Idemitsu, the second largest petroleum refiner in Japan, has said that it plans to turn Yamaguchi refinery into a hub of carbon-free energy such as solar power and hydrogen by the 2030s.

In 2022, Idemitsu Kosan Co Ltd, said it would end refining operations at the Yamaguchi plant, owned by its subsidiary Seibu Oil, by March 2024 to cut its refining capacity as the aging and shrinking population in Japan and the global shift to greener energy eats into household demand for petroleum.

The Yamaguchi refinery has a crude oil processing capacity of 120,000 barrels-per-day. It will continue to be a receiving, shipping, and stockpiling terminal for petroleum products even after terminating refining operations.

Idemitsu aims to make the site into a green energy hub, including resource recycling and technology development.

As a first step, the company plans to introduce and expand its carbon-free electricity supply, using its solar power farms among others, in the second half of the 2020s, and aims to start biomass and resource recycling businesses later, an Idemitsu spokesperson said.