On 09/01/2019 09:55, Andy Burns wrote:

But then, their understanding of power vs energy is summed up by "uses
360 watts an hour"

The figures assume that the panels generate enough hot water for the
average family 365 days a year without any need for a top up from any
other source.

Reference their "unit" figures why would an electric boiler be 12 pence
per kWh and an electric immersion heater be 30 pence per kWh?

Quote
thermodynamic water heating systems may cost over 10 times less to
operate than other common types, such as electric immersion heaters
/Quote

It's only 10x because they have used the wrong figures and so their
quoted break even point of 5 years is some what bogus.

As for boiler replacement, wouldn't it still be needed for central
heating and if so the ability to also provide hot water comes for free
(or just for the cost of the fuel).

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