The offsheet method accepts a pre-calculated or independently determined annual energy consumption value. No flow-rate conversion is applied; the consumption figure is used directly as the annual energy use.

\begin{equation}\label{eq:steam-reduction-offsheet} E_{use} = C_{offsheet}\end{equation}

Symbols

\(E_{use}\)	Annual energy use \([\unit{ \kJ\per\year}]\)
\(C_{offsheet}\)	Direct total annual energy consumption \([\unit{ \kJ\per\year}]\)