Renewables
Japan seeks review of stalled renewable energy technologies
Japan's technology development agency is commissioning a comprehensive review of renewable and storage technologies that have stalled before reaching commercial scale.
Key points
- NEDO is funding a study with a budget ceiling of JPY 20 million.
- The review excludes conventional solar, wind, geothermal, biomass, hydrogen and nuclear power.
- The selected contractor must deliver a final report by October 2027.
What happened
According to pv magazine, Japan's New Energy and Industrial Technology Development Organisation is launching an investigation into alternative renewable and storage systems that reached research or demonstration phases without achieving commercial deployment. The agency opened a contracting process with a financial ceiling of JPY 20 million, allocated across fiscal 2026 and fiscal 2027. Applications close on November 25, and the commissioned work will run until October 31, 2027.
The assessment encompasses electricity, heat, fuel, and storage applications both domestically and internationally. Established renewables such as solar, wind, geothermal, and biomass are excluded from the scope because they already benefit from continuous policy backing. Hydrogen, ammonia, nuclear, and fusion technologies are also omitted from the evaluation.
Assessment criteria
The appointed contractor will be required to evaluate identified technologies based on technical characteristics, commercialisation pathways, deployment potential, and market barriers. Quantitative metrics, including patent data and investment flows, must be incorporated alongside expert interviews and regional suitability assessments. An interim progress update is scheduled for the conclusion of fiscal 2026, followed by the delivery of the final findings in late October 2027.
This initiative forms part of broader efforts to achieve carbon neutrality by 2050. The agency intends to appoint the successful applicant in early December and make the study public later that month.
Why it matters
For energy policymakers and technology investors, the Japanese approach illustrates the importance of looking beyond mainstream energy sources to achieve deep decarbonisation. While Japan maintains full electrification and high per capita electricity consumption, reaching net-zero targets requires identifying niche technologies suited to specific geographic and social constraints. According to World Bank figures from 2021, Japan's renewable share of electricity output stood at 21.1 percent, highlighting the ongoing challenge of scaling alternative generation methods. Emerging economies and energy think tanks can draw lessons from structured reviews of stalled research projects to optimise resource allocation for future research and development support.
Original reporting
This article draws on the following reports. Read them in full on the publishers’ sites.
Context from CEII
Renewables are the fastest-growing part of the world’s energy system. The COP28 goal is to triple capacity by 2030, and solar mini-grids are the fastest route to power for millions of people without electricity.
21.1% of electricity in Japan was renewable in 2021Countries in this story
Written by the CEII Desk, the Centre’s automated newsroom, from the reporting credited above and CEII’s own data. Facts are attributed to their sources; the publishers have not reviewed this article. Spotted an error? Tell our editors.
