Presently, renewable sources have to immediately sell all the energy they produce.
If there is no immediate demand it is wasted.
This is restricting the growth of the market, especially for large-scale offshore systems.
Renewable Energy Storage
Store extra energy where it is being produced, and use it when it is needed.
Storage allows better grid integration.
This means more renewables can be put to use, breaking existing market barriers.
The FLASC Technology
Our vision is to integrate large-scale energy storage into offshore renewables.
Batteries are simply not ideal in this scenario.
Our technology is tailor-made for the offshore market, exploiting existing infrastructure and supply-chains.
FLASC is an energy storage device that can be integrated directly into a floating offshore platform. Energy is stored using a hydro-pneumatic liquid piston, driven by a reversible pump-turbine.
Charging Mode: electricity is used to pump water into a closed chamber containing pre-charged air.
Discharging Mode: the pressurised water is released through a hydraulic turbine to generate electricity.
FLASC leverages existing infrastructure and supply chains, along with the marine environment itself as a natural heatsink, resulting in a safe, reliable and cost-effective solution.
The first prototype was deployed in Q4 2017 in the idyllic Grand Harbour of the Maltese Islands.
This set-up stores energy generated from an array of PV panels. The stored energy is released in a controlled manner, allowing close monitoring of the performance and efficiency of the device.
Comprised almost entirely from standard off-the-shelf components, the prototype is the ultimate proof-of-concept of our technology.
The prototype was constructed in collaboration with our industrial partner Medserv plc., with funding from the Malta Council for Science and Technology.
Renewable source deliver a power output that oscillates with time. However, grid operators can only accept small variations in supply.
The FLASC technology can be used to convert intermittent renewable energy supply into a stepped output.
This facilitates grid integration by allowing the operator to schedule operations at specific intervals.
When generating power from renewable sources, the natural conditions may change suddenly. This results in a rapid increase or decrease in output power.
The FLASC technology can be used to control the ramp rate, absorbing or dissipating energy to slow down rapid changes in output power.
This allows the grid operator to better adapt to changes in the natural environment.
The FLASC technology can also be used in applications requiring large volumes of cold pressurised seawater.
- Liquefaction of natural gas (LNG)
- Offshore H2 production
- Liquefaction of CO2 for carbon capture and storage
- Seawater desalination
- Water injection for oil extraction from subsea wells
The FLASC Technology is Patented.
- United States
- Europe (EPO)
Ref: WO 2016/128962 A1
Prof. Inġ. Tonio Sant
Senior Engineer (Team Leader)
Dr Inġ. Daniel Buhagiar
Senior Research Engineer
Dr Inġ. Robert Farrugia
Senior Research Engineer
Knowledge Transfer Advisor
Dr Inġ. Federica Maria Strati
Get in Touch!
TAKEOFF Business Incubator,
University of Malta,