{
  "title": "2.2 GW of BESS reached commercial operation in ERCOT in Q3 2026, the most of any quarter",
  "subtitle": "BESS capacity reaching commercial operation in ERCOT by quarter and duration (GW)",
  "chart_type": "stacked_bar",
  "source": "ERCOT, Modo Energy",
  "note": "Duration is energy capacity divided by rated power. Excludes one 10 MW unit with no reported energy capacity (Q1 2026).",
  "axes": {
    "x": {
      "label": "q",
      "type": "category"
    },
    "y": {
      "label": null,
      "type": "number",
      "unit": "GW"
    }
  },
  "data": [
    {
      "q": "Q1 2022",
      "<1.5h": 0.05,
      "1.5-2.5h": 0.101,
      ">2.5h": 0.0
    },
    {
      "q": "Q2 2022",
      "<1.5h": 0.33,
      "1.5-2.5h": 0.05,
      ">2.5h": 0.0
    },
    {
      "q": "Q3 2022",
      "<1.5h": 0.283,
      "1.5-2.5h": 0.161,
      ">2.5h": 0.0
    },
    {
      "q": "Q4 2022",
      "<1.5h": 0.175,
      "1.5-2.5h": 0.05,
      ">2.5h": 0.0
    },
    {
      "q": "Q1 2023",
      "<1.5h": 0.02,
      "1.5-2.5h": 0.0,
      ">2.5h": 0.2
    },
    {
      "q": "Q2 2023",
      "<1.5h": 0.045,
      "1.5-2.5h": 0.2,
      ">2.5h": 0.0
    },
    {
      "q": "Q3 2023",
      "<1.5h": 0.307,
      "1.5-2.5h": 0.39,
      ">2.5h": 0.0
    },
    {
      "q": "Q4 2023",
      "<1.5h": 0.221,
      "1.5-2.5h": 0.582,
      ">2.5h": 0.0
    },
    {
      "q": "Q1 2024",
      "<1.5h": 0.07,
      "1.5-2.5h": 0.192,
      ">2.5h": 0.0
    },
    {
      "q": "Q2 2024",
      "<1.5h": 0.441,
      "1.5-2.5h": 0.449,
      ">2.5h": 0.0
    },
    {
      "q": "Q3 2024",
      "<1.5h": 0.645,
      "1.5-2.5h": 0.587,
      ">2.5h": 0.0
    },
    {
      "q": "Q4 2024",
      "<1.5h": 1.119,
      "1.5-2.5h": 0.398,
      ">2.5h": 0.0
    },
    {
      "q": "Q1 2025",
      "<1.5h": 0.07,
      "1.5-2.5h": 0.39,
      ">2.5h": 0.0
    },
    {
      "q": "Q2 2025",
      "<1.5h": 0.586,
      "1.5-2.5h": 1.097,
      ">2.5h": 0.0
    },
    {
      "q": "Q3 2025",
      "<1.5h": 0.02,
      "1.5-2.5h": 1.935,
      ">2.5h": 0.099
    },
    {
      "q": "Q4 2025",
      "<1.5h": 0.438,
      "1.5-2.5h": 1.405,
      ">2.5h": 0.013
    },
    {
      "q": "Q1 2026",
      "<1.5h": 0.182,
      "1.5-2.5h": 0.899,
      ">2.5h": 0.0
    },
    {
      "q": "Q2 2026",
      "<1.5h": 0.02,
      "1.5-2.5h": 1.103,
      ">2.5h": 0.376
    },
    {
      "q": "Q3 2026",
      "<1.5h": 0.09,
      "1.5-2.5h": 1.94,
      ">2.5h": 0.127
    }
  ]
}