Japan has officially designated two new offshore areas—off the coasts of Akita and Fukuoka prefectures—as “promising zones” for future offshore wind farm development, marking a cautious yet deliberate step in its long-term goal of achieving carbon neutrality by 2050.

According to the Ministry of Economy, Trade and Industry (METI) and the Ministry of Land, Infrastructure, Transport and Tourism (MLIT), the sites off Akita City in northern Japan and Hibikinada in Fukuoka Prefecture were upgraded from “preparatory zones” after an expert committee’s evaluation. The designation allows both areas to move closer to becoming “promotion zones,” which are required under Japan’s Offshore Renewable Energy Act to qualify for public auction and development.

The announcement comes as Japan seeks to rebuild confidence in its offshore wind ambitions following the high-profile withdrawal of a consortium led by Mitsubishi Corporation from the nation’s first large-scale offshore wind auction, reportedly due to escalating project costs and uncertain returns.

In parallel, the government named three additional locations as new preparatory zones: offshore Asahi City in Chiba Prefecture, the waters off Goto in Nagasaki for floating wind structures, and the area near Ichikikushikino City in Kagoshima. These zones represent Japan’s growing focus on expanding wind energy capacity across both fixed-bottom and floating platforms.

METI and MLIT also confirmed that Akita, Asahi, and Hibikinada will be included in the “centralised approach” framework—an initiative where central and local authorities collaborate on environmental and seabed surveys to accelerate the pre-construction phase.

Offshore wind remains a central pillar of Japan’s clean energy transition, yet its rollout has been hindered by rising material costs, supply chain bottlenecks, and regulatory delays. The government is now reviewing its support mechanisms to ensure greater commercial viability and investor confidence for future auctions.