On Friday, the president of Japanese power company Okinawa Electric said that the company is going to start co-firing hydrogen on a trial basis at a commercial gas-fired power plant from March 2024 to reduce CO₂ emissions.

The trial will take place until some point between April and September at the Yoshinoura thermal power station on the southern island of Okinawa. The utility aims to achieve a hydrogen co-firing rate of 30% at the 35MW unit.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

Hiroyuki Motonaga, president of Okinawa Electric, said: “The establishment of hydrogen co-firing technology is a key initiative that can help us achieve two goals: expanding renewable energy and slashing CO₂ emissions.”

He added that if the trial is a success, the utility will consider co-firing hydrogen on a regular basis. The hydrogen will be derived as a by-product of local chemical plants as well as compressed hydrogen.

Currently, more than 90% of power produced by Okinawa Electric is from fossils fuels such as coal. Due to Japan’s jagged topography and limited space as an island, Okinawa Electric produces no nuclear or hydroelectric power.

Through cutting coal usage and increasing the use of renewable energy and liquefied natural gas, the company aims to reduce emissions by 30% from 2005 levels by 2030.

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

In June the Japanese Government announced plans to invest Y15trn ($107.5bn) to supply the country with hydrogen over the next 15 years. This will boost hydrogen supply to 12 million tonnes a year by 2040 and enable similar projects to Okinawa Electric’s. The government will provide Y6–8trn of the funding, while the remainder will come from the private sector.

Climate activists have been critical of Japanese utilities’ efforts to cut their CO₂ emissions by mixing hydrogen with fossil fuels in thermal power stations, saying it is a way to extend the use of more polluting fossil fuels.

Power Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Power Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Recognised with three 2025 Power Technology Excellence Awards, Hover Energy is at the forefront of intelligent microgrids and distributed renewables. Explore how its AI-enabled Microgrid Management System™ , strategic partnerships and networked microgrids are rebuilding the grid from the ground up for a more flexible, resilient energy future.

Discover the Impact