0.07X24X30=50kWh per month.

Say 5p per unit - costs £2.50

I think you'll find electricity in the UK now costs more like

**12 pence per kWh unit**...

So for the above example (70Watts 24/7) costs £6 per month.

(my latest bill is 13.55p for the first 210 units/qtr, 9.3p for the remainder, then you need to add 5% VAT on top of that)

If you're trying to get your electricity bill down, consider:

**fridge and freezer** (around 200kWh/yr (£24/yr) for a big fridge, 500kWh/yr (£60/yr) for a big freezer)

make sure the fridge doors shut properly, and the freezer isn't in desperate need of defrosting (both will increase the power consumption)

**Any kind of electric heating appliance** - electric fires, and cookers use a lot of power

**Exterior floodlights** typically 300-500W - will soon add up if used much.

**TV/video/stb on standby** could easily add up to 30W or more, so 24/7 would cost £32/yr

There's a pattern - at today's prices, an appliance running 24/7 will cost its (average) Wattage in pounds, annually. i.e. An x-Watt appliance will cost £x per year.