Hunterston Liquid Air Storage Project by Highview Power: status and timeline

Milestones

Next · Final Ofgem approval (expected)

Ofgem eligibility confirmedSep 2025Complete.
Final Ofgem approval (expected)Target Q2 2026Not yet reached.

Upcoming

Q2 2026Final Ofgem approval (expected) (next)

Current obstacles

Regulatory and cap-and-floor approvalFinal Ofgem decision in Q2 2026 will determine if project meets cost-benefit criteria.

How it works

1 part

LAES technology

Same as Carrington, scaled to multi-GWh

Uses Highview's proven cryogenic air liquefaction and expansion for large-scale grid storage.

Spec sheet

Spec	Hunterston Liquid Air Storage Project
Planned storage capacity	3.2 GWh^R (reported)
Location	Hunterston, Ayrshire, Scotland^R (reported)

^R reported by the company

About Highview Power

The team behind Hunterston Liquid Air Storage Project

Highview Power

Liquid air energy storage, LAES, grid storage

Develops liquid air energy storage by cooling air to -196°C in cryogenic tanks for days-to-weeks storage. Operates Carrington (300 MWh) and develops GWh-scale projects.

Highview's LAES compresses and liquefies air at -196°C in insulated tanks for storage over days or weeks.
The 300 MWh Carrington plant near Manchester has a stability island operational by August 2026, with full LAES expected in 2027.
Hunterston and Killingholme projects (3.2 GWh each) advanced through Ofgem's cap-and-floor scheme, eligible for final award summer 2026.

highviewpower.com (opens highviewpower.com)Company profile →

Founded: 200521 yrs
Headquarters: United Kingdom
Status: Private
Valuation: private
Raised: $351M1 round
Last round: Growth funding · $351MJun 2024
Works in: EnergyGrid storage
Coverage: 3 programs · 2 updateslatest 1 Sep 2025checked 10 Oct
Investors: UKIB (UK Infrastructure Bank) (opens orrick.com)Centrica (opens orrick.com)
People: Richard ButlandCEO