Log in
By report month, MM/YY. Observed peak is the sum of each load’s own highest value, not a simultaneous peak.
| Report month | Approved MW | Observed peak MW | Observed ÷ approved | Source |
|---|---|---|---|---|
| August 2026 | 9,456 | 4,316 | 45.6% | ERCOT PDF |
| July 2026 | 9,456 | 4,370 | 46.2% | ERCOT PDF |
| June 2026 | 8,926 | 3,966 | 44.4% | ERCOT PDF |
| May 2026 | 9,062 | 4,145 | 45.7% | ERCOT PDF |
| April 2026 | 9,012 | 4,006 | 44.5% | ERCOT PDF |
| March 2026 | 9,042 | 4,008 | 44.3% | ERCOT PDF |
| February 2026 | 9,043 | 4,037 | 44.6% | ERCOT PDF |
| January 2026 | 8,787 | 4,049 | 46.1% | ERCOT PDF |
| December 2025 * | 8,787 | 3,349 | 38.1% | ERCOT PDF |
| November 2025 * | 7,502 | 3,827 | 51.0% | ERCOT PDF |
| October 2025 * | 7,502 | 3,960 | 52.8% | ERCOT PDF |
| September 2025 * | 7,502 | 4,126 | 55.0% | ERCOT PDF |
| August 2025 | 7,502 | 3,694 | 49.2% | ERCOT PDF |
| July 2025 | 7,150 | 3,820 | 53.4% | ERCOT PDF |
| June 2025 | 6,874 | 3,605 | 52.4% | ERCOT PDF |
| May 2025 | 6,874 | 3,489 | 50.8% | ERCOT PDF |
| April 2025 | 6,779 | 3,691 | 54.4% | ERCOT PDF |
From ERCOT’s Monthly Operational Overview, slide “Loads Approved to Energize – Observations”. Approved MW: large loads (75 MW or more) with Approval to Energize from ERCOT Operations. Observed peak: ERCOT’s non-simultaneous monthly peak consumption of those loads, the sum of each load’s own maximum in the month; it is not the grid’s simultaneous peak. The last column is our division, rounded to 0.1. ERCOT published this slide from April 2025; earlier months are not available and are not estimated.
* ERCOT’s own sentence names the following month for this report (for example the September 2025 report says “October 2025”); we list it under the month of the report.
| ERCOT document | GW | Data centers | As of |
|---|---|---|---|
| Jul 29, 2026 | 474 | ~90% | as of June 2026 |
| May 24, 2026 | 438 | — | deck date |
| Apr 1, 2026 | 410 | ~87% | as of March 26, 2026 |
GW of large-load interconnection requests ERCOT says it is tracking, from its presentations to the Texas Senate (Apr 1 and Jul 29, 2026) and Board (item 8, posted May 24, 2026). A request is not an approval and not load that exists. “—” means the document does not give the data-center share in text. ERCOT’s breakdown of requests by study stage is a chart picture in its reports; we do not read pictures, so no stage breakdown is shown. ERCOT’s documents we read give no other split by load type.
| Class | Projects | GW |
|---|---|---|
| Base load (conditional) | 204 | 66.4 |
| Studied load (conditional) | 158 | 127.9 |
| Excluded from Batch Zero | 373 | 302.2 |
| Total (our sum) | 735 | 496.5 |
ERCOT: Batch Zero is ERCOT’s one-time transitional study of large loads that want to interconnect. The classification is conditional: ERCOT is verifying eligibility and auditing data centers and crypto-mining loads, with its report due to the PUCT by Dec 10, 2026. The same deck’s chart labels studied load 125.4 GW while its text says 127.9 GW; we show the text figure.
Highest hourly demand of the year, MW. * = preliminary (lighter bar).
