The UK energy regulator Ofgem is consulting on a new financial commitment fee for battery energy storage systems in the national grid connection queue. The proposed mechanism aims to reduce significant oversupply by requiring developers to pay security to maintain their position, ensuring the queue reflects viable projects rather than mere placeholders.
Queue Overcapacity
Great Britain currently faces a massive oversupply of battery projects in its reformed grid connection queue. Approximately 83 gigawatts of battery capacity have secured priority status, adding to the 7 gigawatts already operational. This total is roughly three times the projected requirement needed to meet government deployment targets for 2035.
Proposed Financial Commitment
Ofgem is minded to approve the Oversubscribed Technologies Commitment Fee through a code modification known as CMP470. This mechanism would require battery operators to provide financial security linked to their proposed capacity. The initial security requirement would start at £3,000 per megawatt and could rise incrementally.
If the queue remains heavily oversubscribed, the financial liability could increase to a maximum of £25,000 per megawatt. Developers could satisfy this requirement using letters of credit, guarantees, or cash collateral, rather than making an immediate upfront cash payment directly to the energy regulator in Great Britain.
Industry Impact And Exemptions
The new fee structure is expected to force developers to rank their projects much earlier in the development process. While well-capitalised developers might manage the costs, early-stage portfolios could face significant financial pressure. The initial fee alone could create approximately £230 million in additional security requirements across the queue.
The proposal includes a targeted exemption for certain co-located battery projects that do not increase transmission capacity. Industry stakeholders have until 1 October to respond to the consultation, with a final regulatory decision expected later in the year to implement the changes by July 2027 across the network.
Key Takeaways
Ofgem is consulting on a new financial commitment fee to reduce oversupply in the battery grid connection queue.
The proposed security requirement would start at £3,000 per megawatt and could rise to £25,000 per megawatt.
Great Britain currently has approximately 83 gigawatts of battery capacity in the queue, which is three times the projected 2035 requirement.
The new fee mechanism is proposed through code modification CMP470 and could come into force in July 2027.
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