A coalition of eight UK battery operators, known as CDAES, is pushing back against proposals to expand state support for long-duration energy storage (LDES). According to ESS News and pv magazine, as cited by Global 100 RE UKRAINE, the group argues that an oversized initial round of a proposed 25-year cap-and-floor revenue guarantee could add £1.6 billion to consumer bills.
The cap-and-floor debate
A cap-and-floor mechanism gives LDES developers a minimum revenue floor while capping upside. Supporters say it reduces investment risk for capital-intensive projects that cannot rely on short-term market revenues. Critics question the cost to consumers and the scale of the initial round.
Why the coalition is concerned
CDAES represents battery operators who already participate in UK electricity markets. The coalition's warning focuses on the design of the scheme, not necessarily the need for LDES itself. It argues that an over-extended first round could commit billpayers to higher costs than necessary.
'An oversized initial round of a 25-year cap-and-floor guarantee could add £1.6 billion to consumer bills.' — CDAES, as reported
What comes next
The UK is one of the few markets designing a dedicated revenue support scheme for LDES. The outcome will be watched by developers of flow batteries, thermal storage and other long-duration technologies. The debate highlights a central tension: LDES needs stable revenue to scale, but policymakers must balance investor certainty with consumer cost control.
The article does not detail the final scheme design or the government's response. For now, the coalition's intervention signals that the consultation over LDES support is contested. The size and structure of the first round will be critical for project economics and for which technologies can proceed.
This article was assisted by AI analysis. Please refer to the original source for official information.