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

\begin{equation}\label{eq:natural-gas-reduction-other} Q_{total} = C_{other}\end{equation}

Symbols

\(Q_{total}\)	Annual natural gas energy use \([\unit{ \MMBtu\per\year}]\)
\(C_{other}\)	Direct annual natural gas consumption \([\unit{ \MMBtu\per\year}]\)