{"id":14787,"date":"2025-10-30T09:00:02","date_gmt":"2025-10-30T00:00:02","guid":{"rendered":"https:\/\/www.rts-pv.com\/en\/?post_type=blogs&p=14787"},"modified":"2025-10-24T12:21:17","modified_gmt":"2025-10-24T03:21:17","slug":"higher-renewable-energy-curtailment-expected-in-kyushu-and-other-regions","status":"publish","type":"blogs","link":"https:\/\/www.rts-pv.com\/en\/blogs\/14787\/","title":{"rendered":"Higher Renewable Energy Curtailment Expected in Kyushu and Other Regions"},"content":{"rendered":"
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Japan Solar Update: No.172 (Oct 27 ~ 31, 2025)\u00a0<\/h6>\n<\/div>\n
\"Curtailment<\/h6>\n<\/div>\n<\/div>\n

Japan\u2019s updated outlook for FY 2025 projects a rise in renewable energy output curtailment across several regions. Kyushu is expected to record the highest curtailment rate at 5.9%, followed by Shikoku (3.8%), Tohoku (3.0%), and Chugoku (1.5%). The increase reflects the expansion of renewable capacity\u201477.4 GW of PV and 6.1 GW of wind as of March 2025\u2014along with weather variations and reduced electricity demand in some areas.<\/p>\n

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<Key points><\/span><\/span><\/span><\/strong><\/p>\n

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  • The outlook for renewable energy output curtailment for FY 2025 has been updated: the Kyushu area is projected to have the highest curtailment rate at 5.9%, followed by the Shikoku area at 3.8%, the Tohoku area at 3.0%, and the Chugoku area at 1.5%<\/li>\n
  • Compared with the initial outlook for FY 2025, output curtailment rates have increased in the Tohoku, Tokyo, Kansai, and Shikoku areas<\/li>\n
  • The main factors behind this increase are the increase in renewable energy installed capacity, fluctuations in weather conditions such as solar radiation, and decreased demand in some areas<\/li>\n
  • The renewable energy installed capacity assumed in the outlook reflects the PV installed capacity of 77.4 GW and wind installed capacity of 6.1 GW as of the end of March 2025, incorporating the latest capacity additions and planned grid connection capacity<\/li>\n<\/ul>\n<\/div>\n

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    FY 2025 updated outlook of renewable energy output curtailment<\/strong><\/p>\n

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    \"Curtailment The interconnection line utilization rate is calculated mainly based on the most recent performance (during the low demand period)<\/span><\/p>\n<\/div>\n

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    In the FY 2025 updated outlook of renewable energy output curtailment, the output curtailment rate is projected to increase in the Tohoku, Tokyo, Kansai, and Shikoku areas<\/span> compared to the initial outlook for FY 2025<\/p>\n

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    Estimate assumptions for FY 2025 updated outlook of renewable energy output curtailment<\/p>\n<\/div>\n

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    installed capacities of renewables, etc.<\/span><\/p>\n<\/div>\n

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    Adding the recent increase in installed capacity and the planned grid connection capacity to the installed capacities at the end of March 2025<\/span> (PV: 77.4 GW<\/span> and wind: 6.1 GW<\/span>)<\/p>\n

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    Main factors for the changes in output curtailment rates (comparison with specifications in the initial outlook for FY 2025)<\/p>\n<\/div>\n

     <\/p>\n

    Factors for the increase:<\/strong> Increase in the renewable energy installed capacities<\/span>, fluctuations in weather conditions such as increase in solar radiation, decrease in demand in some areas, etc<\/p>\n

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    Factors for the decrease:<\/strong> Increased demand in some areas<\/span>, shutdown of operations (thermal power, etc.) due to breakdowns and periodic inspections, improvement in interconnection line utilization rate, etc<\/p>\n

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    Figure 1 Summary of updated outlook of renewable energy output curtailment in FY 2025 <\/span><\/p>\n

    Source: Materials of the 4th meeting of the Working Group on the Next-Generation Electric Grid (September 24, 2025), compiled by RTS Corporation<\/span><\/p>\n

     <\/p>\n","protected":false},"featured_media":14824,"template":"","blogs_category":[44],"class_list":["post-14787","blogs","type-blogs","status-publish","has-post-thumbnail","hentry","blogs_category-regulations-government-initiatives"],"acf":[],"yoast_head":"\nHigher Renewable Energy Curtailment Expected in Kyushu and Other Regions | RTS Corporation<\/title>\n<meta name=\"description\" content=\"Based upon over 40 years of our experiences and accumulated knowledge in PV,RTS Corporation has been providing in RTS Corporation is a leading PV industry \/ market consultingcompany and has been supporting the growth of the PV industry for nearly 40 years.We provide an optimal consulting service for each client interested in the PV business.\u3000Weekly PV news is available at RTS PV Blog.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.rts-pv.com\/en\/blogs\/14787\/\" 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