The LOADSTAR Number · Free to cite
How much of the ISO/RTO generation queue has a signed interconnection agreement
25.9%
of the capacity requested in the seven U.S. ISO/
302.1 of 1,167.0 GW.
Queue files read Oct. 9, 2026 · Computed (UTC)
This is a floor, read from the operators’ files. It does not count data centers and does not forecast what gets built.
“Signed” on this page means the operator’s file shows an executed interconnection agreement.
Free to cite · CC BY 4.0 · credit “LOADSTAR, index.loadstar.energy”
The signed share · files read Oct. 9, 2026
Of every 100 GW requested, 26 show a signed agreement
Each square is 1% of the capacity requested in the seven queues. A filled square is capacity with an executed interconnection agreement in the operator’s file.
25.9%
About 26 of 100 squares are filled.
302.1 of 1,167.0 GW requested, in seven queues.
All seven queues
Hover over or tap an operator, or use the arrow keys, to read its row.
*MISO’s active list holds almost no signed capacity by design. See the figure without MISO.
- Filled: an executed interconnection agreement shows in the operator’s file.
- Partly filled: the last filled square in a row stops at the exact share.
- Empty: no executed agreement shows. That means unverified, not ruled out.
- Outlined: left out of the count.
Each square is 1% of requested capacity (GW), not 1% of projects. Squares are not rounded row by row: the last filled square in each row stops at the exact share, which is printed beside the row. Shares are not comparable across operators, because each records agreement status differently.
Source: LOADSTAR’s reading of the seven ISO/RTOs’ own queue files, read Oct. 9, 2026. The reading and these figures are LOADSTAR’s, licensed CC BY 4.0. Source files belong to each operator. LOADSTAR is not affiliated with any grid operator.
View the same data as a table
| Operator | Requested GW | Signed GW | Signed share | Squares filled | Read on |
|---|---|---|---|---|---|
| ERCOT | 415.9 | 120.3 | 28.9% | 10.4 of 36 | Oct. 9, 2026 |
| MISO | 261.4 | 0.2 | 0.1%* | 0.02 of 22 | Oct. 9, 2026 |
| PJM | 237.3 | 41.3 | 17.4% | 3.48 of 20 | Oct. 9, 2026 |
| SPP | 139.2 | 67.2 | 48.3% | 5.8 of 12 | Oct. 9, 2026 |
| CAISO | 73.1 | 58.9 | 80.6% | 4.84 of 6 | Oct. 9, 2026 |
| NYISO | 30.0 | 7.5 | 25.1% | 0.75 of 3 | Oct. 9, 2026 |
| ISO-NE | 10.1 | 6.7 | 66.6% | 0.67 of 1 | Oct. 9, 2026 |
| Seven queues | 1,167.0 | 302.1 | 25.9% | about 26 of 100 | Oct. 9, 2026 |
| Without MISO | 905.6 | 301.9 | 33.3% | about 26 of 78 | Oct. 9, 2026 |
*MISO’s active list holds almost no signed capacity by design. See the figure without MISO.
Figures are rounded to one decimal. Shares are computed from unrounded MW, so rows may not reproduce exactly from the rounded GW.
Supply and load
Supply
Power plants and storage waiting to connect
25.9% of requested capacity shows an executed interconnection agreement, across seven ISO/RTO queues. Our reading, from the operators’ own files.
See it queue by queue →
Load
Large customers asking for power, data centers among them
For now we cover one state, Georgia, using the figures Georgia Power reports to the Georgia Public Service Commission. They are the utility’s numbers, not ours. PJM is next; no date yet.
See Georgia →
Generation and load are tracked separately. We never add them together.
How to read it
- What does the number measure?
- The share of capacity requested in the seven U.S. ISO/
RTO generation interconnection queues, in active requests of 50 MW and up, that shows an executed interconnection agreement in each operator’s own queue file. - Is this the data-center queue?
- No. It counts power plants and storage waiting to connect. Data-center requests sit on the load side, which most operators do not publish request by request. The two are never added together.
- Why do you call it a floor?
- The number is not a forecast of what gets built. A request counts as signed only when the operator’s file shows it. Everything else counts as unverified, so the true share is likely higher. One exception: in NYISO we read “signed” from the project stage, because its file carries no agreement field, so a project could count before its agreement is published. In PJM we read the stage too, and every row we count also lists a posted agreement in PJM’s own file (checked Oct. 7, 2026).
- Can I check it?
- Yes. You can recompute the totals from our public JSON. The rule for each operator is at /verify. Every change to the method is dated at /corrections, including the Sept. 29, 2026, change that lowered the number.
Limits and blind spots
- Generation only. No data-center or other large-load requests are in this number.
- Seven ISO/
RTO queues, active requests of 50 MW and up. Withdrawn and in-service projects are not in the total. Utilities outside an ISO or RTO are not covered. We do not remove duplicates from the requested total, so one project can appear more than once. - MISO’s active list holds almost no signed capacity by design, which pulls the seven-queue share down. Without MISO it is 33.3%.
- Shares are not comparable across operators, because each records agreement status differently. In NYISO we read “signed” from the project stage, not from an agreement field. That is weaker evidence. In PJM we read the stage too, and each row we count as signed also lists a posted agreement document (checked Oct. 7, 2026).
- Our reading can be wrong. Four corrections in late September 2026 changed the number: three raised it and one, on Sept. 29, lowered it. Every correction is dated at /corrections. The series is consistent from Sept. 29, 2026.
For reporters and analysts
Journalists
The number, its date, the source files and a citation you can copy. Free to cite, no permission needed. Send questions to the LOADSTAR data desk at [email protected]. We aim to answer the same business day, and within two business days at most.
Open the press page →
Experts and analysts
The rule for each operator, the archived inputs and the dated corrections, for when you have to explain the number line by line. Teams that need the daily series behind it can ask about a data license.
For experts →
LOADSTAR takes no money from grid operators, utilities or developers. The data license is offered on the same terms to every licensee.
Notes
Each note is dated and sourced. We post a short note when the number moves or we publish a correction.
Next on the calendar: PJM’s Load Analysis Subcommittee meets Nov. 24, 2026, according to PJM’s committee page.
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The LOADSTAR Number is free to cite under CC BY 4.0. Credit “LOADSTAR, index.loadstar.energy” and give the as-of date. The license covers our reading and our figures, not the operators’ files. Source files belong to each operator. LOADSTAR is not affiliated with any grid operator.