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Energy storage

Enabling the delivery of long and short duration storage to ensure a stable and resilient high-renewables system

About energy storage and flexibility

Renewable energy is low cost and abundant, but the wind doesn’t always blow. Building a wide range of energy storage technologies – from batteries and green hydrogen to pumped hydro – will be necessary to help manage the peaks and troughs of renewable generation, capturing power when it’s abundant and releasing it when needed.


To provide the system flexibility the nation needs, many things need to work together seamlessly. These include increased renewable generation, storage, interconnection and more flexible demand. To harness the benefits of a flexible technologies policy, regulation and markets must provide a stable and transparent platform for developers to invest and use renewables, storage and flexibility in an efficient way.

Our work in energy storage and flexibility


Our work in energy storage and flexibility calls on Government to introduce reforms to support long-duration electricity storage technologies and design. We’re identifying and working through challenges the industry faces when trying to combine renewable, storage and flexible technologies in one place. We’re also asking for appropriate market reforms – including a cap and floor mechanism and reforms to the Capacity Market - to catalyse investment.

  • News
  • Publications
  • Working groups

Energy storage related working groups


RenewableUK runs the following working groups with its members.


System Flexibility and Services group


A high-renewables system will require increasing levels of system services, such as frequency response and inertia, as well as both long and short duration storage to ensure system stability and manage variability in generation. This working group will address barriers to market for ancillary services, and barriers to deployment of co-located storage


Networks and Charging group 


Grid is widely recognised as the critical barrier to the delivery of a net zero power system. This working group will sit at the heart of our efforts to accelerate the delivery of our network and ensure that renewable generation and storage can connect quickly and efficiently through reforming network codes and charging