Toyota Motor Corp. said Friday it will put on sale in the spring its hydrogen-powered fuel cell system, which could be used by train and ship operators as well as power companies.

Toyota has made the fuel cell system, which it developed for the Mirai vehicle, easier for other firms to use, amid growing awareness about greener technologies. The system uses electricity generated through a chemical reaction between hydrogen and oxygen, and does not emit carbon dioxide.

The top Japanese automaker did not disclose its planned price or sales target for the eco-friendly system.

Toyota rolled out the Mirai vehicle with its world-first mass-produced fuel cell in 2014 and launched its second-generation model in December, touting improved fuel efficiency and a longer range.

The firm's domestic rival Honda Motor Co. also has its own hydrogen-powered vehicle, the Clarity fuel-cell car.

Energy-poor Japan has been promoting the use of hydrogen in recent years, and the number of hydrogen refueling stations has increased. The nation still faces the challenge of improving infrastructure and making hydrogen more widely accepted as an alternative energy source.

Prime Minister Yoshihide Suga has pledged to bring carbon dioxide emissions to net zero by 2050, as part of his focus on green investment and digitalization.