The equivalent electrical heat input is calculated as:

\begin{equation}\label{eq:energy-equivalency-electrical} P_{elec} = \frac{P_{fuel} \cdot \eta_{fuel}}{\eta_{elec}}\end{equation}

Symbols

\(P_{elec}\)	Equivalent electrical heat input \([\unit{ \kilo\watt}]\)
\(P_{fuel}\)	Fuel-fired heat input \([\unit{ \mega\btu\per\hour}]\)
\(\eta_{fuel}\)	Fuel-fired furnace efficiency \([\unit{ \percent}]\)
\(\eta_{elec}\)	Electrically heated furnace efficiency \([\unit{ \percent}]\)

Note

The result is converted from MMBtu/hr to kW using the factor 1 MMBtu/hr = 293.07107 kW.