The idea
There are many washing machines and dishwashers on sale that only have a clod water connection. These devices have no option but to use electricity to produce hot water. The electricity consumed may have been generated from 4 units of gas, making a considerable contribution to carbon emissions.
If these devices had hot water connections they could have generated the same heat from only 1 unit of gas or benefited from renewable heat.
Gas is also 1/4 the price of electricity unit for unit reducing the end users costs.
Why is it important?
To reduce carbon emissions
To reduce pollution
To reduce our reliance on imported carbon fuels
To reduce end user costs