Re: @ledswinger
You have missed the point. CHP does not need to be more efficient that a heating boiler, it only needs to be more efficient than the alternative electrical generating/distribution system plus a separate heating system.
e.g. in separate systems:
1 unit in x 40% = .4 units out (elec)
1 unit in x 92% = .92 units out (heat)
in combined system
2 units in x say 30% = .6 units out (elec)
plus 2 units x 70% x say 80% = 1.12 unit out (heat)
More heat and elec.
Biting the hand that feeds IT
