{"id":27227,"date":"2026-01-27T12:55:57","date_gmt":"2026-01-27T12:55:57","guid":{"rendered":"https:\/\/itbusinesstoday.com\/?p=27227"},"modified":"2026-01-27T12:55:57","modified_gmt":"2026-01-27T12:55:57","slug":"ntt-and-chugoku-electric-power-pioneer-power-sector-ai-with-custom-llm-trial","status":"publish","type":"post","link":"https:\/\/itbusinesstoday.com\/ja\/tech\/ai\/ntt-and-chugoku-electric-power-pioneer-power-sector-ai-with-custom-llm-trial\/","title":{"rendered":"NTT\u3068\u4e2d\u56fd\u96fb\u529b\u3001\u30ab\u30b9\u30bf\u30e0LLM\u8a66\u9a13\u3067\u96fb\u529b\u5206\u91ce\u306eAI\u3092\u958b\u62d3"},"content":{"rendered":"

Japan’s technology and energy sectors are increasingly exploring advanced artificial intelligence (AI) to streamline complex workflows in regulated industries. In a recent collaboration, NTT Docomo Business and Chugoku Electric Power have begun developing and testing a power‑sector‑specific large language model (LLM) based on NTT’s Japanese‑language AI platform, tsuzumi 2. This initiative aims to harness generative AI to improve both efficiency and accuracy in utility documentation and regulatory compliance processes.<\/p>

A Tailored AI for Japan’s Power Sector<\/strong><\/h3>

\u516c\u76ca\u4e8b\u696d\u3001\u7279\u306b\u96fb\u529b\u751f\u7523\u3068\u914d\u96fb\u306e\u5206\u91ce\u3067\u306f\u3001\u591a\u304f\u306e\u5831\u544a\u3001\u6587\u66f8\u4f5c\u6210\u3001\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u4f34\u3046\u3001\u975e\u5e38\u306b\u898f\u5236\u306e\u53b3\u3057\u3044\u74b0\u5883\u3067\u4e8b\u696d\u3092\u5c55\u958b\u3057\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u3088\u3046\u306a\u5206\u91ce\u3067\u306f\u3001\u6280\u8853\u7684\u306a\u5c02\u9580\u77e5\u8b58\u3068\u5206\u91ce\u7279\u6709\u306e\u8a9e\u5f59\u304c\u6700\u3082\u91cd\u8981\u3067\u3042\u308b\u305f\u3081\u3001\u5f93\u6765\u306e\u751f\u6210AI\u30e2\u30c7\u30eb\u3067\u306f\u6b63\u78ba\u306a\u7d50\u679c\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u304c\u96e3\u3057\u3044\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002.<\/p>

To address this, the partnership between NTT Docomo Business and Chugoku Electric Power is training a custom LLM using tsuzumi 2, a model optimized for Japanese language comprehension and generation. Rather than relying on general‑purpose AI alone, this model incorporates Chugoku Electric’s internal manuals, regulatory forms, and historical submissions as training data. The idea is to embed domain‑specific expertise directly into the model so it can generate content that adheres closely to real‑world energy sector rules and practices.<\/p>

\u3053\u3061\u3089\u3082\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\uff1a \u65e5\u672c\u304cAI\u30fb\u30ed\u30dc\u30c3\u30c8\u56fd\u5bb6\u6226\u7565\u7acb\u6848\u306e\u52d5\u304d\u3001\u30b5\u30fc\u30d3\u30b9\u30ed\u30dc\u30c3\u30c8\u683c\u5dee\u304c\u30bf\u30fc\u30b2\u30c3\u30c8\u306b<\/a><\/h4>

How It Works — Beyond Generic AI<\/strong><\/h3>

\u958b\u767a\u30d7\u30ed\u30bb\u30b9\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u8981\u7d20\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>

\u30ad\u30e5\u30ec\u30fc\u30b7\u30e7\u30f3\u3055\u308c\u305f\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u30c7\u30fc\u30bf<\/strong>: Chugoku Electric provides internal documentation — including manuals and past regulatory filings — that are frequently used in daily operations. This creates a rich, real‑world dataset tailored to power sector needs.<\/p>

