Bill Holmes goal has been to reduce dependence on fossil fuels and finite resources. But he can’t deny the laws of physics and you can’t be casual about assumptions, and renewable energy advocates have done both.
If you want to save energy, you look at everything connected to the electric meter, the gas and water meters. You should also look at your lights as energy efficient, LED lighting can save your facility time, money and energy.
Maybe one of the reasons your competition sometimes beats your price is that they’re doing a better job of holding down energy costs, for example, by participating in an electric power demand response program.