2026-10-23Yahoo!ニュース - Yahoo! JAPAN

[Grid-scale battery storage] Facilities balancing power supply and demand surge on solar growth and data-center demand, but trouble also arises (SALA Hamamatsu Battery Storage Station)

【系統用蓄電所】太陽光発電やデータセンター特需に伴い電力需給調整施設が急増しトラブルも（サーラ浜松蓄電所）

Grid-scale battery storage stations are surging nationwide and in Shizuoka, including SALA Energy's NAS-battery SALA Hamamatsu Battery Storage Station, which opened in October 2025 to absorb surplus solar power. A large storage project planned in a residential area of Shimizu Ward, Shizuoka City, was cancelled after resident opposition. Shizuoka City is now moving to create siting rules, and Kosai City has already added grid batteries to its ordinance.

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静岡県浜松市
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SALA Energy (supplies gas in western Shizuoka incl. Hamamatsu) opened the SALA Hamamatsu Battery Storage Station at its supply center in October 2025.
Uses NAS (sodium-based) batteries; each container holds multiple module batteries; capacity equals one day's use by 6,000 ordinary households.
Connected directly to transmission lines; charges in surplus hours and discharges at peak.
Background: Hamamatsu has been No.1 in Japan for solar installations (count and volume) for 10 straight years since FY2015, leading to surplus solar power (Ikuhei Ikeda, SALA Energy Power Business Promotion Dept.).
Noise measures: exhaust ducts curved so sound exits sideways, reducing noise outside the site (industrial zone); converters and cooling make operating noise.
Agency for Natural Resources and Energy: grid-connected storage rose from 80,000 kW two years ago to 1.28 million kW in June 2026, 16x in two years; connection applications rose from about 40 in FY2022 to about 3,900 in FY2025, nearly 100x.
Prof. Masashi Okubo (Waseda University): lithium-ion battery prices fell to one-fifth over 10 years; data-center growth from smartphones and AI also drives demand for large storage; numbers likely to keep rising.
Shimizu Ward, Shizuoka City (Okitsu): a large storage station planned in June on a former factory site in a quiet residential area; over 200 attended an August briefing, raising noise and landscape concerns; residents Kimihiro Sugiyama and Yosuke Yamazaki led a petition with over 1,000 supporters.
On October 8 the developer (unnamed) announced it would not invest in some large projects, cancelling the plan; said not due to opposition but residents' feelings were considered.
Shizuoka City Council: Councillor Wataru Yamanashi asked about an ordinance; Mayor Namba said legal siting regulations are insufficient, an ordinance is a strong option, and warned of a 'second mega-solar problem'. The state regulates safety but not siting.
Kosai City: from April 2026 (Reiwa 8) grid batteries added to its ordinance (previously covering solar etc.); requires resident briefings, agreements on request; non-compliance with recommendations leads to publication of operator name and reporting to national/prefectural government (Kazuki Ajioka, Environment Division).

日本語で読む

【系統用蓄電所】太陽光発電やデータセンター特需に伴い電力需給調整施設が急増しトラブルも（サーラ浜松蓄電所）

浜松市など県西部でガス供給を行うサーラエナジーが、2025年10月に供給センター内にサーラ浜松蓄電所を開設。
NAS電池（ナトリウム使用）を採用、1コンテナに複数のモジュール電池。容量は一般家庭6000世帯分の1日の使用量に相当。
送電線に直接接続し、余剰時に充電・需要時に放電。
背景：浜松市は2015年度から10年連続で太陽光発電の導入件数・導入量が日本一で、余剰電力が課題（電力事業推進部池田郁平さん）。
騒音対策：ダクトをカーブさせ排気口を横向きにし敷地外に音が出にくい構造（工業地域）。
資源エネルギー庁：系統接続蓄電所は2年前8万kWから2026年6月128万kWへ16倍。契約申込は2022年度約40件→2025年度約3900件と100倍近く。
早稲田大学大久保將史教授：リチウムイオン電池価格はここ10年で5分の1。データセンター増加も需要要因で、数は増える一方との見方。
静岡市清水区興津の住宅街の工場跡地で6月に大規模蓄電所計画。8月の住民説明会に200人以上、騒音・景観の懸念。杉山公啓さん・山崎洋佑さんらの反対署名に1000人以上。
10月8日、事業者が「一部大型案件については投資を実施しない」と発表し中止。反対運動が理由ではないが住民感情を考慮したと説明。
静岡市議会で山梨渉議員が質問、難波市長は法令規制が不十分とし条例制定も有力案として制度導入を急ぐ、「第二のメガソーラーの問題」になりかねないと発言。国は安全規制のみで立地制限なし。
湖西市：令和8年4月から系統用蓄電池を条例対象に追加。住民説明会開催、要望時の協定締結を求め、勧告不服従時は事業者名・勧告内容を公表し国・県に情報提供（環境課味岡和季さん）。

Attached to: サーラ浜松蓄電所 →