Long-duration storage for a reliable UK grid
A way to store surplus renewable energy as hydrogen and deliver power back to the grid when it’s needed most.
H₂-LDES is one of the many storage solutions needed to support the energy system.
Assets will charge throughout the year and reach peak capacity ahead of winter, ensuring power when demand is highest.
Supports onshore wind, offshore wind, and solar by reducing economic curtailment and balances the system through seasonal peaks.
Salt caverns can hold vast amounts of energy at low cost, H₂-LDES offers one of the most affordable forms of long-duration storage. As duration increases, the cost per kWh falls significantly, making it the cheapest option for storage lasting more than 100 hours.
H₂-LDES separates the cost of storing electricity from the cost of delivering it. Storage capacity is expanded through additional salt caverns, not by oversizing turbines or electrolysers. This design advantage enables long-duration storage to scale at significantly lower cost than other technologies.
the point at which H₂-LDES becomes the cheapest long-duration storage option.
At 19 days of duration, H₂-LDES offers the longest duration electricity storage capability available at scale.
Longer than grid-scale batteries.
Longer than the UK’s largest pumped hydro assets.
The future of UK energy starts here
