{"id":14608,"date":"2025-10-09T09:00:05","date_gmt":"2025-10-09T00:00:05","guid":{"rendered":"https:\/\/www.rts-pv.com\/en\/?post_type=blogs&p=14608"},"modified":"2025-09-24T10:40:42","modified_gmt":"2025-09-24T01:40:42","slug":"handling-of-non-fossil-value-for-storage-batteries-annexed-to-renewable-energy-systems-charged-from-the-grid","status":"publish","type":"blogs","link":"https:\/\/www.rts-pv.com\/en\/blogs\/14608\/","title":{"rendered":"Handling of non-fossil value for storage batteries annexed to renewable energy systems charged from the grid"},"content":{"rendered":"
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Japan Solar Update: No.169 (Oct 6 ~ 10, 2025)\u00a0<\/h6>\n<\/div>\n
\"Non<\/h6>\n<\/div>\n<\/div>\n
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<Key points><\/span><\/span><\/span><\/strong><\/p>\n

    \n
  • Starting from the electricity generated in April 2025, certification of the amount of electricity will begin for storage batteries annexed to renewable energy generation facilities that are changed from the grid<\/li>\n
  • While clearly specifying the conditions for the certification of electricity amount, the method for certifying the non-fossil value is organized for cases suce as FIP facilities where the portion eligible for the FIP subsidy is converted into non-fossil certificates<\/li>\n<\/ul>\n<\/div>\n

     <\/p>\n

    \n

    Reference Non-fossil value for storage batteries annexed to renewable energy charged from the grid<\/p>\n<\/div>\n

     <\/p>\n

    \"Non-fossil<\/p>\n

    \n

    Charging from the grid is possible from April 2024 for storage batteries annexed to newly-approved FIP-based generation systems, and from April 2025 for storage batteries annexed to previously approved FIP-based generation systems<\/p>\n<\/div>\n

     <\/p>\n

     <\/p>\n

    \n

    Starting with electricity generated in April 2025, certification of the amount of electricity<\/span> will begin for storage batteries annexed to renewable energy generation facilities that are charged from the grid<\/p>\n<\/div>\n

     <\/p>\n

    <\/div>\n
    \n

    Conditions for certifying the amount of electricity when storage batteries annexed to <\/strong><\/p>\n

    renewable energy generatin facilities are charged from the grid<\/strong><\/p>\n<\/div>\n

    \n
      \n
    1. No<\/span> demand facilities*1 or fossil-fueled generation facilities<\/span> other than the relevant renewable energy generation facilities exist at a single demand site, including the location of the renewable energy generaion facilities <\/span><\/span><\/li>\n
    2. The electricity used to calculate the certified amount must be measured using a specified measuring instrument<\/span> under the Measurement Act<\/li>\n
    3. When the electricity used to calculate the certified amount is determined by the difference in meter readings<\/span>, the following requirements regarding differential measurement must be met<\/li>\n<\/ol>\n<\/div>\n
      \n
        \n
      • Efforts should be made to ensure that errors<\/span> in differential measurement remain within the permissible tolerance required for the specified measuring instrument<\/span><\/li>\n
      • The reading timing<\/span> of each measurement instrument should be synchronized<\/span><\/li>\n
      • The wiring should allow proper diffential measureent, such as not placing transformers or other power-consuming equipment between the measurement instruments<\/span><\/li>\n
      • Each party should be able to access the meter readings as needed<\/span><\/li>\n<\/ul>\n

         <\/p>\n

        *1 Except for the cases where the generation facilities, inverters, co-located storage batteries, or other equipment essential for the operation of the relevant renewable energy generation facilities consume only a negligible amount of electricity used by the relevant facilities<\/span><\/p>\n<\/div>\n

         <\/p>\n

         <\/p>\n

         <\/p>\n

        \n

        The method for certifying non-fossil value for each case is organized<\/span><\/p>\n<\/div>\n

        \n
          \n
        • Efforts should be made to ensure that errors in differential measurement remain within the permissible tolerance required for the specified measuring instrument<\/li>\n
        • The reading timing of each measurement instrument should be synchronized<\/li>\n<\/ul>\n<\/div>\n
          <\/div>\n

           <\/p>\n

          Figure 1 Handling of non-fossil value for storage batteries annexed to renewable energy systems charged from the grid <\/span><\/p>\n

          Source: Materials of the briefing session for business operators regarding the certification of non-FIT non-fossil power sources (July 3, 2025), compiled by RTS Corporation<\/span><\/p>\n","protected":false},"featured_media":14677,"template":"","blogs_category":[50],"class_list":["post-14608","blogs","type-blogs","status-publish","has-post-thumbnail","hentry","blogs_category-pv-market-trend"],"acf":[],"yoast_head":"\nHandling of non-fossil value for storage batteries annexed to renewable energy systems charged from the grid | 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.\" 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