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  "path": "/2026/05/06/ess-adds-8-5-gwh-of-sodium-ion-to-its-battery-storage-portfolio/",
  "publishedAt": "2026-05-06T23:15:37.000Z",
  "site": "https://electrek.co",
  "tags": [
    "News",
    "ESS",
    "more…"
  ],
  "textContent": "ESS is moving beyond its long-duration energy storage roots into the crowded short- and medium-duration battery storage market – but not with lithium.\n\nmore…",
  "title": "ESS adds 8.5 GWh of sodium-ion to its battery storage portfolio"
}