Vallourec and Geostock Partner to Develop Energy Storage Solutions
Vallourec and Geostock have signed a memorandum of understanding to enhance their collaboration in developing storage infrastructure for the energy transition, according to a press release dated December 18, 2025. The partnership particularly focuses on hydrogen storage and carbon capture and storage technologies.
Priority on Hydrogen Storage
The collaboration between the two groups primarily focuses on hydrogen storage, where their offerings are complementary, the press release states. Vallourec's Delphy solution can store up to 100 tons of hydrogen under maximum safety conditions, the company specifies. Geostock, on the other hand, offers lined mined cavities suitable for significantly larger capacities, from 500 tons and upwards. Geostock's expertise in underground developments could be mobilized to support the installation of the Delphy solution and associated civil engineering works, according to the document.
Cooperation on Well Architecture and Tubular Solutions
The agreement also includes cooperation on well architecture and tubular solutions for hydrogen applications and for carbon capture, usage, and storage, the press release indicates. Both companies will share their expertise, the results of their research and development, as well as their technical solutions to design wells suited to the conditions of underground hydrogen storage and CO2 injection, the document states. Vallourec's tubular solutions are intended to support Geostock and its clients in deploying underground storage infrastructure, the company specifies.
Part of Vallourec's Strategy to Partner with Energy Sector Experts
This partnership aligns with Vallourec's strategy to partner with experts and major players in the new energy sector, according to the group. Philippe Guillemot, Chairman of the Board and CEO of Vallourec, stated that this collaboration marks a step forward in strengthening cooperation with an expert in underground storage and accelerating the development of infrastructure for a low-carbon energy value chain. Pascal Baylocq, CEO of Geostock, mentioned that this partnership allows his company to expand its range of solutions for underground hydrogen storage in hard rock and to benefit from Vallourec's expertise in metallic materials through various storage techniques.
