Introduction: Networks are designed to operate with maximum demand with no contribution from Distributed Generation (DG) as well as minimum demand with maximum contribution from DG. Distribution Scale Storage is still a developing area and isn’t currently a conventional network reinforcement technique due to its high capex, opex costs and asset life. Through this project Western Power Distribution will be demonstrating an innovative Pumped Heat Energy Storage, the benefits of storage to the DNO and commercial models.

Objectives: Western Power Distribution will demonstrate an innovative 1.4MW Pumped Heat Energy Storage device that is being developed by Isentropic Ltd using funds from the Energy Technologies Institute.

Isentropic are developing a 120kW prototype before developing a 1.4MW energy storage device capable of maintaining a four hour maximum output. Western Power Distribution are partnering with Isentropic to demonstrate the 1.4MW device on our network as we believe large scale storage could deliver significant benefits to distribution networks.