A Current Cost ENVI was recently installed in the legendary Melbourne restaurant, The Graham (www.thegraham.com.au), a few days ago.
It was discovered that between midnight and nine AM, over 100kWh had been used.
A substantial proportion (approximately half) can be attributed to fridges, cold rooms, security systems and an oven that is left on overnight to slow roast various dishes.
However, the rest of it came from the coffee machine. Over the course of the night is used 60kWh just to keep the water hot. If turned off over night it only takes ten minutes to heat up again in the morning.
Total saving per year? Approximately $3500.
Total saving over the lifetime of the coffee machine (assuming 25 year life)?
$87000.... and that's assuming that electricity prices are going to stay the same!