2026-02-25YUKU NEWS

[Grid-scale battery business] Cosmo Energy HD to build battery storage stations on former service station sites in Nagasaki and Miyagi

【系統用蓄電池事業】コスモエネルギーHD、長崎・宮城のSS跡地に蓄電所を建設

Cosmo Energy Holdings announced it will build grid-scale battery storage stations on former service station sites in Matsuura, Nagasaki and Sendai, Miyagi, with combined output of about 4MW. Operations are planned to start in phases from FY2027, and the Matsuura project was selected for METI's FY2025 grid battery subsidy programme.

  • planned
  • 長崎県松浦市、宮城県仙台市
  • 4 MW
  • コスモエネルギーホールディングス

Full account

  • Article dated 2026/2/25; based on Cosmo Energy Holdings' official announcement.
  • Cosmo Energy Holdings will build grid-scale battery storage stations on former service station sites in Matsuura City, Nagasaki Prefecture and Sendai City, Miyagi Prefecture.
  • Combined output of the two sites: approx. 4MW; operation to begin in phases from FY2027.
  • Sites are idle group-owned land; access to transmission/distribution facilities and roads already confirmed, reducing new land acquisition burden and reusing them as community-rooted energy assets.
  • The Matsuura project was selected under METI's FY2025 grid-scale battery deployment support programme (系統用蓄電池導入支援事業).
  • The group has previously built battery demonstration facilities at 4 locations, accumulating know-how in energy management systems and market operation; these two projects extend that into commercial grid-scale storage.
  • With changing demand for petroleum products, converting service station assets nationwide into storage stations or EV charging could become a new business leveraging the existing network.
  • Article notes the capacity (MWh) of each facility, operator, and scale of further expansion are points to watch (not disclosed).
日本語で読む

【系統用蓄電池事業】コスモエネルギーHD、長崎・宮城のSS跡地に蓄電所を建設

  • 2026/2/25付記事。出典はコスモエネルギーホールディングス公式発表。
  • コスモエネルギーホールディングスが長崎県松浦市と宮城県仙台市のサービスステーション跡地に系統用蓄電所を建設。
  • 2ヵ所合計の出力は約4MW、2027年度から順次運転開始予定。
  • 対象はグループの遊休地で、送配電設備や道路へのアクセスを確認済みの既存拠点を転用し、新たな土地取得の負担を抑え、地域に根差したエネルギー資産へ再活用。
  • 松浦市の案件は2025年度の経済産業省による系統用蓄電池導入支援事業に採択。
  • 同社グループはこれまで4ヵ所で蓄電池の実証設備を整備し、エネルギーマネジメントシステムや市場運用の知見を蓄積。今回の2案件はその成果を商用系統用蓄電所へ展開するもの。
  • 石油製品の需要構造が変化するなか、全国のSS関連資産を蓄電所やEV充電などへ転換できれば既存ネットワークを生かした新規事業となる。
  • 今後は各設備の容量、運用事業者、追加展開の規模が焦点（未公表）。