The first edition of the Green Energy Fair took place at Arena Zagreb (29-30 October 2025), and ONSA Plus was proud to participate among the regional renewable-energy community. The fair brought together more than 110 exhibitors from around 20 countries and welcomed approximately 4,000 visitors from Croatia and neighbouring markets.
The exhibition and conference covered a wide range of topics, including photovoltaics, energy-storage systems, e-mobility infrastructure, and sector coupling. One noted area of focus was high-quality cabling and system safety in PV installations — for example, exhibitors such as KBE Elektrotechnik GmbH and Tesla Cables presented solutions designed to meet strict European standards for solar cables. KBE Elektrotechnik Gmbh
Key technical themes included:
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The importance of cable quality and system components in ensuring long-term performance of PV and ESS (energy storage systems).
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Exploration of floating PV systems and their mounting logistics, reflecting a move beyond conventional ground or rooftop installations.
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Discussion of how battery storage can support grid flexibility and ancillary services, with examples shown of systems being aggregated for grid-regulation purposes.
The venue itself was a highlight: Arena Zagreb offered a modern, well-organized setting that gave exhibitors and visitors a strong sense of professionalism and scale. However, many participants felt that the event could have benefited from stronger promotion; a bit more visibility might have attracted a wider public audience to the exhibition floor.
Despite these first-edition growing pains, the fair gathered a solid base of industry professionals, innovators, and renewable energy enthusiasts.
For us, the fair provided a valuable opportunity to meet with installers, project developers, and component suppliers, gather insights on emerging technologies, and align our solutions with regional market developments in Central Europe.
Thank you to everyone who visited our stand. We look forward to continued collaboration.
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