Riga Port and COOLERGY conducted the first test charging of ship batteries in Latvia using a mobile hydrogen power generator COOLERGIZER

Riga Port Group, a leading operator, developer and investor of port assets and companies related to rail transportation in Latvia, and the European COOLERGY, specializing in hydrogen solutions, organized the first ever test charging of ship batteries using a mobile hydrogen fuel cell power generator in the Port of Riga.

Kirill Lyats, CEO of COOLERGY:

Finally, our beloved Free Port of Riga. The place where TGM4 locomotives will start working in the coming year, which we are currently converting to liquid hydrogen together with Operail in Tapa( Estonia). As is known, the Port adopted a program several years ago, according to which carbon dioxide emissions into the atmosphere should be reduced to zero by 2030.
And the progress of the Port is obvious. We were presented with a 200 kW electric vessel that runs on batteries. Unfortunately, the power of our Coolergizer was not enough to charge this boat, but we swore on our word of honor in hydrogen that by the end of this year we will make a special Coolergizer to charge such a powerful unit.
However, we managed to connect to the auxiliary vessel and recharge its batteries. We certainly see great potential for using Coolergizer for river and sea consumers, which could be a transitional stage to the widespread introduction of liquid hydrogen as a bunker for large vessels and gaseous hydrogen for small boats.”

The COOLERGY team previously reported that on April 22, 2025, they began the “Big Hydrogen Journey” with COOLERGIZER from Tallinn to Madrid. The Riga port was the team’s second stop.

And the first seaside stop was the Narva Yacht Club (Estonia, Narva-Jõesuu Jahtklubis ).

Kirill Lyats, CEO of COOLERGY:

“Local yacht enthusiasts gathered and watched with interest the charging of the power unit of one of the yachts.
We discussed with the head of the club the possibility of further cooperation, including the placement of a houseboat in the marina that runs on hydrogen and, in principle, the operation of small vessels using hydrogen as a bunker.”

One of the following seaside stop was the Port of Barcelona, where COOLERGIZER was presented to employees of the key seaport in Spain.

Kirill Lyats, CEO of COOLERGY:

“Barcelona is the largest Port of Spain and the most advanced. I remember that it was one of the first ports in the world to start bunkering ships with LNG.
A month ago we visited our colleagues in the Barcelona port, discussed their sustainability program until 2050 and promised to return with Coolergizer. We returned. We discussed. We presented.
Now the next step is to start using such chargers, possibly with greater power, to provide mooring power for ships and yachts in the port.
As we understand, about 15% of superyacht and commercial vessel owners are interested in connecting to green electricity. Only Coolergizers fueled with green hydrogen can provide such distributed charging at the port’s dispersed berths.
Therefore, our goal is to deliver Coolergizers to the ports of Spain, Latvia and Estonia this year – countries where we are actively working today and where we will be able to ensure our own hydrogen supplies in the near future».

The presented COOLERGIZER has an output power of up to 40 kW with the possibility of increasing to 80 kW, as well as a voltage of 27 to 380 V. It is designed for autonomous power supply or recharging of objects remote from public networks and without access to green energy.