[Kristen]

I work on the basis of multiplying the watts by the price of a unit x 10 for the year (and then knocking off 10% to be closer [12.3% if you are good at maths!]).

So if Leccy is £0.15 a unit then 1 watt costs £1.50-ish a year (actually £1.31)

e.g. a 500W device is 500 * 1.5 = £750, less 10% = £675 [actual figure is £650] a year

... a 500 Watt home cinema system that you never put on standby ... or 5 x 100W bulbs left on all the time, or 10 left on half the time ...

I'll get my green coat ...

[Paul Plots]

As my income, in the not too distant future, is about to be reduced by around 60% I think I'll just hang on a bit until the conservatory heats up in the spring sunshine...

Nice bit of maths though