\u30e2\u30c7\u30eb\u30d5\u30a1\u30a4\u30f3<\/strong>‑Tuning:<\/strong> NTT Docomo Business processes and formats this data for tsuzumi 2, ensuring it can be effectively learned and applied by the LLM.<\/p>

QA\u306b\u57fa\u3065\u304f\u30d9\u30f3\u30c1\u30de\u30fc\u30ad\u30f3\u30b0<\/strong>: The team creates a specialized QA set that assesses the model’s accuracy in both common queries and domain‑specific tasks. This evaluation guides iterative retraining to improve precision.<\/p>

\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306f\u3001\u81ea\u7136\u8a00\u8a9e\u3092\u7406\u89e3\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u8907\u96d1\u306a\u30a8\u30cd\u30eb\u30ae\u30fc\u696d\u754c\u306e\u6982\u5ff5\u3084\u898f\u5236\u3092\u5fe0\u5b9f\u306b\u89e3\u91c8\u3059\u308b\u30e2\u30c7\u30eb\u3092\u63d0\u4f9b\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>

AI\u3068\u898f\u5236\u30ef\u30fc\u30af\u30d5\u30ed\u30fc\u306e\u6a4b\u6e21\u3057<\/strong><\/h3>

One of the core challenges of applying AI in regulated industries — such as utilities, aviation, finance, or healthcare — is that generic AI models can misinterpret highly technical questions or generate responses that are plausible but incorrect. This can have serious consequences when compliance is involved. By embedding domain expertise directly into the training data, the new LLM aims to minimize these risks while enhancing productivity.<\/p>

NTT’s LLM technology has evolved specifically for Japanese language use cases, with earlier versions like tsuzumi already deployed for business applications. Beyond power utilities, such fine‑tuned models are gaining traction across sectors in Japan as companies seek to harness AI for document automation, customer service, and knowledge management.<\/p>

\u96fb\u529b\u696d\u754c\u306b\u3068\u3063\u3066\u306e\u610f\u5473<\/strong><\/h3>

NTT\u3068\u4e2d\u56fd\u96fb\u529b\u306e\u8a66\u9a13\u7684\u63d0\u643a\u306f\u3001\u696d\u754c\u306b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u30e1\u30ea\u30c3\u30c8\u3092\u3082\u305f\u3089\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>

    \n
  1. \u898f\u5236\u5f53\u5c40\u3078\u306e\u63d0\u51fa\u306e\u8fc5\u901f\u5316<\/strong>:\u3053\u306e\u696d\u754c\u306e\u4f01\u696d\u306f\u3001\u7d4c\u6e08\u7523\u696d\u7701\uff08METI\uff09\u306a\u3069\u306b\u63d0\u51fa\u3059\u308b\u66f8\u985e\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u77e5\u3089\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u306f\u3001LLM\u3092\u53d6\u5f97\u3057\u305f\u65b9\u304c\u65e9\u304f\u9054\u6210\u3067\u304d\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002.<\/li>\n
  2. \u54c1\u8cea\u7ba1\u7406\uff1a<\/strong> \u696d\u754c\u306e\u77e5\u8b58\u3092\u30e2\u30c7\u30eb\u306b\u7d44\u307f\u8fbc\u3080\u3053\u3068\u3067\u3001\u30a2\u30a6\u30c8\u30d7\u30c3\u30c8\u3092\u696d\u754c\u306e\u8981\u4ef6\u306b\u9069\u5408\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/li>\n
  3. \u5c02\u9580\u77e5\u8b58\u3078\u306e\u30a2\u30af\u30bb\u30b9<\/strong>:\u5c0f\u898f\u6a21\u306a\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u4f01\u696d\u3084\u5c02\u9580\u77e5\u8b58\u304c\u9650\u3089\u308c\u3066\u3044\u308b\u30c1\u30fc\u30e0\u306f\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u6df1\u3044\u624b\u7d9a\u304d\u7684\u77e5\u8b58\u306b\u7c21\u5358\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/li>\n
  4. \u30b3\u30b9\u30c8\u52b9\u7387\uff1a<\/strong> Long‑term deployment of such AI solutions can lower labor costs associated with documentation and compliance workflows — a key consideration in a highly regulated sector.<\/li>\n<\/ol>

