The EU's European Investment Bank has pledged support for a long-duration thermal energy storage project and a gravity-based energy storage demonstration project. Contact online >>
The EU''s European Investment Bank has pledged support for a long-duration thermal energy storage project and a gravity-based energy storage demonstration project.
They have been selected among 15 projects defined as large-scale — each requiring capital costs of more than €7.5 million (US$8.5 million) — through EU Innovation Fund grants for Project Development Assistance (PDA), administered by the bank.
Of these, seven were selected to receive direct funding from a €1.1 billion budget and include hydrogen, carbon capture and storage, advanced solar cell manufacturing and other technologies.
The other 13 projects cover technologies including wind propulsion for cruise ships, hydrogen fuel cells for marine vessels, green methanol production, greenhouse gas (GHG) and carbon capture and storage, bioethanol, power-to-liquid for aviation fuels and other areas.
There is also an electric vehicle (EV) battery project, which will use ultra-pure electrolyte salt to improve lithium-ion batteries and a project to develop and upscale the synthesis of curved graphene and electrode production technologies.
Sun2Store, a 100MW/1,000MWh thermal energy storage project in Spain was selected for a PDA agreement. Using technology developed by US startup Malta Inc, the project will enable 10-hour duration storage of energy.
Malta Inc has developed a technology it calls ''pumped heat'' electricity storage, which could provide up to 200 hours of storage, although the company is largely targeting 10 – 12 hour applications. It converts electricity to heat, which is then stored in molten salt. Simultaneously, the system produces cold energy stored in special vats of an anti-freeze-like cooling liquid.
The hot and cold energy are then converted back into electricity as required, using a temperature difference-driven heat engine. The company has raised funds from investors including Bill Gates'' Breakthrough Energy Ventures and is one of the founding members of the international Long Duration Energy Storage Council.
Funds have been granted to Malta Inc''s European affiliate company, Malta Iberia Pumped Heat Electricity Storage (Malta Iberia). The EIB will provide technical assistance to Malta Iberia, including an independent technology assessment, which will verify the storage facility''s key technical parameters.
Located in mainland Europe, the project follows a 250kW demonstrator which operated in Scotland’s capital city Edinburgh throughout the summer and for which specialists appointed by the EIB have begun evaluating test results.
The results of the Edinburgh demonstrator are to be combined with a review of local revenue streams to produce a commercial risk assessment that will inform detailed design and development activities.
"We already have a high level of confidence in our technology and its ability to store energy effectively. What these studies will bring is increased understanding and confidence in how a full-scale project will play into a specific energy market,”said Chris Yendell, project development manager at Gravitricity.
Gravitricity’s energy storage solution works by raising weights in a deep shaft, with disused mine shafts currently being targeted by the firm, and releasing them when energy is required s proposed single weight full scale system could deliver up to 2MWh of energy storage, with future multi-weight systems having the potential for a capacity of 25MWh or more.
In October, Gravitricity engineers visited the recently mothballed Staříč mine in the Moravian Silesian Region of Czechia to investigate its potential for the project. The Gravitricity team is tohead to mainland Europe later in January to further evaluate their shortlist, with a final selection decision expected within the next few months.
The firm is also exploring opportunities for a purpose-built prototype shaft at a brownfield location in the UK, where gravity storage could be combined with hydrogen and inter-seasonal heat storage.
The European Commission has approved €19.8 million (US$20.1 million) in state aid from the government of Croatia to energy storage operator IE-Energy for a series of grid-connected projects.
The aid will be a direct grant to IE-Energy and will cover approximately 30% of capital expenditures for a series of grid-scale battery energy storage systems.
The systems will be installed on the Croatian grid to help the transmission system operator (TSO) HOPS (Hrvatski operator prijenosnog sustava) balance supply and demand and to store energy for when needed.
The Commission, the executive arm of the EU, concluded that the aid was necessary and appropriate to address an existing market failure, citing a lack of incentives to provide balancing services to TSOs with grid-scale energy storage facilities.
A press release did not outline how many energy storage projects are being planned by IE-Energy or HOPS. A 2021-2030 transmission network development plan from the latter, dated January 2021, mentions one large project which is being assessed for a 2024 connection date.
Croatia is also participating in a trial project, SINRO.GRID, with neighbour Slovenia to see how a 50MWh battery system in Slovenia can help the two countries collaborate to help grid flexibility in both.
The approval for IE-Energy’s funding comes a week after the Commission approved a much larger amount from the Greek government, €341 million, to fund the development of a 900MW pipeline of grid-connected battery storage to be procured through a competitive tender.
IE-Energy is based in Rijeka and was founded in 2020 with, in its own words, a mission to create a new type of flexible and decentralised energy power provider, or aggregator, in the electricity market. It also wants to allow small and medium power producers (prosumers) and consumers to participate directly in energy markets.
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