-only component of electricity generation cost from efficiency or heat rate; capital, operation, delivery, and other costs are excluded.
  • Translating utility quotes in $/MMBtu, $/GJ, or $/therm to $/kWh or $/MWh.
Input Definitions
  • Fuel Price โ€” per MMBtu, GJ, or therm. 1 MMBtu โ‰ˆ 293.07107 kWh; 1 GJ โ‰ˆ 277.77778 kWh; 1 therm (100,000 IT Btu) โ‰ˆ 29.307107 kWh.
  • Electricity Price โ€” per kWh, MWh (1000 kWh), or c/kWh (cents per kWh).
  • Efficiency โ€” enter a percentage greater than 0 and no greater than 100; ฮท in the formula is that percentage divided by 100. Leave blank for 100% (fuel-energy basis).

Related Calculators

$/MMBtu to $/kWh Formula

The following formulas convert fuel prices in $/MMBtu (or other fuel units) to electricity prices in $/kWh and back; if efficiency is not provided, use ฮท = 1.

(\) / (kWh) = (\) / (MMBtu) ร— (1) / (293.07107) ร— (1) / (eta)
  • Energy conversions: 1 MMBtu โ‰ˆ 293.07107 kWh; 1 GJ โ‰ˆ 277.77778 kWh; 1 therm (100,000 IT Btu) โ‰ˆ 29.307107 kWh.
  • Price unit conversions: $/MWh = $/kWh ร— 1000; c/kWh = $/kWh ร— 100.

How do you convert $/MMBtu to $/kWh? Divide the $/MMBtu price by 293.07107 to get $/kWh on a fuel-energy basis, then divide by efficiency (ฮท) to account for conversion losses.

How do you convert $/kWh to $/MMBtu? Multiply the $/kWh price by 293.07107 and by efficiency (ฮท) to get the equivalent $/MMBtu fuel price.

$/MMBtu to $/kWh Conversion Table

$/MMBtu to $/kWh (100% efficiency)
$/MMBtu $/kWh
10.003412
20.006824
30.010236
40.013649
50.017061
60.020473
80.027297
100.034121
120.040946
150.051182
200.068243
250.085304
300.102364
* Uses 1 MMBtu โ‰ˆ 293.07107 kWh; assumes 100% conversion efficiency (ฮท = 1).

Example Problem

Convert $10 per MMBtu to $/kWh at 50% efficiency.

Use the formula: $/kWh = ($/MMBtu รท 293.07107) รท ฮท.

$/kWh = (10 รท 293.07107) รท 0.50 โ‰ˆ 0.034121 รท 0.50 = 0.068243 $/kWh