    \u91cd\u8981\u30a4\u30f3\u30d5\u30e9\u306b\u304a\u3051\u308bAI\u306e\u5e83\u7bc4\u306a\u610f\u5473\u5408\u3044<\/strong><\/h3>

    The Japanese utility industry, like many developed nations, faces the challenge of modernization while ensuring safety, availability, and regulatory requirements. The adoption of sophisticated AI tools within the utility industry’s core business indicates a trend towards the development of AI-enhanced operational systems rather than purely automated systems.<\/p>

    \u4e16\u754c\u4e2d\u306e\u96fb\u529b\u696d\u754c\u3067\u306f\u3001\u30b0\u30ea\u30c3\u30c9\u6700\u9069\u5316\u3001\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u9700\u8981\u4e88\u6e2c\u3001\u6545\u969c\u691c\u51fa\u306b\u304a\u3044\u3066AI\u6280\u8853\u306e\u5fdc\u7528\u3092\u7a4d\u6975\u7684\u306b\u63a8\u9032\u3057\u3066\u3044\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u30c9\u30e1\u30a4\u30f3\u306b\u7279\u5316\u3057\u305fLLM\u306e\u5fdc\u7528\u306f\u6bd4\u8f03\u7684\u65b0\u3057\u304f\u3001\u767a\u5c55\u9014\u4e0a\u306e\u5206\u91ce\u3067\u3059\u3002\u6700\u8fd1\u306e\u5b66\u8853\u7814\u7a76\u3067\u306f\u3001\u8a3a\u65ad\u3084\u610f\u601d\u6c7a\u5b9a\u652f\u63f4\u306a\u3069\u3001\u96fb\u529b\u7db2\u95a2\u9023\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u5bfe\u3059\u308b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305fAI\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u306e\u6709\u52b9\u6027\u304c\u6307\u6458\u3055\u308c\u3066\u304a\u308a\u3001\u5c02\u9580\u7684\u306a\u8a2d\u5b9a\u306b\u304a\u3044\u3066\u306f\u3001\u4e00\u822c\u7684\u306aAI\u30e2\u30c7\u30eb\u3088\u308a\u3082\u7279\u5316\u3057\u305fAI\u30e2\u30c7\u30eb\u306e\u65b9\u304c\u52b9\u679c\u7684\u3067\u3042\u308b\u3053\u3068\u304c\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>

    \u65e5\u672c\u3067\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u4f01\u696d\u3084\u5b66\u8853\u30b0\u30eb\u30fc\u30d7\u304c\u3001\u65e5\u672c\u306e\u30d3\u30b8\u30cd\u30b9\u754c\u306e\u30cb\u30fc\u30ba\u3092\u3088\u308a\u6e80\u305f\u3059\u305f\u3081\u306b\u3001\u65e5\u672c\u8a9e\u306b\u6700\u9069\u5316\u3055\u308c\u305fLLM\u306e\u958b\u767a\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u307e\u3059\u3002.<\/p>

    \u4eca\u5f8c\u306e\u8ab2\u984c<\/strong><\/h3>

    \u96fb\u529b\u90e8\u9580\u306eLLM\u306e\u53ef\u80fd\u6027\u306f\u5927\u304d\u3044\u3082\u306e\u306e\u3001\u53d6\u308a\u7d44\u3080\u3079\u304d\u91cd\u8981\u306a\u554f\u984c\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>

    \u30c7\u30fc\u30bf\u54c1\u8cea\u3068\u30ac\u30d0\u30ca\u30f3\u30b9<\/strong>:LLM\u306e\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u306b\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306f\u3001\u4ee3\u8868\u7684\u3067\u6b63\u78ba\u3067\u3042\u308a\u3001\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u6e96\u62e0\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>

    \u30e2\u30c7\u30eb\u306e\u691c\u8a3c<\/strong>:\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9\u306e\u5206\u91ce\u3067\u306f\u3001\u8aa4\u89e3\u3092\u62db\u304f\u3088\u3046\u306a\u7d50\u679c\u3092\u51fa\u3055\u306a\u3044\u305f\u3081\u306b\u3001\u3057\u3063\u304b\u308a\u3068\u3057\u305f\u691c\u8a3c\u30d7\u30ed\u30bb\u30b9\u3092\u6301\u3064\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>

