Jernej Jozič presenting HAVEN’s prefeasibility tool at EEM26 in Trondheim

Putting a Price on Hybrid Storage: HAVEN Presents Its Prefeasibility Tool at EEM26 in Trondheim

The economics of hybrid battery storage reached the energy market community in June, when the HAVEN project presented a new paper at EEM26, the 22nd International Conference on the European Energy Market. The conference took place in Trondheim, Norway, from 22 to 24 June 2026, organised by the Norwegian University of Science and Technology (NTNU), SINTEF Energy Research and the IEEE PES Norway Chapter under the auspices of the IEEE Power & Energy Society.

A Prefeasibility Tool for Hybrid Energy Storage

Jernej Jozič, researcher at the Innovation and Development Institute of the University of Ljubljana (IRI UL), gave an oral presentation of the paper “Economic Viability of Hybrid Energy Storage System: Deploying a Prefeasibility Tool for Value Assessment”, co-authored with Andrej Ferdo Gubina. The paper shares results from HAVEN’s work on sizing and cost optimisation of the hybrid energy storage system (HESS), where IRI UL is responsible for the prefeasibility economic analysis. That analysis covers the services a HESS can offer to the grid, the price models those services could follow, the investment costs that come out of the system’s dimensioning and the resulting range of return on investment.

Storage and Market Design at the Top of the Programme

The conference opened with a plenary on seasonal storage, covering hydropower in Northern Europe, the optimisation of large-scale storage under variable inflows and the role hydrogen could play in the European system. Later plenaries turned to decarbonisation pathways, power market design under physical grid constraints, whether energy-only markets can deliver a resilient power system and flexibility from local energy communities and industry. Speakers came from Nordic utilities and grid operators, research institutes such as SINTEF and IIASA, and universities in Norway, Switzerland and Canada, while the parallel tracks included a special session on integrating batteries into the power system.

Why the Business Case Matters for HAVEN

HAVEN is developing a HESS that combines high-energy and high-power battery systems so that one installation can provide several services to the grid. Whether such a system gets built depends on what those services are worth as much as on how well the batteries perform. With market design and storage running through the EEM26 plenaries, the conference was a fitting place to put HAVEN’s value assessment in front of the people who study how storage earns its revenue in European markets.

More information about the event is available on the EEM26 programme page.

Funded by the European Union under grant agreement 101137636. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or CINEA. Neither the European Union nor the granting authority can be held responsible for them.

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