Published: 24 Feb 2021, 13:54 By: Edith Hancock EelPower secured an optimisation deal with EDF this month to oversee revenue streams for three battery energy storage systems in the UK totalling 80MW. Image: EelPower Although there is growing interest within the energy storage industry around the National Grid’s Dynamic Containment (DC) system, operators who tap into it must be careful not to neglect other revenue streams, a panel of industry experts heard this week. Ancillary services have become one of the biggest opportunities for battery storage in recent months, particularly in the UK, where the National Grid ESO rolled out its new Dynamic Containment service last October. DC has one of the highest returns of any operator services with a cap of £17 (US$23.96) /MW/h, but it is still largely undersubscribed as asset optimisers and owners struggle with the requirements.