Question to the Department for Business, Energy and Industrial Strategy:

To ask Her Majesty's Government what assessment, if any, they have made of the potential benefits of implementing a regulatory definition of electricity storage based upon the definition currently used for interconnector capacity.

Our 2016 call for evidence on a smart, flexible energy system sought views on how to define electricity storage in legislation and other regulation. A large number of respondents agreed that the definition developed by the industry group, the Electricity Storage Network, provided the best basis for this. Very few respondents suggested basing the regulatory definition on that used for interconnection. In the Smart Systems and Flexibility Plan, published in July 2017, the Government committed to define electricity storage in primary legislation using the Electricity Storage Network’s definition as a basis, when Parliamentary time allows.