{
  "series": "storage",
  "name": "EnergyIndex Storage",
  "source": "EIA API v2 · fueltypeid=HPS · location=US · sectorid=99",
  "base_year": null,
  "latest_period": "2026-07",
  "latest_generation_gwh": -524,
  "share_of_us_generation_pct": -0.12,
  "ttm_generation_gwh": -6120,
  "ttm_yoy_change_pct": -10.2,
  "index_level": null,
  "history": [
    {
      "period": "2023-08",
      "generation_gwh": -653,
      "share_pct": -0.15
    },
    {
      "period": "2023-09",
      "generation_gwh": -553,
      "share_pct": -0.15
    },
    {
      "period": "2023-10",
      "generation_gwh": -372,
      "share_pct": -0.11
    },
    {
      "period": "2023-11",
      "generation_gwh": -347,
      "share_pct": -0.11
    },
    {
      "period": "2023-12",
      "generation_gwh": -514,
      "share_pct": -0.15
    },
    {
      "period": "2024-01",
      "generation_gwh": -414,
      "share_pct": -0.11
    },
    {
      "period": "2024-02",
      "generation_gwh": -404,
      "share_pct": -0.13
    },
    {
      "period": "2024-03",
      "generation_gwh": -349,
      "share_pct": -0.11
    },
    {
      "period": "2024-04",
      "generation_gwh": -338,
      "share_pct": -0.11
    },
    {
      "period": "2024-05",
      "generation_gwh": -284,
      "share_pct": -0.08
    },
    {
      "period": "2024-06",
      "generation_gwh": -579,
      "share_pct": -0.15
    },
    {
      "period": "2024-07",
      "generation_gwh": -639,
      "share_pct": -0.15
    },
    {
      "period": "2024-08",
      "generation_gwh": -798,
      "share_pct": -0.19
    },
    {
      "period": "2024-09",
      "generation_gwh": -637,
      "share_pct": -0.18
    },
    {
      "period": "2024-10",
      "generation_gwh": -439,
      "share_pct": -0.13
    },
    {
      "period": "2024-11",
      "generation_gwh": -490,
      "share_pct": -0.15
    },
    {
      "period": "2024-12",
      "generation_gwh": -481,
      "share_pct": -0.13
    },
    {
      "period": "2025-01",
      "generation_gwh": -467,
      "share_pct": -0.12
    },
    {
      "period": "2025-02",
      "generation_gwh": -410,
      "share_pct": -0.12
    },
    {
      "period": "2025-03",
      "generation_gwh": -399,
      "share_pct": -0.12
    },
    {
      "period": "2025-04",
      "generation_gwh": -259,
      "share_pct": -0.08
    },
    {
      "period": "2025-05",
      "generation_gwh": -271,
      "share_pct": -0.08
    },
    {
      "period": "2025-06",
      "generation_gwh": -420,
      "share_pct": -0.11
    },
    {
      "period": "2025-07",
      "generation_gwh": -486,
      "share_pct": -0.11
    },
    {
      "period": "2025-08",
      "generation_gwh": -568,
      "share_pct": -0.14
    },
    {
      "period": "2025-09",
      "generation_gwh": -457,
      "share_pct": -0.12
    },
    {
      "period": "2025-10",
      "generation_gwh": -513,
      "share_pct": -0.15
    },
    {
      "period": "2025-11",
      "generation_gwh": -610,
      "share_pct": -0.18
    },
    {
      "period": "2025-12",
      "generation_gwh": -462,
      "share_pct": -0.12
    },
    {
      "period": "2026-01",
      "generation_gwh": -515,
      "share_pct": -0.13
    },
    {
      "period": "2026-02",
      "generation_gwh": -539,
      "share_pct": -0.16
    },
    {
      "period": "2026-03",
      "generation_gwh": -591,
      "share_pct": -0.17
    },
    {
      "period": "2026-04",
      "generation_gwh": -463,
      "share_pct": -0.14
    },
    {
      "period": "2026-05",
      "generation_gwh": -409,
      "share_pct": -0.12
    },
    {
      "period": "2026-06",
      "generation_gwh": -468,
      "share_pct": -0.12
    },
    {
      "period": "2026-07",
      "generation_gwh": -524,
      "share_pct": -0.12
    }
  ]
}