2026-04-01ブルースカイエナジー株式会社

Notice of Registration as a Specified Wholesale Supplier (Aggregator): Advancing a 'Multi-Aggregator Strategy' for Developing 100 Battery Storage Sites Nationwide

特定卸供給事業者(アグリゲーター)認定のお知らせ～全国100カ所の蓄電所開発に向けた「マルチアグリゲーター戦略」を推進～

Blue Sky Energy was recognized as a specified wholesale supplier (aggregator) under the Electricity Business Act on April 1, 2026, to support its plan to develop 100 grid-scale battery storage sites nationwide by 2029. Its first storage site began commercial operation in Makinohara, Shizuoka on March 23, 2026. The company pursues a 'multi-aggregator strategy', selecting the aggregator, battery system and EMS independently for each site while also building in-house trading capability.

  • operating (first site); 100 sites planned by 2029
  • 静岡県牧之原市
  • ブルースカイエナジー株式会社

Full account

  • Blue Sky Energy Co., Ltd. filed with the Minister of Economy, Trade and Industry under the specified wholesale supply scheme of the Electricity Business Act and was recognized as a specified wholesale supplier (aggregator) as of April 1, 2026.
  • Plans to develop 100 grid-scale battery storage sites nationwide by 2029; aggregation functions (market trade execution, supply-demand balancing, grid operation) deemed essential to operate the fleet.
  • First storage site began commercial operation on March 23, 2026 in Makinohara, Shizuoka Prefecture, an area with abundant solar, using surplus local renewable power and supporting grid stability. No capacity disclosed.
  • 'Multi-aggregator' / 'cherry-picking' strategy: aggregator, battery system and EMS (control system) selected independently per site rather than a single package; the company also holds in-house trading decision capability for flexibility and risk diversification.
  • Holding both aggregator recognition and retail electricity supplier registration, the group can offer the full battery value chain 'development → EPC → O&M → aggregation' in-house.
  • Company profile: does solar repowering (100 sites, over 150MW track record) and storage EPC/development; 24 bases nationwide; also targets 50+ grid-scale storage sites by 2027 and solar-co-located batteries.
  • HQ: Nihonbashi 3-9-1, Chuo-ku, Tokyo; representative 上原美樹 (Miki Uehara); founded October 2012; capital 40 million yen; unlisted.
日本語で読む

特定卸供給事業者(アグリゲーター)認定のお知らせ～全国100カ所の蓄電所開発に向けた「マルチアグリゲーター戦略」を推進～

  • ブルースカイエナジー株式会社は電気事業法に基づき経済産業大臣へ特定卸供給事業者（アグリゲーター）の届出を行い、2026年4月1日付で認定。
  • 2029年までに全国100カ所の系統用蓄電所の開発を計画。電力市場での取引執行・需給調整・系統運用を担うアグリゲーション機能が不可欠とする。
  • 2026年3月23日、静岡県牧之原市で第一号蓄電所の商業運転を開始。太陽光発電が盛んな地域で余剰再エネを活用し系統安定化に貢献。容量は記載なし。
  • 「マルチアグリゲーター戦略」「いいとこどり戦略」：蓄電所ごとにアグリゲーター、蓄電池システム、EMSを独立して選定。自社でも電力売買の判断機能を持ち、柔軟性とリスク分散を両立。
  • アグリゲーター認定と小売電気事業者登録を併せ持ち、「開発→EPC→O&M→アグリゲーション」を自社グループ内で一貫提供する体制を確立。
  • 会社概要：リパワリングは全国100か所、150MW以上の実績。全国24か所の拠点。2027年までに全国50か所以上の系統用蓄電所開発、太陽光併設型蓄電池の開発も推進。
  • 所在地：東京都中央区日本橋三丁目9-1 日本橋三丁目スクエア2階、代表者：上原美樹、設立：2012年10月、資本金4000万円、未上場。

Attached to: 静岡県牧之原市にて第一号蓄電所 →