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Power-To-X Symposium 2025
Fernando Ruiz del Olmo, CEO at Riegosur (institution coordinating the development of PUSH-CCC), presented the latest updates on the project at the Power-To-X Symposium 2025 (Aarhus, Denmark).
More information
New article coming!
We have published a new article in the prestigious Journal of Energy Storage. Don't miss it!
You can access it at the following link: Scientific article
January-March newsletter
PUSH-CCC Newsletter
Introduction
In a constantly evolving energy landscape, advances in large-scale energy storage are crucial for the transition towards a more sustainable future. During January and February 2026, we have witnessed significant developments in storage technologies, particularly in the field of compressed air (CAES and AA-CAES). These advances not only reflect the results of innovative research but also highlight the need for a regulatory framework to support their implementation. In this context, the PUSH-CCC project continues to lead the way in the research and development of ACAES technologies, contributing to the decarbonisation of Europe.
Key News
1. Nature review on CAES technologies and perspectives
A recent article in Nature examines the potential of CAES, highlighting that large-scale facilities can achieve full-cycle efficiencies of between 50% and 70%. The optimisation of components is essential to compete with other storage solutions.
Read more →2. Waste heat recovery in AA-CAES
A study in the Journal of Energy Storage shows how the integration of heat recovery in AA-CAES systems can boost energy performance, improving economic competitiveness without proportionately increasing costs.
Read more →3. Cogeneration analysis based on AA-CAES
Research published in Energy Science & Engineering suggests that AA-CAES systems can simultaneously supply electricity and heat, improving economic viability by creating additional revenue streams.
Read more →4. CAES as a long-duration solution in the European StoreMore project
The StoreMore project highlights that CAES systems are competitive in long-duration storage, with investment costs ranging between €360 and €900/kW, making them viable compared to other technologies.
Read more →5. Joint letter from the European sector to accelerate long-duration storage
A coalition of energy associations has requested the European Commission for a regulatory framework that supports the deployment of long-duration storage technologies, emphasising their importance for security of supply.
Read more →6. European webinar on scaling flow batteries
The Flow Batteries Europe webinar highlights the growing interest in flow batteries as a large-scale storage solution, emphasising the need for a favourable market framework.
Read more →7. Record 27.1 GWh of battery storage in the EU in 2025
The European Union has installed 27.1 GWh of battery storage capacity, marking a 45% growth compared to the previous year, mainly in grid-scale systems.
Read more →PUSH-CCC will be at #FTW2026
The 2026 edition of Future Tech Week (FTW) is taking place from January 19th to 23rd, 2026 – mark your calendars!
FTW 2026 will once again bring together innovators, researchers, and key stakeholders for a week dedicated to collaboration, knowledge-sharing, and networking. Designed as a platform for deep- tech projects, this event provides an opportunity to showcase achievements, foster meaningful connections, and stimulate synergies among EIC-funded projects, external experts, and the broader research and innovation community.
As part of FTW 2026, our Consortium RIEGOSUR, S.A., UNIVERSIDAD DE SEVILLA (USE), INSTITUTO TECNOLOGICO DE CANARIAS,S.A. (ITC), ETHNICON METSOVION POLYTECHNION (NTUA), POLITECNICO DI TORINO (POLITO) and UNIVERSITA DEGLI STUDI DI BRESCIA (UNIBS), are hosting an event on 23 Jan 2026, 10:00-10:30. This event will focus on a presentation of the EIC funded PUSH-CCC Project “PUSHING THE LIMITS OF LARGE-SCALE ENERGY STORAGE: Optimized Combined Cycle CAES”, and our vision of how this technology could become a key enabler of Europe’s energy transition, helping to maximize the impact of investments under the European Green Deal and support
Event page: PUSH-CCC event
Registration link: Attendance to the event
Follow #FTW2026 and #EICCommunities for updates and visit https://deepsync.eu/future-tech-week-2026/ and https://eic.ec.europa.eu/eic-communities_en webpages.
Join us in driving the future of deep-tech innovation, together!
LinkedIn: DeepsyncEU
Facebook: DeepsyncEU
Authorisation for the explosives storage facilities
We are in luck!
PUSH-CCC has obtained the necessary authorisation to begin construction of the explosives storage facilities, which will be required for the project's construction phase.
Let's get started
Submission of Mining Project Authorization
We are thrilled to announce that we have finally submitted the mining project for authorisation!
It has been a very long journey to reach this point. In order to define the mining works, we first had to design the experimental plant layout and undertake detailed civil engineering design. This was a significant challenge due to several confluent factors:
· Being a first-of-its-kind plant with severe operating conditions and great difficulty in locating suitable materials and construction procedures
· Being on La Gomera island, which has presented us with significant logistical challenges.
· Managing our budget for experimentation with both our initial 65 bar plant layout and our supercritical plant layout.
· Intending to reach TRL5 with our experimentation and demonstrate our significantly increased energy density with our new plant layout.
· Having to deal with an interdisciplinary design including mining, civil engineering, equipment, installations and control.
This is a major project for a pre-designed experimental plant capable of conducting experiments at 65 and 120 bar. The details of the civil engineering works have also been designed.
Kick-off meeting
Portfolio meeting
