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Never mind the EVCPs, what about the boilers.

Chris Pearson
Apparently gas boilers should be banned from 2025.


At the moment, well under 10% of our energy is supplied by electricity: it is mostly gas. Use of an electric vehicle could double our leccy consumption, which would be bad enough; but (a) trebling the cost of our energy would be painful, and (b) how would the network and generation cope?
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    whjohnson:

    The incongruity  knows no bounds - a ground source heat pump - according to a rich neighbour of mine who markets such systems exclusively in the USA - states that for every quid spend on electric juice gets you four quid back. To me, there is never ever something for nothing, yet the supposedly smart degree-qualified chattering classes are going mad for these things.


    Under the right conditions, a heat pump can certainly give 4kWh of heat out for every 1kWh you put in.  They work on the same principle as a fridge or air conditioner, pumping heat from one place to another.


    Unfortunately, the efficiency drops as the source side gets colder, so you may only get a COP of 3 (3kWh out for 1kWh in), or 2, or less, in the depths of winter.


    But at current gas and electricity prices, it still works out more expensive than gas central heating.


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  • 0
    whjohnson:

    The incongruity  knows no bounds - a ground source heat pump - according to a rich neighbour of mine who markets such systems exclusively in the USA - states that for every quid spend on electric juice gets you four quid back. To me, there is never ever something for nothing, yet the supposedly smart degree-qualified chattering classes are going mad for these things.


    Under the right conditions, a heat pump can certainly give 4kWh of heat out for every 1kWh you put in.  They work on the same principle as a fridge or air conditioner, pumping heat from one place to another.


    Unfortunately, the efficiency drops as the source side gets colder, so you may only get a COP of 3 (3kWh out for 1kWh in), or 2, or less, in the depths of winter.


    But at current gas and electricity prices, it still works out more expensive than gas central heating.


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