Heat rate and electricity-energy conversion (HR) calculator

Heat rate compares fuel energy with generated electricity; net CHP allocation must be stated.

Units

\mathrm{HR} = \frac{E_{\text{fuel allocated}}}{E_{\text{electric}}}

Calculator

Enter the values you know and leave one box empty. Calculate finds the empty one, the result or any input.

Given

\mathrm{HR} = \frac{760{,}000{,}000}{80{,}000} = 9{,}500

Symbol	Meaning	Unit
$\mathrm{HR}$	fuel heat allocated per unit of electric output	Btu/kWh
$E_{\text{fuel allocated}}$	fuel energy on the selected gross/net allocation basis	Btu
$E_{\text{electric}}$	generated electricity	kWh

Symbol	Meaning	Unit
$\mathrm{HR}$	fuel heat allocated per unit of electric output	kJ/kWh
$E_{\text{fuel allocated}}$	fuel energy on the selected gross/net allocation basis	kJ
$E_{\text{electric}}$	generated electricity	kWh

Results are estimates for study and screening. Check the inputs, units and assumptions before you use them for design, billing or contract decisions.