Venture Firm Raises 4.2 Billion Yen for Electrification Projects
FAR EAST: JAPAN REPORT
PowerX, Inc. says it has raised 4.15 billion yen in funding for two electrification projects: one is to develop its own “Power ARK,” a ship that carries electricity, and the other is to build a large-scale storage battery factory in Japan.
The idea behind the Power Transfer Vessel is to store electricity in container-shaped storage batteries and transmit it by ship, with an eye toward the expansion of offshore wind farms. Conventionally, power is transmitted from offshore wind farms to land via submarine cables, but the aim is to develop the Power Transfer Vessel that can replace submarine cables. This will make it easier to construct power plants offshore in windy distant seas. The construction of submarine cables that pass high-voltage electricity is environmentally hazardous, but the Power Transfer Vessels are cheaper than cables and will enable power transmission to be realized sooner.
Power Ark 100. The first vessel, the “Power ARK 100,” will have a length of approximately 100 meters and will be equipped with 100 storage batteries in the form of shipping containers, enabling it to store 220 MWh of electricity. This is roughly equivalent to one day’s worth of electricity for one city (22,000 households). In the event of a large-scale power outage or other disaster, the ship will serve as a contingency power source. Larger vessels are also planned, and a 220-meter-long vessel capable of carrying 3,000 containers would be able to transport 5,660 MWh of electricity.