MISO Leads the U.S. Solar Queue

Across every U.S. grid operator that publishes a machine-readable queue, MISO carries 1,758 solar projects — more than any other operator on the sealed snapshot of June 11, 2026. Solar is the single most common technology in the queues we track: 4,145 projects nationwide, representing 515.1 GW of requested capacity.

That leadership comes with a hard caveat. A queue position is a request to connect, not a built, approved, or financed project, and solar applicants withdraw at a high rate. Of all solar entries, 45.1% are already withdrawn. This report reads the national solar picture from one sealed day across 5 ISOs and RTOs — where the projects sit, what shape they are in, and how solar stacks up against the other technologies in line.

MISO holds 1,758 solar projects, the highest solar count of any covered grid operator.

This is a census of the published queues, not of every project on every grid in the country. 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, are the entire scope here.

Frequently Asked Questions

Q: Does being in the solar queue mean the project will get built?
A: No. A queue position is a request to connect, not a built, approved, or financed project. Among solar applications, 45.1% are already withdrawn in this snapshot, and many that remain will not reach construction. Treat the queue as a pipeline of intent, not a forecast of supply.

Q: How big is the solar queue compared with everything else?
A: Solar leads at 4,145 projects and 515.1 GW. The next technology, Battery Storage, has 2,824 projects and 442.0 GW, followed by Wind at 1,722 projects and 319.2 GW. Solar carries the largest combined count and capacity of the technologies we track.

Q: Why does MISO lead the solar count?
A: MISO posts 1,758 solar projects, ahead of every peer, and Solar is the top fuel in its overall queue at a 46.4% share. The Midwest and Mid-South footprint MISO covers has wide, flat, lower-cost land that suits utility-scale solar, which shows up as raw project volume.

Q: How is a sealed snapshot different from checking an ISO website today?
A: A live ISO page changes as projects enter and leave. Our snapshot is content-hashed and frozen on June 11, 2026, so the figures here are fixed and reproducible. A re-query tomorrow would return different counts; this page will not.

Q: Who acts on national solar-queue data?
A: Solar developers siting the next request, EPC contractors and panel or inverter suppliers reading demand, and energy buyers chasing PPAs all use it. Each reads the same sealed numbers for a different decision — where to file, where to staff, and where supply is thickest.

Solar in the Queues Nationwide

Solar's footprint on June 11, 2026 is the largest of any technology by both count and requested megawatts. The distribution underneath the headline matters more than the headline: a high total paired with heavy withdrawals tells you this is a crowded, speculative segment where many applicants are testing a site rather than committing to one.

The median solar request is 125 MW — a true utility-scale figure, not rooftop. The largest single entry, JOVE SOLAR, is logged at 2,000 MW. A median that sits well below the largest entry signals a field of many mid-size farms with a thin tail of giant projects, which is the normal shape of a solar queue.

Why does solar fill the queues this way? Of every grid-scale generation type, solar has the lowest barrier to entry. A developer can option a parcel of flat land, file an interconnection request, and hold the position cheaply while the financing and offtake come together. That low cost to enter is exactly why solar dominates the count — and exactly why so much of it later withdraws. The queue is the front door, and for solar the door is wide. Reading the count without the withdrawal rate beside it would badly overstate how much of this pipeline is real.

Solar reaches 515.1 GW of requested capacity across the covered queues.

How Solar Status Splits

Status is where the queue's aspirational nature becomes concrete. We group each operator's own status taxonomy into withdrawn, operational, still-in-queue, and unknown.

Withdrawn solar entries outnumber every other status bucket at 1,870 projects. Only 17 solar entries read as operational. The 522 in the unknown bucket come from feeds that publish no status at all — do not read those as active. Among solar projects with a known status, 51.6% are withdrawn, which sharpens the warning: more than half of resolvable solar applications have already left.

