2026-10-06トレーダーズ・ウェブ

Keiyo Gas falls for second day; enters domestic grid-scale battery storage business

京葉ガス－続落　国内系統用蓄電池事業へ参入

Keiyo Gas announced on October 5 that it opened its first domestic grid-scale battery storage station in Isesaki, Gunma Prefecture, with full-scale operation starting October 1, 2026. The move is part of its 2025-2027 medium-term management plan and follows its June 2025 investment in a US grid battery project; the share price continued to fall, with limited positive impact.

  • operating
  • 群馬県伊勢崎市
  • 京葉ガス

Full account

  • Keiyo Gas (9539.T) shares fell for a second straight day (report dated 2026/10/05, 14:55).
  • On the 5th, the company announced it opened its first domestic grid-scale battery storage station in Isesaki City, Gunma Prefecture, with full-scale operation from October 1, 2026.
  • The project is part of renewable-energy-related business under its "Medium-Term Management Plan 2025-2027".
  • Purpose: respond to growing power supply-demand balancing needs as renewable energy adoption expands.
  • Follows its investment/participation in a US grid-scale battery project announced in June 2025; now entering the business domestically too.
  • Positive impact on the share price is limited.
  • The article gives no capacity (MW/MWh), cost, or grid operator details.
日本語で読む

京葉ガス－続落　国内系統用蓄電池事業へ参入

  • 京葉ガス<9539.T>が続落（2026/10/05 14:55配信）。
  • 同社は5日、群馬県伊勢崎市において同社初となる国内系統用蓄電所を開設し、2026年10月1日より本格稼働を開始したと発表。
  • 「中期経営計画2025-2027」に基づく再生可能エネルギー関連事業の一環。
  • 目的：再エネ導入拡大に伴い高まる電力需給調整ニーズへの対応。
  • 2025年6月に公表した米国の系統用蓄電池プロジェクトへの出資・参画に続き、国内でも参入。
  • 株価への好影響は限定的。
  • 出力・容量・事業費等の記載なし。

Attached to: 伊勢崎市・京葉ガス・8MWh系統用蓄電所（仮称） →