If there is a grid outage cutting electricity supply to the WSHPs, there will be gas boilers in place as a back-up. These are the most cost-effective way of providing a backup at this point in time but our intention is to move away from the use of gas as early as economically possible. Additionally the EEN will have huge stores of hot water (thermal stores) which can also supply heat to customers. This means there are three methods of supplying heat to customers, and we’re investigating other opportunities for heat generation.

We guarantee that we will be able to supply heat to our customers for over 99% of the year.