As I mentioned before, I've recently been interested in the decarbonized society in addition to the go green movement. I found an article about one verification project online.
The project, which local buses run with hydrogen produced by extra power like solar power, was started by Kyushu power electric company and Kyushu university on November 15. They plan to apply a fuel-cell electric bus in between Kyushu university campus and JR station in Fukuoka, and the bus plans to run until 2025. Hydrogen is produced by electricity at the hydrogen station in the university campus.
Kyushu has a good sunlight condition and solar power is wide-spread. Sometimes, power supply exceeds demand depending on the weather and seasons and the company has to reduce power generation. The project produces hydrogen for bus's fuel utilizing extra power like this.
Kyushu power electric company said that "Kyushu has a lot of renewable energy like solar power but it's hard to store electric power. So, this is a very informative project which will try to make the most of power underused.