Ofgem, the energy regulator for Great Britain, has officially opened a public consultation regarding the implementation of a new commitment fee aimed at streamlining the national grid’s connection queue. The proposed measure is specifically designed to address the significant backlog of battery storage projects currently awaiting connection, many of which are suspected to be speculative or unviable. By introducing a financial barrier to entry, the regulator hopes to clear the path for projects that are genuinely ready for construction, thereby accelerating the country’s transition to a more flexible and decarbonized energy system.
This strategic move comes at a critical juncture for the British energy sector, which is currently grappling with a massive oversupply of projects competing for limited space on the electricity grid. At present, the reformed grid connection pipeline is under immense pressure, with more than 1,200 individual energy projects of various types currently navigating the application and development process. The sheer volume of these applications has created a significant administrative and technical bottleneck, preventing the timely deployment of essential infrastructure needed to meet the UK’s ambitious net-zero targets.
The situation within the battery storage sector is particularly acute. According to data released by Ofgem, the total battery capacity that is either already connected to the grid or currently sitting in the connection queue has reached a staggering 90GW. To put this figure into perspective, it represents roughly three times the projected national requirement for battery storage, which is estimated to be around 29GW by the year 2035. This massive discrepancy between the capacity in the pipeline and the actual systemic need has raised serious concerns about the efficiency of the current allocation process.
The regulator has expressed concern that the current queue is being artificially inflated by what are often referred to as "zombie projects"—developments that have secured a place in the queue but have little chance of reaching the construction phase. These projects often act as placeholders, effectively hoarding grid capacity and preventing more viable developments from moving forward. By introducing a commitment fee, Ofgem intends to force developers to prove their financial and operational readiness, encouraging those with unlikely or speculative projects to exit the queue voluntarily and sooner rather than later.
Eleanor Warburton, the Director for Energy System Design and Development at Ofgem, highlighted the urgency of the situation, noting the complications caused by the current surplus. She explained that having three times more battery capacity in the connections queue than the system is expected to require by 2035 creates a significant visibility problem for regulators and network operators. When the queue is cluttered with unviable projects, it becomes increasingly difficult for authorities to identify which developments are genuinely going to be built. This, in turn, makes it nearly impossible to accurately determine what specific network infrastructure is actually required to support the future energy mix.
