Our engineers, clients, partners, sponsors and collaborators share one vision

delivering value by
storing energy at sea.

FLASC B.V is the leading solution for large-scale offshore energy storage, with 5 key application areas where we can deliver value.

Offshore Wind + Storage

FLASC stores energy “behind-the-meter” within the offshore footprint. This approach maximises asset utilisation by reducing energy lost to curtailment and provides lucrative short-term balancing reserves without taking up additional onshore space.

Offshore co-location is key to addressing spatial mismatch: clean power generated far offshore needs to reach onshore consumers. FLASC is the leading utility-scale solution suitable for buffering energy in the offshore environment, as a complement to other grid assets further onshore. Its high energy density makes it suitable for both bottom-fixed and floating wind farms.

Joint tenders combining offshore wind and flexibility are already being requested to optimise grid integration and reduce congestion. FLASC can therefore strengthen new wind farm bids by providing flexibility of supply from day one.

Green Hydrogen Production

FLASC safely absorbs intermittency and improves electrolyser utilisation while reducing on/off cycling of the plant.

Significant quantities of green hydrogen will be produced from offshore wind, a co-located FLASC system can absorb short-term intermittency and deliver stable power to the electrolyser, resulting in a reduction in the overall unit cost of hydrogen produced.

Pressurised seawater from the FLASC system could also support desalination of seawater to be used as H2 feedstock, can also be used to store a buffer of desalinated water to be supplied directly to the electrolyser.

Small-Islands and Sensitive Regions

FLASC frees up precious land and provides flexibility as a sustainable and socially-positive solution.

Installing a FLASC system to address islanded or congested grids frees up precious land and provides flexibility as a sustainable and socially positive solution. Co-locating storage reduces overall grid integration costs and eliminates the need for expensive land uptake while supporting a range of marine renewables, including solar PV, wind and wave energy.

Pressurised seawater from the FLASC system could also support reverse osmosis desalination of seawater, typically a major energy consumer in small islands.

Decarbonisation of Heavy Industry

FLASC drives deeper decarbonisation of energy-intensive industries (e.g. oil & gas) by safely delivering reliable clean power.

A FLASC system deployed alongside local offshore wind generation doubles the decarbonisation effect of the local wind resource. The energy storage system provides a buffer to compensate between wind generation and local consumption, allowing the gas turbines to be shut down instead of operating in spinning reserve. If the wind drops for longer periods, the storage buffer provides enough time for the gas turbines to be started and enter operation.

This approach eliminates all spinning reserve emissions and essentially doubles the decarbonisation effect when compared to wind without storage.

Repurposing Offshore Infrastructure

FLASC allows for existing offshore pipelines approaching end of life to be repurposed as energy storage device.

This approach allows the operator to repurpose pipeline infrastructure by converting it into an offshore energy storage system using the FLASC hydro-pneumatic technology. This allows for deferring abandonment cost and provides new clean energy revenue streams.

These re-purposed assets can provide grid services, support offshore green hydrogen production or deliver further decarbonization of adjacent oil & gas assets.

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