Water use:
Starter 1 gallon
Wort 7
cooling 15
boiler clean 2
fermenter sanitise and rinse 8
fermenter clean 2
secondary sanitise and rinse 8
secondary clean 2
keg sanitise and rinse 6
keg clean 3
=54 gall = .245 M3 @ 220p.
Water cost = 54p
Electricity 7 kw/h @ 8p
Electricity cost = 56p
So less than 3p per pint

And my AG brews cost about 20 - 25 p / pint
