What Is in the ERCOT Interconnection Queue?

What is in the ERCOT interconnection queue? On June 11, 2026, our sealed snapshot of the Texas grid operator's published feed holds 1,839 projects totaling 426.8 GW of requested capacity, and the mix is led by battery storage at a 50.1% share.

That answers the headline question — but the more useful answer is what those numbers do and do not mean. A queue position is a request to connect to the grid, not a built, approved, or financed project, and ERCOT's queue is best read as a map of where Texas developers are placing their bets, not a schedule of plants coming online.

One ERCOT figure needs a careful flag before anything else. The snapshot shows 0 withdrawn projects and a 0.0% withdrawal rate for ERCOT. That does not mean nobody has left the Texas queue. ERCOT's published feed drops withdrawn projects entirely, so the snapshot simply never sees them — the 0.0% is a feed artifact, not a clean queue. Every project ERCOT still publishes is counted as in-queue, which is why its in-queue share reads as 100.0%. This is a cross-sectional census of one sealed day, with no trend claims.

An interconnection queue is the ordered list of generation and storage projects that have applied to connect to a regional grid and are working through the operator's study process. ERCOT's, by published count, is one of the most storage-heavy in the country.

What the Snapshot Shows

• ERCOT lists 1,839 projects in its published interconnection queue, according to the sealed interconnection-queue snapshot.

• The ERCOT queue totals 426.8 GW of requested capacity, per the same sealed snapshot.

• Battery storage leads the ERCOT mix at a 50.1% share.

• The snapshot shows 0 withdrawn ERCOT projects — a feed artifact, not a claim that none withdrew.

• The largest single request is Prairie Ridge (Gas - CC) at 1,660 MW, per the sealed snapshot.

Battery storage is more than half of the published ERCOT queue, at 50.1% — the only covered ISO where storage, not solar, leads the mix.

The ERCOT Queue at a Glance

The 201 MW median is the largest of any covered ISO, which says ERCOT's typical filing is bigger than the typical request elsewhere. The 100.0% in-queue figure is a direct consequence of the feed dropping withdrawn records — it is not evidence that the Texas queue lacks attrition.

What Is Getting Built — by Category

ERCOT's queue rewards a category-by-category read, because the technologies behave very differently. The full breakdown below is grouped from the operator's own labels by our keyword buckets.

Battery Storage — the leading category

Battery storage is the largest bucket on both counts: 922 projects and 163,064 MW. A battery-storage interconnection request is a proposal to connect grid-scale energy storage — typically lithium-ion — that charges when power is cheap or plentiful and discharges into peak demand. ERCOT's energy-only market and its volatile real-time prices make storage economically attractive, which is why storage leads here when solar leads almost everywhere else. Battery storage holds 163,064 MW across 922 ERCOT requests, the single biggest category in the queue.

Solar — the close second

Solar follows closely with 632 projects and 151,965 MW. A solar request is a proposal to connect utility-scale photovoltaic generation. Texas has abundant land and strong irradiance, and solar's capacity total nearly matches storage's even with far fewer giant projects. The pairing of 922 storage and 632 solar requests is no accident — storage and solar are increasingly co-developed to capture and reshape midday output.

Natural gas — fewer projects, dense capacity

Natural gas shows 117 projects but 61,425 MW, a high capacity-per-project profile. A gas interconnection request is a proposal to connect thermal generation, often combined-cycle plants. The category's biggest single entry — Prairie Ridge (Gas - CC) at 1,660 MW — is also the largest request in the whole ERCOT snapshot, underscoring that gas filings, while few, are individually massive.

Wind and the long tail

Wind contributes 158 projects and 47,360 MW. A wind interconnection request is a proposal to connect turbine generation, and in ERCOT it sits well behind storage and solar on both count and capacity — a reversal of the central-plains pattern where wind still leads.

The remaining categories are thin: Other at 9 projects and 1,664 MW, and a single nuclear request at 1,337 MW, notable mostly because one filing carries more than a gigawatt on its own. The long tail confirms the headline read — ERCOT's queue is a storage-and-solar story with a dense gas backbone, and the conventional and legacy fuels are barely filing.

Stepping back, the category structure explains why ERCOT's median project, at 201 MW, is the largest of any covered queue. A queue weighted toward grid-scale storage and utility solar, plus a handful of very large gas and nuclear entries, pushes the typical filing size up.

That has a practical consequence for anyone reading the queue as demand: ERCOT's activity is concentrated in fewer, bigger projects than a queue like ISO-NE's, where a 26 MW median reflects many small distributed requests. The Texas queue is a market of serious, capital-intensive filings — which is also why the missing withdrawn records matter so much, since the projects that do drop out are exactly the large ones whose abandonment moves the supply picture.

Natural gas carries 61,425 MW across only 117 ERCOT requests, the densest capacity-per-project of any major category in the Texas queue.

