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Co-located with offshore wind, HPES boosts its revenue 10–30%, reduces curtailment and enables grid flexibility
About
FLASC is a start-up working on non-battery energy storage for offshore applications. It is tackling a fundamental problem: the mismatch between renewable energy supply and consumer demand. Renewable energy is not stable and predictable and neither is the demand. Integrating storage with renewables can be a solution to this problem.
It is the first solution tailored for co-location with offshore wind. It is based on an advanced hydro-pneumatic liquid piston concept where electricity is stored by pumping a liquid to compress a volume of air. Using a patented pre-charging concept, and the marine environment itself as a natural heatsink, the compression process is optimised to achieve very high efficiencies, resulting in an offshore solution that is cost-competitive with land-based storage.
With a co-located FLASC system, offshore wind farms can become an active provider of grid flexibility when using energy storage. Recent studies show that this can add 10-30% more value to the wind farm output by improving the way it is monetised.
The FLASC technology is covered by international patents, received a Statement of Feasibility from DNV and selected for funding under the prestigious EIC Accelerator and private investors.
Key Benefits
FLASC enables offshore wind developers to unlock 10–30% more revenue by reducing curtailment, easing grid congestion, and accessing new market services. Our non-battery storage is tailored for the marine environment, with storage durations from 4 to 100 hours, a long lifetime, and low maintenance. The technology is scalable, independent of critical minerals, and cost-competitive with onshore solutions, delivering reliable flexibility and stronger project economics. We have a long-standing collaboration with Subsea7, eliminating offshore installation risks.
Applications
FLASC targets offshore wind developers and operators seeking scalable, long-duration storage solutions to boost project revenues, improve grid flexibility, and strengthen business cases.