FAQs

Haldane Energy is targeting a final investment decision (FID) for its first H₂-LDES project by early 2030s, with commercial operation (COD) expected by mid 2030s. This timeline reflects the size and complexity of the infrastructure and the regulatory steps involved.

All seven projects have secured connection agreements with the National Energy System Operator (NESO). We’re actively contributing to system-wide discussions on future energy system architecture and storage integration as part of ongoing consultations.

While hydrogen-based energy storage is gaining traction globally, Haldane Energy is among the first to develop a large-scale, closed-loop H₂-LDES system using UK-based salt caverns and hydrogen turbines. It is setting a commercial benchmark that others are expected to follow.   

Clean Power 2030 will create a high-renewables system, but that system will still need long-duration, dispatchable storage to remain stable and secure for decades to come. H₂-LDES is the technology that can provide that flexibility. This means policy for Clean Power 2030 must look beyond its delivery date; ensuring the storage the system will depend on in the 2030s and beyond is planned for now.

Haldane Energy is working with a range of trusted partners to ensure each project is technically robust and ready to deliver.  

• Leading engineering firm AtkinsRealis has identified the most suitable geological formations for salt strata development. Their early-stage engineering has helped define the storage system design, and they continue to support subsurface modelling, performance analysis and key front-end loading (FEL) activities, including Pre-FEED.
• Genesis led the Pre-FEED study for the portfolio, validating the technical feasibility of the closed-loop H₂-LDES system. Their work demonstrated that each project can operate safely, reliably, and effectively over its full lifespan – while integrating smoothly with the wider energy system.
• Arup is our EIA and Consenting Strategy partner, responsible for delivering the environmental impact assessment and guiding the consenting process across the portfolio. Their extensive experience in major infrastructure and complex consents ensures strong regulatory compliance and an efficient consenting process.

Haldane Energy is actively engaging with regulators, landowners and stakeholders early in the process to de-risk timelines. While permitting and planning are thorough, they are factored into the development schedule to prevent delays. By using proven technologies and experienced delivery partners, Haldane aims to avoid common bottlenecks.