2026-09-18PR TIMES

[Nippon Chikudenchi Co., Ltd.] Agreement concluded on power supply from grid-scale batteries during disasters

【日本蓄電池株式会社】災害時における系統用蓄電池による電力供給に関する協定締結について

Nippon Chikudenchi Co., Ltd., which has installed a grid-scale battery storage station in Masuda City, signed a disaster power-supply agreement with the city on 16 September 2026. In emergencies, a qualified electrical chief engineer can operate external outlets at the station to supply stored power for charging portable batteries, phones and laptops. The company says its planned station of about 8 MWh (8,146 kWh) could supply about 470 households for 72 hours.

  • planned
  • 島根県益田市
  • 8.1 MWh
  • 日本蓄電池株式会社
  • 益田市

Full account

  • Signing ceremony: 16 September 2026 (Reiwa 8), Wednesday, from 16:00, Masuda City Hall, 3rd floor, Conference Room 2; press release dated 17 September 2026.
  • Attendees: Masuda Mayor Hiroaki Yamamoto; Nippon Chikudenchi President & CEO Hidekazu Urushihara.
  • Nippon Chikudenchi has installed a grid-scale battery storage station within Masuda City; the agreement builds a disaster power-supply support system to strengthen local disaster preparedness and improve citizen services.
  • Station has external outlets (power strips); in emergencies a qualified person (electrical chief engineer) operates on site to supply stored power for portable batteries, smartphones, laptops and other communication/information devices.
  • A two-person household needs about 17 kWh for 72 hours in an emergency (about 5.6 kWh/day); the company's planned station of rated capacity about 8 MWh (8,146 kWh) could supply about 470 households for 72 hours.
  • Company: HQ Kasumigaseki Building 13F, 3-2-5 Kasumigaseki, Chiyoda-ku, Tokyo; business: development and operation of grid-scale storage stations. Three pillars: building storage stations (site finding, utility coordination, contractor and battery solution selection), operation and maintenance (statutory inspections, monitoring; 20+ year operation), and market creation.
  • Notes Japan relies on fossil-fuel thermal power for over 70% of supply; plans to sell storage stations as financial products; plans to start operation of 70 storage facilities by 2028.
日本語で読む

【日本蓄電池株式会社】災害時における系統用蓄電池による電力供給に関する協定締結について

  • 締結式：令和8年9月16日（水）16:00～、益田市役所3階第2会議室（リリースは2026年9月17日）
  • 出席者：益田市 山本浩章市長、日本蓄電池株式会社 代表取締役社長 漆原秀一
  • 同社は益田市内に系統用蓄電所を設置しており、協定により災害時の電力供給支援体制を構築し、地域防災体制強化と市民サービス向上を図る
  • 蓄電所は外部コンセント（電源タップ）を備え、非常時に有資格者（電気主任技術者）が現地で操作し、ポータブルバッテリー充電やスマートフォン、ノートパソコン等へ電力供給可能
  • 非常時の2人世帯72時間の必要電力量は約17kWh（1日約5.6kWh）。計画中の定格容量約8MWh（8,146kWh）の蓄電所で72時間約470世帯分を供給可能
  • 会社概要：東京都千代田区霞が関3-2-5 霞が関ビルディング13階、系統用蓄電所の開発・運用。事業の柱は蓄電所の構築、運用およびメンテナンス（20年以上の運用）、市場の創設
  • 日本の電力の70%以上が火力依存と指摘。蓄電所を金融商品として販売。2028年までに70箇所の蓄電施設の運転開始を予定