2026-09-19環境ビジネスオンライン
Grid-scale storage plant doubles biddable balancing capacity through "nega-posi operation" – Hirasol Energy
系統用蓄電所「ネガポジ運用」で入札可能な調整力2倍に ヒラソル・エナジー
Hirasol Energy announced on September 16 that its Izumizaki Village grid-scale storage plant in Nishishirakawa District, Fukushima Prefecture, passed pre-qualification for "nega-posi" operation in the balancing market. Against a rated output of 1,900kW, it was approved for a biddable capacity of 3,800kW, twice its rated output, by providing balancing power both by curtailing charging and by discharging.
- operating
- 福島県西白河郡泉崎村
- 1.9 MW
- ヒラソル・エナジー
Full account
- Hirasol Energy (Bunkyo-ku, Tokyo) announced on September 16 that its "Izumizaki Village Grid-Scale Storage Plant" (泉崎村系統用蓄電所), which it owns and operates in Nishishirakawa District, Fukushima Prefecture, passed pre-qualification for nega-posi operation in the balancing market (需給調整市場).
- Rated output: 1,900kW; approved deliverable capacity (bid volume cap): 3,800kW.
- By supplying balancing power both by suppressing charging and by discharging, the plant secures a bid volume twice its rated output.
- In the balancing market, besides "posi-watts" (sending power to the grid by discharging), "nega-watts" (curtailing planned charging) can also be used as balancing capacity (ΔkW); combining these is called nega-posi operation.
- Energy capacity (kWh) not stated.
日本語で読む
系統用蓄電所「ネガポジ運用」で入札可能な調整力2倍に ヒラソル・エナジー
- ヒラソル・エナジー（東京都文京区）は9月16日、福島県西白河郡で所有・運用する「泉崎村系統用蓄電所」が、需給調整市場のネガポジ運用に関する事前審査に合格したと発表。
- 定格出力1,900kWに対し、3,800kWの供出可能量（入札量上限）が認められた。
- 充電を抑制する方向と放電する方向の双方で調整力を供出し、定格出力の2倍の入札量を確保。
- 需給調整市場では、放電による「ポジワット」に加え、計画していた充電を抑える「ネガワット」も調整力（ΔkW）として活用でき、これらを組み合わせるのがネガポジ運用。
- 蓄電容量（kWh）の記載なし。