Towards a climate neutral EU:
efficient allocation of EU funds

Development of hydrogen hydraulic compression technology for hydrogen filling stations (H2-Compression)

Organisation: Green Liberty Website: Added: March 21, 2023
Project start date: May 01, 2021
Project end date: November 30, 2023


The project is intended as an industrial study, including a technical-economic feasibility study and experimental development, the aim of which is to acquire new knowledge and skills for the development of an innovative technological solution for the compression of gaseous hydrogen and the creation of its prototype. The novelty of the method is that the solution, which has already been tested in the process of compressing other gases, will be adapted to the compression of hydrogen. Low-pressure hydrogen gas is compressed by gradually introducing the gas into two vertically positioned compression cylinders and compressing it with liquid using a high-pressure hydraulic pump. Each cycle of gas injection and compression is carried out in the compression cylinders until they are completely filled with liquid. As the role of hydrogen is increasing in Europe (REPowerEU has a target of 10 million tonnes of renewable hydrogen by 2030), such solutions are necessary. Low pressure storage could be a simple and cost effective way to store green hydrogen for short term.

Financial data

Total investment: 538 346.55 €. EU investment: 443 005.37 € (82.2%).


As this project seems rather straightforward and without a significant added benefit, it would seem wiser to research better hydrogen compression and storage techniques than already existing ones. Given the predicted role of hydrogen in shipping it might be useful to research the potential of short-term storage for green ammonia creation.  As ammonia is expected to replace current shipping fuel in order for the shipping industry to become climate neutral, it might be wiser to research the potential of short-term storage of green hydrogen for green ammonia creation. 

Information sources


Other info

Ventspils University of Applied Sciences Ventspils University of Applied Sciences' development fund Joint-stock corporation ""LATVO"" State scientific institute - derivative public entity ""Fizikālā enerģētikas institūts"" ""

European Climate Initiative (EUKI)
This project is part of the European Climate Initiative (EUKI). EUKI is a project financing instrument by the German Federal Ministry for Economic Affairs and Climate Action (BMWK). The EUKI competition for project ideas is implemented by the Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH. It is the overarching goal of the EUKI to foster climate cooperation within the European Union (EU) in order to mitigate greenhouse gas emissions.