This month's challenge is to save energy by turning down your thermostat at home. Surely this will save energy. It doesn't seem like there can be any controversy here. So just how much energy can be saved?
The Energy Saving Trust says you can save around 10% on your heating bills by turning down your thermostat one degree.
The BBC agrees.
Friends of the Earth says turning down thermostat 1 degree saves £30 a year
Energywatch quotes the 1 degree = 10% saving
It's encouraging that they all agree. Still, none of these gives their sources. They could all be quoting the same source, which may not be reliable, so I will keep digging to find out who has researched this tip and what their findings were.
As I was digging I found an interesting snippet relating to our September challenge - to save energy by turning off devices on standby. If you remember we found that some people claim standby helps extend the life of electronic devices by protecting them from the power surge when they are turned on. I could find no evidence for this claim, and so I choose to switch off rather than standby. But the National Energy Foundation asks:
how many office PC screens are thrown away because they have broken down, and how many because they have become superseded by more modern technology?