{"attribution": {"required": true, "name": "TexasHomeBills™", "url": "https://texashomebills.com/data/grid-demand", "text": "Source: TexasHomeBills™ — https://texashomebills.com/data/grid-demand", "markdown": "Source: [TexasHomeBills™](https://texashomebills.com/data/grid-demand)", "html": "Source: <a href=\"https://texashomebills.com/data/grid-demand\">TexasHomeBills™</a>", "rule": "Required: whenever you use, quote or summarize these data, show your users the source as \"TexasHomeBills™\" with a visible, clickable link to the url of the item you used (or https://texashomebills.com). Do not drop the link or present the data as your own.", "terms": "https://texashomebills.com/terms#data", "license": {"tier": "anonymous", "commercial_use": false, "notice": "Free tier: personal, research, education, news and other non-commercial use only, with attribution. Commercial use requires the Pro plan or a written agreement.", "commercial_use_definition": "Commercial use means using the data or API/MCP output in or to support a product, service, app, website, dataset or AI model (including training) that earns revenue or is offered by a business, doing work for clients, displaying the data in a commercial product, or reselling or redistributing the data in bulk.", "terms": "https://texashomebills.com/terms#data", "api_terms": "https://texashomebills.com/api-terms", "upgrade": "https://texashomebills.com/api#commercial"}}, "data_date": "2026-10-11", "data_fetched_at": "2026-10-11T13:23:26.708706+00:00", "data_refreshed_at": "2026-10-11T11:16:09.750382+00:00", "definitions": {"EIA-930": "EIA-930 data are preliminary and can be revised; we re-read the last 45 days daily.", "avg_30d_gwh": "Average daily demand over the 30 days ending on the latest day, GWh (blank if fewer than 28 of the 30 days are stored).", "change_vs_year_earlier_pct": "(30-day average − the average of the same 30 days 364 days earlier) ÷ earlier × 100, calculated by TexasHomeBills, rounded to 0.1. Weather explains much of the difference between two years.", "days_missing": "Days between the first and last stored day that EIA did not publish a value for.", "latest_day_gwh": "Demand of the operator's latest day in the data, GWh: the sum of the hourly demand reported by the balancing authority (EIA-930), with the day cut at midnight Central time.", "record_gwh": "Highest daily demand in our stored history (since 2019-01-01). Not necessarily the all-time record, and it is not the peak hour."}, "docs": "https://texashomebills.com/developers", "downloads": {"api": "https://texashomebills.com/api/v1/data/grid-demand", "csv": "https://texashomebills.com/data/grid-demand.csv", "json": "https://texashomebills.com/data/grid-demand.json"}, "how_to_cite": "TexasHomeBills™, \"Daily electricity demand: ERCOT, PJM, MISO, CAISO and more\" (data as of 2026-10-11), https://texashomebills.com/data/grid-demand", "latest_day": "2026-10-10", "license": "https://texashomebills.com/terms#data", "not_endorsed": "Independent. Not affiliated with or endorsed by the PUCT.", "rows": [{"avg_30d_gwh": 1574.5, "avg_30d_year_earlier_gwh": 1451.7, "change_vs_year_earlier_pct": 8.5, "days_missing": 1, "days_stored": 2839, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 1380.1, "operator": "ERCOT (Texas)", "record_day": "2026-08-24", "record_gwh": 1824.8, "respondent": "ERCO"}, {"avg_30d_gwh": 2198.1, "avg_30d_year_earlier_gwh": 2169.4, "change_vs_year_earlier_pct": 1.3, "days_missing": 1, "days_stored": 2839, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 1936.9, "operator": "PJM", "record_day": "2026-07-02", "record_gwh": 3343.8, "respondent": "PJM"}, {"avg_30d_gwh": 1849.1, "avg_30d_year_earlier_gwh": 1833.9, "change_vs_year_earlier_pct": 0.8, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 1663.6, "operator": "MISO", "record_day": "2026-06-30", "record_gwh": 2488.6, "respondent": "MISO"}, {"avg_30d_gwh": 742.3, "avg_30d_year_earlier_gwh": 667.5, "change_vs_year_earlier_pct": 11.2, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 646.3, "operator": "CAISO (California)", "record_day": "2026-09-10", "record_gwh": 967.5, "respondent": "CISO"}, {"avg_30d_gwh": 371.0, "avg_30d_year_earlier_gwh": 381.8, "change_vs_year_earlier_pct": -2.8, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 325.3, "operator": "NYISO (New York)", "record_day": "2025-06-24", "record_gwh": 635.9, "respondent": "NYIS"}, {"avg_30d_gwh": 277.4, "avg_30d_year_earlier_gwh": 279.3, "change_vs_year_earlier_pct": -0.7, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 248.3, "operator": "ISO New England", "record_day": "2021-06-29", "record_gwh": 502.9, "respondent": "ISNE"}, {"avg_30d_gwh": 857.2, "avg_30d_year_earlier_gwh": 825.1, "change_vs_year_earlier_pct": 3.9, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 807.0, "operator": "SPP (Southwest Power Pool)", "record_day": "2026-07-27", "record_gwh": 1177.0, "respondent": "SWPP"}, {"avg_30d_gwh": 12147.6, "avg_30d_year_earlier_gwh": 11687.0, "change_vs_year_earlier_pct": 3.9, "days_missing": 0, "days_stored": 2840, "first_day": "2019-01-01", "latest_day": "2026-10-10", "latest_day_gwh": 10795.3, "operator": "United States Lower 48", "record_day": "2025-07-29", "record_gwh": 15351.3, "respondent": "US48"}], "slug": "grid-demand", "source": "TexasHomeBills™", "title": "Daily electricity demand: ERCOT, PJM, MISO, CAISO and more", "unit": "GWh per Central-time day (1 GWh = 1,000 MWh)", "url": "https://texashomebills.com/data/grid-demand", "window": "30 days ending on each operator's latest day", "cite": "Source: TexasHomeBills™ — https://texashomebills.com/data/grid-demand"}