The Energietage 2025 convene three interlinked specialist conferences - Storage, Grids, and Data Management - under a single umbrella, positioning the event as a year-end focal point for Austria’s electricity sector. The event takes place on 10–11 November 2025 in Austria Trend Hotel Savoyen (Vienna) and explicitly frames energy storage as a core theme alongside network modernization and data-driven market processes, uderscoring the importance of the functional coupling of flexibility resources, infrastructure, and information in a decarbonizing power system.
Within this broader framework, the Storage conference offers the densest concentration of legal, technical, and market insights relevant to battery energy storage systems (BESS) in Austria. Sessions interrogate the statutory conditions for network charge exemptions, clarify classification issues between storage as a network component and market-active storage, and canvass the interaction of flexibility services with the evolving regulatory architecture. The legal track is complemented by panels on market design, short-term and flexibility trading, and revenue stacking across stand-alone, co-located, and behind-the-meter configurations.
Equally important is the conference’s applied systems orientation. Technical sessions address grid-supportive control, metering concepts, and the coordination between network operators and suppliers for net-beneficial operation. The program situates large-scale batteries within hybrid parks that combine photovoltaic and wind generation, examining how connection concepts shape feasible operating envelopes and how market rules and tariff design constrain or enable system-level services. The intent is to translate high-level flexibility ambitions into practicable control strategies and interconnection designs that preserve reliability while unlocking merchant value.
‘Practical insights into the Theiß battery storage project’
A pivotal moment in this applied orientation is the scheduled case study on the Theiß battery storage project, to be presented at 12:35 on 11 November by Daniel Berthold (Project Manager Large Battery Storage Theiß, EVN Thermal Power Plants). EVN manages and market the flexibility of the Theiß Hybrid Storage System in the balancing and intraday market using the cutting-edge software solution ‘CyberNoc’ – a flexibility management platform, which is used by the Austrian electric utility under the nickname ‘FlexRegler’.
