Don’t leave your power-tool chargers switched on once the tool or battery is charged. Even if you remove the tool or battery, the charger will keep charging unless you unplug it or turn it off at the wall.
The same goes for mobile phone, electric toothbrush and other gadget chargers.
Go for cordless power tools with lithium-ion batteries because they lose less charge and store more power than other kinds of rechargeable battery.
They also weigh less than conventional batteries and have shorter charge times.
When not in use, store lithium-ion power tools in a cool, dark and dry place so the batteries retain charge – in these conditions, they’ll stay charged for long periods.
Invest in a wireless energy monitor. They cost from around £20 and show you how much energy you’re using and how much it’s costing you.
Use the monitor to see how changing your behaviour saves you energy and money.
Use a little paint or correction fluid on unmarked radiator valves to show which way you turn them for open or closed. This will help you to keep each room at the right temperature, without wasting energy. In general, your bedrooms should be cooler than your living areas.
Better still, fit – or get a plumber to fit – thermostatic radiator valves (TRVs) with numbers on.
These work by sensing the temperature of the air and adjusting their output accordingly.
You use your electronic wall thermostat to set the maximum temperature for your home, and the valves enable you to vary that from room to room.
However, don’t fit a TRV in the room the thermostat is in – usually the hall.
If your lights are on timers so your house or flat is light when you get home from work, adjust them to reflect the fact that it now gets dark later, and keep adjusting them until the clocks go forward, to save energy.