Imagine a giant underwater battery that uses air and seawater instead of expensive chemicals. It stores extra wind energy by compressing air and water deep in the ocean, then releases it when the wind stops blowing. This keeps the power flowing steadily to the mainland without wasting clean energy.
Offshore wind energy is intermittent and often faces grid congestion, leading to wasted energy and lost revenue. Current long-duration storage solutions are not optimized for shallow to mid-depth offshore environments.
A hydro-pneumatic energy storage system including thermodynamic models, control algorithms for energy management, and a planned physical pilot plant.
If you are a wind farm developer dealing with wind intermittency and grid congestion — this project developed a hydro-pneumatic storage system that increases profitability by introducing flexibility to the energy supply.
If you are a grid operator dealing with market volatility and transmission capacity limits — this project developed a storage solution for shallow to mid-depth waters that reduces grid congestion and improves infrastructure resilience.
If you are a platform provider dealing with the need for compact, low-impact energy systems — this project developed a system suitable for fixed-bottom and floating applications in waters between 40-400m.
Based on available project data, specific pricing is not provided, but the system is described as less expensive and more compact than other offshore energy storage concepts.
The system is designed for large-scale integration into offshore renewables and is suitable for installation in shallow waters ranging from 40 to 400 meters.
Based on available project data, the project is currently in the qualification and pilot plant preparation phase; specific licensing terms are not mentioned.
The system is designed to be co-located within the footprint of the wind farm, utilizing the ocean as a natural heat sink and using pneumatic pre-charging to avoid reliance on hydrostatic pressure.
The project runs from 2025-01-01 to 2026-12-31, with key components from suppliers expected for delivery in Q1 2026.
The project is led by a single Dutch SME, FLASC BV, which maintains 100% industry representation. This lean structure suggests a fast-track approach to industrialization, focusing on direct commercial application rather than academic research, as evidenced by the lack of university or research institute partners.
Contact FLASC BV in the Netherlands for partnership opportunities regarding the 2026 pilot plant.
Contact us to explore integration of hydro-pneumatic storage into your offshore portfolio.