    \u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3<\/strong>:\u5831\u544a\u3084\u9867\u5ba2\u30b5\u30fc\u30d3\u30b9\u306a\u3069\u3001\u516c\u76ca\u4e8b\u696d\u306e\u3042\u3089\u3086\u308b\u5074\u9762\u3092\u542b\u3080\u3088\u3046\u306b\u30e2\u30c7\u30eb\u3092\u62e1\u5927\u3059\u308b\u305f\u3081\u306b\u306f\u3001\u30e2\u30c7\u30eb\u306e\u958b\u767a\u3068\u6539\u826f\u3092\u7d9a\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002.<\/p>

    \u524d\u5411\u304d\u306b<\/strong><\/h3>

    \u4e16\u754c\u306e\u516c\u76ca\u4e8b\u696d\u696d\u754c\u304cAI\u3092\u6d3b\u7528\u3057\u3066\u696d\u52d9\u3092\u5909\u9769\u3057\u59cb\u3081\u308b\u4e2d\u3001\u5206\u91ce\u5225\u306eLLM\u3092\u6d3b\u7528\u3057\u305f\u65e5\u672c\u306e\u30d1\u30a4\u30ed\u30c3\u30c8\u30fb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u3001\u898f\u5236\u7523\u696d\u304c\u30b8\u30a7\u30cd\u30ec\u30fc\u30c6\u30a3\u30d6AI\u3092\u6d3b\u7528\u3059\u308b\u660e\u78ba\u306a\u9053\u304c\u3042\u308b\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30d1\u30a4\u30ed\u30c3\u30c8\u30fb\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u6210\u529f\u3059\u308c\u3070\u3001\u4ed6\u306e\u516c\u76ca\u4e8b\u696d\u3084\u696d\u754c\u306b\u3068\u3063\u3066\u3082\u3001AI\u3092\u6d3b\u7528\u3057\u3066\u6700\u3082\u5c02\u9580\u7684\u306a\u5206\u91ce\u3067\u3082\u5c02\u9580\u5bb6\u306e\u3088\u3046\u306b\u8003\u3048\u308b\u305f\u3081\u306e\u30e2\u30c7\u30eb\u3068\u306a\u308b\u3067\u3057\u3087\u3046\u3002.<\/p>","protected":false},"excerpt":{"rendered":"

    Japan’s technology and energy sectors are increasingly exploring advanced artificial intelligence (AI) to streamline complex workflows in regulated industries. In a recent collaboration, NTT Docomo Business and Chugoku Electric Power have begun developing and testing a power‑sector‑specific large language model (LLM) based on NTT’s Japanese‑language AI platform, tsuzumi 2. This initiative aims to harness generative AI to improve both efficiency and accuracy in utility documentation and regulatory compliance processes.A Tailored AI for Japan’s Power SectorThe utility sector, particularly in the areas of electricity production and distribution, has to operate in a very regulated environment, involving a lot of reporting, document preparation, and compliance checks. Conventional generative AI models may find it […]<\/p>\n","protected":false},"author":7,"featured_media":27228,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"wprm-recipe-roundup-name":"","wprm-recipe-roundup-description":"","postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":""},"categories":[186,8098,85],"tags":[2168,8883,11070,11071,5834],"ppma_author":[572],"class_list":["post-27227","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ai","category-news-articles","category-tech","tag-ai-platform","tag-chugoku-electric-power","tag-data-quality","tag-generic-ai","tag-ntt-docomo-business"],"yoast_head":"\nNTT and Chugoku Electric Pioneer AI in Energy Sector<\/title>\n<meta name=\"description\" content=\"NTT and Chugoku Electric test a power-sector LLM to boost efficiency and accuracy in utility workflows using generative AI.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itbusinesstoday.com\/ja\/tech\/ai\/ntt-and-chugoku-electric-power-pioneer-power-sector-ai-with-custom-llm-trial\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NTT and Chugoku Electric Pioneer AI in Energy Sector\" \/>\n<meta property=\"og:description\" content=\"NTT and Chugoku Electric test a power-sector LLM to boost efficiency and accuracy in utility workflows using generative AI.\" \/>\n<meta property=\"og:url\" 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