Martin Brown wrote:

Knowing your base load is a useful contribution to saving power on an
annual basis since every 10W wasted continuously amounts to around 1kWh
every four days or 90kWh per year (approx £12 pa at current prices).

My 'easy to remember' figure is that a 1W load costs about £1/year if
left on continuously. OK, probably a bit more now (as you say above)
but it's a pretty good 'ball park' figure to work out whether a new
lower power device of some sort is going to pay for itself.

--
Chris Green
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