The split between withdrawn and still-in-queue is the most useful number on this page for anyone trying to estimate real supply. A still-in-queue position is alive but unproven — it has not cleared the studies that decide whether the grid can absorb it without expensive upgrades. Those study results are where solar projects most often die, because a single shared upgrade cost can be allocated across a cluster of nearby requests and price the marginal ones out. The 1,736 projects still in the queue are the population to watch; the 1,870 already withdrawn are the cautionary baseline.

Withdrawn solar entries total 1,870 — more than the 1,736 still in the queue.

Where the Solar Sits by Operator

MISO is the clear solar leader. Several other large operators also rank Solar as their top fuel, which is why the national count concentrates the way it does.

MISO's 1,758 solar projects make it the single largest pool, and Solar is its top fuel at a 46.4% share. CAISO runs Solar as its top fuel too, at a 46.1% share. The contrast with ERCOT — where Battery Storage leads at 50.1% — and SPP, where Wind leads at 35.3%, shows that "the U.S. solar queue" is really a Midwest and California story sitting beside very different regional mixes. For the operator-level detail behind these shares, see the MISO interconnection queue report and the CAISO interconnection queue report.

Solar Against the Other Technologies

Set solar beside the other buckets and its lead is in volume; its withdrawal rate is mid-pack among the renewables.

Solar's 45.1% withdrawal rate runs higher than Battery Storage at 32.6% and Wind at 38.8%, and well above Natural Gas at 24.1%. Battery Storage projects are the natural complement — paired with solar, storage smooths the output — and the two together dominate the renewable pipeline. The full picture lives in the national index for context: 1600.7 GW sits across all technologies, and solar is the largest slice of it. The companion battery storage interconnection queue report covers the storage side in depth.

The way to read this table is that solar wins on size and loses on certainty. Its 4,145 projects and 515.1 GW are the largest figures in every column, but its 45.1% withdrawal rate is among the highest of the generation technologies, beaten for churn only by hybrid at 48.4%.

That combination is the defining feature of the solar queue: it is the widest funnel and also the leakiest one. A reader who wants to turn this into a prospect list cannot take the 4,145 count at face value, because nearly half of those filings have already left. The honest number to work from is the still-in-queue population, read against the operator where solar concentrates most heavily.

Methodology

Source: Public ISO/RTO interconnection-queue listings, via the US Tech Automations grid-queue clock (sealed daily, content-hashed).

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.

The grid disclaimer applies throughout: a queue position is a request to connect, not a built, approved, or financed project. A large share of projects withdraw before construction, so nothing here should be read as capacity that will come online.

Two grouping rules govern the buckets. 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 (explicitly in-service or commercial operation), still-in-queue, and unknown for feeds that publish no status. Some ISOs drop withdrawn projects from their feed entirely — so an operator reporting no withdrawals is a feed artifact, not a claim that none withdrew.

How the clock builds a solar view:

1. Collect. Pull each covered ISO/RTO queue feed on the snapshot day, June 11, 2026.

2. Normalize labels. Map every vendor fuel string into the shared technology buckets so "PV", "photovoltaic", and "solar" all land under Solar.

3. Bucket status. Classify each project as withdrawn, operational, still-in-queue, or unknown using the rules above.

4. Seal. Content-hash the day's aggregate so the figures are frozen and reproducible.

Put Grid Data to Work

This solar picture fits three readers. Solar developers siting the next request can use MISO's 1,758-project depth and 46.4% solar share to gauge how crowded a region already is before filing — and weigh that against the 45.1% withdrawal rate as a signal of how thin the average position really is. EPC contractors and equipment suppliers can read 515.1 GW of requested solar as a demand ceiling, then time panel and inverter inventory to the operators where solar leads. Energy buyers chasing PPAs can scan which operators concentrate solar and approach the survivors of the withdrawal churn.

US Tech Automations builds the monitoring layer for that work: watching queue feeds for status changes, routing the signal to the right desk, and drafting first-touch outreach when a project's status moves. The same sealed-snapshot discipline runs the permits research at https://permits.ustechautomations.com.

See how agentic workflows automate queue monitoring

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