Insights & Analysis
A straight-to-the-point monthly summary of important regulatory discussions and changes in Japan's power market.
In the May 2026 issue:
- Summary of METI, OCCTO, and other committee meetings
- Proposed revised thresholds for solar project EIA
- Revised capacity market withdrawal penalty system proposal
- Kyushu renewable curtailment system revision
- METI power business license and registration changes
- Nuclear power plant operational status updates
- ...and more
The next issue will be released on July 15, 2026.
Enehub Charts of the Week
Japan’s renewable power promotion surcharge, which applies to most power delivered through the grid, will be set at 4.18 yen per kWh for power metered between May 2026 and April 2027. The levy that is used to fund FIT and FIP subsidy schemes will be 5% higher in FY2026 than the previous year’s 3.98 per kWh and the highest to date.
Japan’s latest listed infrastructure fund, Green Light Renewable Infrastructure Fund, paid between about 403 million and 526 million yen per MWDC for the high-FIT solar power plants it acquired in the Tohoku and Tokyo TSO areas. It paid an average of 190 million yen per MWDC for the portfolio’s two 18 yen per kWh FIT assets.
Kyushu became Japan’s first region to experience economic curtailment of solar and wind generation in October 2018. Since then, the phenomenon has gradually spread to other TSO areas and, on March 1, 2026, reached Tokyo, the final previously unaffected grid zone.
