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Energy: Net zero

Energy: Net zero | 28

GB battery storage: what’s on the horizon?

Ben Hall Head of New Business

Recent statistics show the GB battery storage market may have passed the 1GW milestone. Battery storage has been a significant growth area in GB which has coincided with a slow-down in renewables deployment. Assessing the exact capacity is very difficult in the absence of a central database, but based on planning data, including the Renewable Energy Planning Database (REPD) and National Grid data for the Capacity Market (CM) agreements, there is around 1GW of active batteries in GB.  Top Gear As we pass this milestone, the queue of projects behind these is significant. REPD data shows there is nearly 5GW of further projects in construction or awaiting development (see Figure 1). The total pipeline of projects (including all in planning) is nearly three times this (13GW). There have been several drivers for growth in batteries to date, including falling technology costs, providing frequency services, network charge avoidance, reduced costs of network reinforcement and support in balancing the system. There have also been cases of companies deploying batteries to learn from their operation for future developments and therefore not running them purely on a commercial basis. The business cases have evolved and adapted over time, mainly as a result of each market becoming quickly oversubscribed. The most pertinent examples of this have been in frequency response. The first grid-scale batteries in GB were deployed under the Enhanced Frequency Response (EFR) scheme for National Grid ESO with just over 200MW of projects under four-year contracts. The tender was run just once (in 2016) ...

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