How ERCOT Compares

ERCOT sits second on requested capacity and third on project count among the covered queues — busier on megawatts than ISO-NE and SPP, quieter on project count than MISO and CAISO. The comparison uses each ISO's published headline figures.

Across all covered queues the snapshot holds 10,618 projects and 1600.7 GW. Note that ERCOT and SPP both show 0.0% withdrawn — both feeds drop withdrawn records — while MISO (56.2%) and CAISO (76.8%) publish withdrawn projects. Withdrawal percentages are therefore not comparable across these operators. Within ERCOT's footprint, Texas is the dominant state with 1,839 projects — the same slice we break out in the Texas interconnection queue report.

Methodology and the Grid Disclaimer

This report draws on public ISO/RTO interconnection-queue listings, via the grid-queue clock (sealed daily, content-hashed). The scope: generation and storage projects sitting in the interconnection queues of the U.S. grid operators (ISOs and RTOs) that publish a machine-readable queue, as captured by US Tech Automations' sealed daily grid snapshots. This is a census of the published queues, not of every project on every grid in the country.

All figures are computed directly from US Tech Automations' sealed daily grid-queue snapshots; nothing is estimated, modeled, or extrapolated. Fuel and status labels are grouped from each ISO's own categories, and the grouping rules appear in the display set.

Vendor fuel and technology labels differ by ISO and are grouped into Solar, Battery Storage, Wind, Natural Gas, Hybrid and Other by keyword. Each ISO publishes its own status taxonomy; statuses are grouped into withdrawn, operational, still-in-queue, and unknown for feeds that publish no status. Some ISOs drop withdrawn projects from their feed entirely — ERCOT is one of them, which is why this snapshot shows 0 withdrawn for ERCOT.

The grid disclaimer, restated: a queue position is a request to connect, not a built, approved, or financed project. Nothing here is a forecast. ERCOT's 0.0% withdrawn is a feed artifact, not evidence that Texas projects do not drop out.

How we build the snapshot:

1. Collect. We pull each covered ISO's published interconnection-queue feed on its own schedule.

2. Normalize. Differing vendor fuel and status labels are mapped onto common buckets.

3. Seal. The day's normalized records are content-hashed and stored append-only.

4. Aggregate. We compute counts, capacity totals, medians, and status splits across the sealed records.

Frequently Asked Questions

Q: Why does ERCOT show 0 withdrawn projects?
A: Because ERCOT's published feed drops withdrawn projects entirely, so the snapshot never sees them. The 0 and the 0.0% rate are a feed artifact, not a claim that no Texas project ever withdrew. The 100.0% in-queue share follows from the same omission.

Q: What does a battery-storage queue position actually cover?
A: It is a proposal to connect grid-scale storage that charges off-peak and discharges into demand peaks. ERCOT's volatile prices make storage attractive, which is why it leads the queue at 50.1%, with 922 projects and 163,064 MW.

Q: Why does battery storage lead ERCOT when solar leads elsewhere?
A: ERCOT runs an energy-only market with sharp real-time price swings, which rewards fast-dispatch storage. Storage's 922 requests edge out solar's 632, a mix you do not see in solar-led queues like MISO or CAISO.

Q: Does 426.8 GW mean Texas is adding that much capacity?
A: No. The 426.8 GW is requested capacity in the queue, not built capacity, and a position is a request to connect, never a forecast. With withdrawn records dropped from the feed, the total reflects only projects ERCOT still publishes.

Q: Why is the ERCOT median project the largest at 201 MW?
A: A 201 MW median, the highest of any covered ISO, means the typical Texas filing is bigger than the typical request elsewhere. The largest single entry is Prairie Ridge (Gas - CC) at 1,660 MW.

Put Grid Data to Work

ERCOT's published queue is a forward-looking demand signal for the Texas market, and each reader uses a different slice.

Project developers siting the next request can read the 922 storage and 632 solar filings to judge where the queue is already crowded and where a differentiated proposal might clear. EPC contractors and equipment suppliers can treat the 163,064 MW of storage and 151,965 MW of solar as an order-book signal for batteries, inverters, and panels in Texas. Energy buyers and traders can map the 61,425 MW of dense gas capacity against storage growth to anticipate where dispatchable supply is concentrating.

US Tech Automations automates that watch: it monitors the published feed for new filings, routes the relevant ones to the right team, and drafts first-pass outreach when a project matches a buyer's or supplier's criteria. The same sealed-snapshot method runs across every queue — see the national totals in our US interconnection queue index and the technology lens in the battery storage interconnection queue. Explore the underlying sealed records at permits.ustechautomations.com, and see the monitoring on the agentic workflows platform.

Source: US Tech Automations Research — computed from the sealed daily interconnection-queue snapshot, June 11, 2026.