Dissemination - UNDERGY

2025 March 20th. Visit to the H2B2 and Trinity facilities.

On March 20 (2025), Jose Luis Contreras Beramendi (Head of Department at the CDTI) visited the H2B2 facilities in Dos Hermanas (Seville) and the Trinity gas production facilities in Palancares (Aznalcázar) and the storage facilities in Marismas (Almonte).

“Palancares” natural gas production surface facilities (Trinity Energy Storage); March 20, 2025.

2025 Feb. Master’s Thesis. Assessing soil respiration variability in a Mediterranean ecosystem: a baseline for monitoring an underground H₂ storage in Seville, Andalucia (Miguel Sánchez Pérez).

The study established a baseline assessment of CO₂ exchange and other gases, which will serve as a reference for future MMV campaigns in the hydrogen injection project at the depleted Palancares reservoir. Soil respiration exhibited daily, seasonal, and spatial variability, with temperature being the best predictor of seasonal changes. No significant differences were found between different management practices in olive orchards, and the importance of implementing sustainable practices to enhance the carbon balance was highlighted. No gas leakage was detected within the study area or in nearby reservoirs, further reinforcing the evidence that depleted reservoirs are suitable for gas storage. Continued monitoring and improvements in instrument sensitivity are recommended for future MMV campaigns.

Click on the image below to download the Master’s Thesis.

2024 Nov. EAGE GET2024 Dedicated Sessions Hydrogen (Rotterdam)

EAGE GET2024 Hydrogen and Energy Storage Conference held in Rotterdam on 4-7 November 2024. During the Session “Underground hydrogen storage pilot projects” pilot projects in salt caverns, aquifers and depleted gas fields were presented.

Cristina Yuste (Trinity Energy Storage) presented the conference entitled “UNDERGY. GREEN HYDROGEN STORAGE IN A DEPLETED GAS FIELD IN SPAIN“

2024 Oct. Spain’s first green hydrogen storage facility (news related to the project UNDERGY)

Following the “Mining and Minerals Hall” event held in Seville (20-22 October 2024), the media echoes the announcement made by Julio Matesanz (Trinity Energy Storage Exploration Manager).

‘A pioneering project in Spain puts Seville on the European green hydrogen map‘

‘Spain’s first green hydrogen storage facility will be in Aljarafe‘

‘Spain’s first green hydrogen storage facility will be in Seville ‘

‘The First Green Hydrogen Storage Facility In Spain will be located in the subsoil of Aljarafe in Seville, taking advantage of depleted deposits‘

‘Trinity plans a green hydrogen storage facility in Seville‘

2024 October 16-17. RENMAD H2 Logistics Europe (Zaragoza)

Defense of the arguments promoting underground green H2 storage carried out by Julio Matesanz (Trinity Energy Storage)

2024 Sept. IEA Hydrogen TCP. Annual Technical Meeting of Task 42 (Madrid)

The lessons learned from the UNDERGY project have been compared and contrasted with the experiences of other projects.

Organized by Enagás, Repsol, and Trinity Energy Storage, the annual technical meeting of ‘Task 42, Underground Hydrogen Storage’ (International Energy Agency Hydrogen Technology Collaboration Programme) was held in Madrid in September 2024.

In the image below, the Trinity Energy Storage staff who attended the meeting.

2024 June. CLEANER project: Online Workshop on Hydrogen Quality.

Presented the talk “Hydrogen purification from depleted reservoirs using membrane technology” by Tecnalia with details of their studies in the UNDERGY project: Underground hydrogen storage.

2024 Feb. First Spanish National Green Hydrogen Congress (Huelva)

In round table No. 5 on ‘Strategic Storage and Logistics of H2’, Julio Matesanz (Trinity Energy Storage) defended the need for underground hydrogen storage in Spain and presented the UNDERGY project as an example of Trinity’s commitment with the energy transition.

2023 Oct. RENMAD H2 Logistics Europe (Zaragoza)

Brochure download – INGO – RENMAD H2 Logistics Europe

Conference presented by Julio Matesanz (Trinity Energy Storage)

2023 Nov. XV International Mining Congress (León)

The XV International Mining Congress (León) took place from November 22 to 24 and addressed different areas such as mining operations, environment, safety, strategic resources, and energy, among other topics.

David Fernández (Trinity Energy Storage) defended the UNDERGY project within his conference entitled ‘Storage of renewable H2 in porous media’

2023 Aug. Webinar: Challenges and opportunities in renewable hydrogen storage

Webinar prior to the RENMAD H2 LOGISTICS EU event on October 18-19, 2023, Zaragoza (Spain)

Webinar participation by Julio Matesanz (Trinity Energy Storage)

2023 June: EAGE 2023 . Securing a Sustainable Future Together (Vienna, Austria)

Workshop Lecture: ‘Guadalquivir Basin (SW Spain). Past, present and future of a mature basin’.

Santiago Ledesma (Trinity Energy Storage) presented the UNDERGY project and the underground storage of green hydrogen as a future opportunity for the reutilization of the existing depleted gas fields in the Guadalquivir basin.