Field Wins Scottish Consent for 200 MW Caithness Battery as Ofgem's LDES Shortlist Firms Up
The Rigifa project pushes Field's provisionally supported long-duration pipeline above 1.6 GW, testing whether Britain's cap-and-floor subsidy can pull storage past the pilot stage.
Scottish ministers granted planning consent on Friday (2026-07-10) for a 200 MW battery energy storage scheme in Caithness developed by Field, a project already shortlisted by Ofgem for financial support under its long-duration energy storage cap-and-floor mechanism.5
The consent matters because it moves one of Britain's most contested infrastructure classes from regulatory promise toward steel in the ground. The Rigifa site, about a mile southeast of Mey, will hold up to 4,800 battery units across roughly 10 hectares, with a storage capacity of 3,600 MWh against its 200 MW rating.5 That duration ratio is the point. Ordinary grid batteries discharge in one to two hours; Rigifa is being built to run far longer, which is what the LDES scheme is designed to reward.5
Ofgem narrowed its cap-and-floor list from 77 projects to 16 on 26 June (2026-06-26), a minded-to-decision that included three pumped-storage hydro schemes and one compressed-air project alongside the battery entrants.4 Getting through that gate, and now through Scottish planning, gives Field two of the harder consents in the same window.5
The company said the latest deals took its total debt and equity raised for European flexible infrastructure above £500 million.5 Confirmation of the two projects adds 239 MW to its construction programme.5 Across four schemes in Scotland and one in East England, Field now holds a combined 1.6 GW and more than 26 GWh of provisionally supported LDES capacity.5
The Scottish portfolio is where the scale sits. Alongside Rigifa, Field is developing the 400 MW/6,400 MWh Netherton BESS, the 400 MW/7,200 MWh New Deer BESS, and the 200 MW/3,300 MWh Fyrish BESS.5 Those durations, six to eighteen hours, are an order of magnitude beyond the merchant batteries that dominate the current fleet.5
Why build them in Caithness, at the far north of the grid? Because Scotland is where surplus wind gets stranded when transmission cannot carry it south, and long-duration storage is one of the few tools that can soak up that spilled generation rather than paying to curtail it. The cap-and-floor mechanism exists precisely because merchant revenues alone have not justified the multi-hour duration these sites offer.5
That revenue question is not settled. British battery revenues more than doubled between February and March, consultancy Aurora Energy Research found, driven by the price shock from the Iran war.3 Earnings that swing with a geopolitical event are exactly the kind Ofgem's floor is meant to smooth, and the reason developers want a guaranteed downside before committing to eighteen-hour assets that may sit idle for months.3
The system value showed up plainly in last summer's blackout. NGESO, in its final report published in mid-May (week of 2026-05-18) into the event that cut power to some 1.1 million customers, recorded that around 475 MW of operational battery storage was used to help restore grid frequency within four minutes.1 NGESO has since questioned whether more reserve is needed, with the sector putting the added annual cost of procuring it at between £50 million and £250 million, redistributed to consumers.1
The supply chain is the constraint that could still slip these timelines. High battery pack prices, shipping bottlenecks and other constraints are dampening near-term deployment even as demand stays strong, panellists told a BloombergNEF summit.2 A 3,600 MWh site needs an enormous cell order, and Field's 26 GWh pipeline competes for the same modules as everyone else's.2
For traders, the near-term read is narrow. None of this shifts UK power or ICE UK NBP gas day-ahead, last quoted at €44.82 (2026-07-11), inside days.5 The signal is structural: subsidy-backed long-duration storage is now consenting at gigawatt scale in the constrained north, and if it delivers it changes the economics of Scottish wind curtailment and the shape of within-day spreads over the back half of the decade.5
The unresolved risk is delivery. Provisional support, planning consent and raised capital are three of the gates; final cap-and-floor awards, cell procurement and grid connection are the ones that have stranded storage pipelines before. Watch whether Ofgem converts its minded-to list into firm awards, and whether Field's £500 million of committed funding survives contact with battery pack pricing.5,2