Quote:
Originally Posted by Seeker
Electric boilers...how quaint. A typical house in the UK requires 12kW/h of heat per year. A heat pump efficiency is measured by CoP (Coefficient of Performance) so a pump with a CoP of 3 would produce 3kW of heat for every 1kW of electricity used and a typical house would therefore require 4kW per year. This link:
https://www.viessmann.co.uk/heating-...of-electricity
shows that it works out cheaper than gas at current(!) prices.
Re-purposing old electric car batteries is not a government fudge:
https://energypost.eu/grid-scale-sol...-ev-batteries/
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Heat pumps are expensive to install, whether air or ground source, the original cost has to be factored back into the running cost. The real problems is that more and more demand being placed on grid, and government would rather spend money on projects like HS2 than ensuring our future power supply by building dependable nuclear power stations. The heat pump would potentially need 35,000 KWh per year ( 4 KW for 24 x365 days ).
The government was not talking about re-purposing BEV batteries, they were talking about cars being charged on peoples driveways having power 'siphoned off' ( fed back into the grid ) during peak times... using old car batteries is a different matter, but a large battery farm would be a potential bomb, due to the fact that lithium is very flammable and toxic ( look at the full gear, including breathing masks that firemen have to wear when dealing with a BEV crash and fire ).