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Elcogen’s new factory was built by Maru Ehitus to take global markets by storm
17.09.2025On Tuesday night, Estonian clean energy technology manufacturer Elcogen officially opened its new state-of-the-art technology facility in Loovälja Industrial Park on the outskirts of Tallinn that was built by Maru Ehitus. Design firm Norte, installation company Maru THM and steel producer Maru Metall of Maru also contributed to the project.
The new factory, named ELCO I, marks a pivotal step in scaling up the company’s role in the global energy transition. As demand for reliable Solid Oxide-based clean energy solutions accelerates worldwide, Elcogen is now positioned to deliver the high-performance technology the market needs, at commercial volumes, Elcogen said in a statement. The new facility will increase the company’s available production capacity by nearly 30 times, from 10 MW to 360 MW, positioning it as one of Europe’s largest manufacturers of high-efficiency Solid Oxide Fuel Cell (SOFC) and Electrolysis (SOEC) technology.
Elcogen also emphasised in its statement that with approximately EUR 50 million in capital investment, the facility was delivered on time and on budget by Maru Ehitus. In fact, the day before the opening event, Elcogen CEO and founder Enn Õunpuu told Äripäev Radio that the factory cost 5 per cent less to build than had been anticipated. “All the engineering solutions had been carefully thought through, allowing for no surprises during the construction process,” Õunpuu noted on the radio programme.
Opening ceremony in the media (in Estonian): Mehed valges avasid Tallinna lähedal miljonitehase (ÄP), Elcogen avas Tallinna külje all kütuseelementide tootmisuksuse” (ERR)
Moment from the opening ceremony, with Maru Ehitus CEO Margo Dengo looking into the camera at the centre. Due to strict rules, the 300 guests attending the ceremony watched the ceremonial pushing of the power button on the screen.
Screenshot from Elcogen’s video (Elcogen’s LinkedIn post here)
This is what the new factory looks like. Photos: Karl Kasepõld
How the factory was born. Video by Elcogen