| Year | MW | When |
|---|---|---|
| 2026 | 91,089 | July 22; preliminary |
| 2025 | 80,560 | February |
| 2024 | 85,425 | August |
| 2023 | 85,508 | August |
| 2022 | 80,148 | July |
| 2021 | 73,687 | August |
| 2020 | 74,376 | August |
| 2019 | 74,820 | August |
From ERCOT’s yearly peak demand archive (back to 2000 in the CSV and JSON). ERCOT uses the integrated hourly system load; records are unofficial until final settlement and can change slightly. For July 22, 2026, ERCOT’s archive page lists 91,089 MW, while its 2026 records page and July Operational Overview list 91,134 MW; both are published by ERCOT, and the card above uses 91,134 MW. ERCOT →
| Summer | ERCOT adjusted MW | TSP provided MW | Highest actual so far MW | Actual vs adjusted |
|---|---|---|---|---|
| 2025 | 85,759 | 93,655 | 83,679 Aug 18, 2025 · 4 of 4 months |
-2.4% |
| 2026 | 94,650 | 109,031 | 91,134 Jul 22, 2026 · 3 of 4 months |
-3.7% |
| 2027 | 104,295 | 138,193 | — | — |
| 2028 | 121,543 | 173,231 | — | — |
| 2029 | 128,851 | 196,678 | — | — |
| 2030 | 138,944 | 208,014 | — | — |
| 2031 | 144,522 | 218,420 | — | — |
Net coincident summer peak forecast, MW, from ERCOT’s “Summer and Winter Peaks” file: “TSP provided” is what transmission service providers submitted, “ERCOT adjusted” is ERCOT’s own adjustment. “Highest actual so far” is the largest of the June–September monthly peaks we have from ERCOT’s Monthly Operational Overviews (preliminary values; the number of months reported is shown), so a year with fewer than 4 months is incomplete. The comparison is a division, rounded to 0.1, and says nothing about why the forecast and the actual differ. A newer forecast, when ERCOT posts one, will be added next to this one. ERCOT XLSX →
| Winter | ERCOT adjusted MW | TSP provided MW |
|---|---|---|
| 2025-2026 | 78,557 | 86,060 |
| 2026-2027 | 90,192 | 106,956 |
| 2027-2028 | 111,711 | 143,879 |
| 2028-2029 | 134,192 | 162,552 |
| 2029-2030 | 152,109 | 187,795 |
| 2030-2031 | 161,916 | 201,054 |
| 2031-2032 | 169,087 | 212,268 |
TexasHomeBills started saving these numbers on Oct 9, 2026. Each time ERCOT publishes a new report or presentation we store its numbers with the document’s date and URL and never overwrite an earlier report; if ERCOT revises a number, we keep the previous one. Today we hold 155 values from 38 ERCOT documents. Months before our start are read back from ERCOT’s own earlier reports, as far back as ERCOT states them in text (April 2025 for large loads); we do not estimate months ERCOT did not report.
| Date | Item | Project |
|---|---|---|
| Oct 8, 2026 | Large Load Interconnection Standards §25.194 | 58481 |
| Jun 18, 2026 | PUCT Approves New ERCOT Process to Manage Electricity Requests from Data Centers, Large Power Users | — |
| Apr 15, 2026 | Net Metering Arrangements Involving a Large Load Customer Co-Located with an Existing Generation Resource §25.205 | 58479 |
| Mar 1, 2026 | ERCOT Large Load Forecasting Criteria §25.370 | 58480 |
Items on the Public Utility Commission of Texas’s news-release and recent-rule-changes pages whose project number is 58479, 58480 or 58481 or whose title mentions large loads or data centers (we tag them from the title). The date is the date the PUCT lists. Rule titles are the PUCT’s; read the PUCT page for status and text. PUCT → · Texas Senate Bill 6 (2025) →
Your Texas electricity bill has an energy charge set by your retail plan and delivery charges set by your utility under rates the PUCT regulates. We have no source that measures how data-center or other large-load demand has changed either charge, so we make no claim that it has or will. What the sources show side by side:
ERCOT does not publish a recurring data file of large loads, so we read the numbers ERCOT states in the text of its documents: the Monthly Operational Overview PDFs (linked from ERCOT’s Board page), the peak demand records pages, the Long-Term Load Forecast “Summer and Winter Peaks” file, and a fixed list of Board and Senate presentations. We store each number with its document URL and never fill a gap. Figures that ERCOT only shows in charts are not read. Large load means 75 MW or more in ERCOT’s Batch Zero documents.
ERCOT does not publish data-center consumption on its own. It reports large loads (75 MW or more) of all kinds: 9,456 MW had Approval to Energize in its August 2026 report, and the observed non-simultaneous peak consumption of those loads that month was 4,316 MW. ERCOT says about 90% of the large-load requests it is tracking are data centers (a statement about requests, not about load that exists).
In ERCOT’s Batch Zero documents, a Large Load is a load of 75 MW or greater seeking to connect to the ERCOT system, for example a data center or a cryptocurrency-mining facility.
We do not have a source that measures that, so we do not say so. This page lists what ERCOT, the EIA and the PUCT publish. Your bill depends on your plan’s energy price, your utility’s delivery charges and your usage.
91,134 MW on Jul 22, 2026, reported as preliminary by ERCOT; the previous record was 85,508 MW (August 2023). ERCOT’s records are unofficial until final settlement.
Yes, free, with attribution: name TexasHomeBills™ and link to this page. The numbers come from ERCOT and the PUCT documents linked in each row; please credit them too. Download every row as CSV or JSON, or use the API.
TexasHomeBills is independent. Not affiliated with or endorsed by ERCOT or the PUCT. All data →
TexasHomeBills™, “Texas large-load (data center) demand” (data as of Oct 9, 2026), https://texashomebills.com/data/large-load-demand
Free to reuse, quote and republish with attribution: name TexasHomeBills™ and link to this page. Terms of Service →