Texas Data Center Interconnection Queue Soars to 474GW as Grid Nears Its Limits

Ryan McEntush of a16z wrote an analysis of why Texas is making data centers "wait in line for power": at the end of 2024, large new customers in the state's interconnection queue totaled 63GW; by June this figure had surged to 474GW—more than 5 times the historical peak demand—with about 90% coming from data centers. Texas has since pressed pause on data center power use, halting approval of new large-load projects. Using this as a starting point, author FinanceYF5 is writing a series on Texas data center power and how the US will supply electricity for the next round of growth.

Confirmed

In the past, companies just needed to find a utility with spare capacity and match usage through long-term contracts to interconnect; now the grid is near its limit, and almost all new large loads require line and substation upgrades—fully connecting a large data center can take 5–10 years.
Interconnection challenges aren't just about how much power is generated but also grid stability: during voltage fluctuations, data centers may instantly switch to backup power, making several GW of load disappear simultaneously; the ERCOT grid is relatively isolated, and in some scenarios a sudden loss of about 3.2GW of load could be catastrophic.
Unwilling to wait for the grid, data centers are starting to bring their own power: SemiAnalysis has tracked 75GW of behind-the-meter generation equipment orders, though most of these campuses still plan to eventually interconnect—islanded systems must solve reserve capacity, voltage stability, and other issues on their own.
A more realistic solution is turning data centers into flexible load: research estimates that if large loads forgo just 0.5% of grid electricity per year, ERCOT could accommodate roughly 10GW more without new generation; scaled across the US's 22 large grids, nearly 100GW of additional capacity.
On the supply side, hundreds of GW of new demand will ultimately require new power and new grids. The US plans to add 86GW of capacity this year: solar 43.4GW, storage 24.3GW, wind 11.8GW, natural gas 6.3GW, and zero new nuclear; beyond data centers, electrification and robotics will share the same power infrastructure.

Why it matters

Texas is a key region for global AI compute expansion, and its approval freeze and queue backlog directly constrain the pace of data center construction—foreshadowing similar bottlenecks elsewhere.
The trade-off between the "flexible load" and "behind-the-meter power" paths will shape the future relationship between data centers and the grid, as well as the direction of power system investment.

2026-10-10 ~ 2026-10-10 · 8 related posts

Primary sources

Texas data center power queue hits 474GW, 90% from data centers — FinanceYF5 · 2026-10-10 22:00 (UTC+08:00)
Texas Freezes Data Center Permits as Grid Queue Hits 474GW, Five Times Peak Demand — FinanceYF5 · 2026-10-10 22:01 (UTC+08:00)
Shedding 0.5% of load could unlock ~100GW of US grid capacity — FinanceYF5 · 2026-10-10 22:01 (UTC+08:00)

[source] Texas data center power queue hits 474GW, 90% from data centers — FinanceYF5 · 2026-10-10
Fully connecting a large data center can now take 5–10 years — FinanceYF5 · 2026-10-10
A sudden 3.2GW load drop could destabilize ERCOT, analysis warns — FinanceYF5 · 2026-10-10
Data centers go behind-the-meter: 75GW of self-generation orders tracked — FinanceYF5 · 2026-10-10
[source] Shedding 0.5% of load could unlock ~100GW of US grid capacity — FinanceYF5 · 2026-10-10
Beyond data centers: EVs and robots will need the same power infrastructure — FinanceYF5 · 2026-10-10

2 near-duplicate retellings: FinanceYF5 · FinanceYF5