MISO interconnection queue: solar, gas and storage in the pipeline
The MISO interconnection queue in the FieldProspects database lists 1,684 planned power projects totalling 301.4 GW, compared with 217.3 GW already operating on the MISO grid. Solar dominates the pipeline with 839 entries and 130.4 GW, well ahead of natural gas and battery storage.
Data as of
What is the MISO interconnection queue?
The MISO interconnection queue is the record of generation and storage projects that have requested a connection to the grid run by the Midcontinent Independent System Operator. Each entry is studied for its effect on the grid, and the list shows what developers want to build across the central United States.
MISO planned and operating projects
Solar is 43.3% of planned MISO capacity. Natural gas is second at 51.3 GW from 142 entries, which would add about 60.4% to the 85 GW of gas already operating. Battery storage has 280 entries and 45.9 GW, against only 1.2 GW operating today, and wind adds 36.9 GW.
Hybrid projects that pair generation with storage are tracked as their own technologies and account for another 116 entries and 22.8 GW. Coal is almost absent from the new pipeline, with 1 planned entry of 10 MW against 47.5 GW in operation. Of the 1,684 planned entries, 1,357 come from the MISO interconnection queue and 327 are planned units from federal generator filings.
| Planned projects | 1,684 |
|---|---|
| Planned capacity | 301.4 GW |
| Operating projects | 5,027 |
| Operating capacity | 217.3 GW |
| Planned projects with a developer attributed | 32.8% (552 of 1,684) |
| Operating projects with a developer attributed | 7% (353 of 5,027) |
| Technology | Planned projects | Planned capacity | Operating projects | Operating capacity |
|---|---|---|---|---|
| Solar | 839 | 130.4 GW | 1,388 | 24.4 GW |
| Natural Gas | 142 | 51.3 GW | 1,076 | 85 GW |
| Battery Storage | 280 | 45.9 GW | 42 | 1.2 GW |
| Wind | 188 | 36.9 GW | 429 | 33.7 GW |
| Solar + Storage (Hybrid) | 99 | 18.9 GW | None | None |
| Transmission | 77 | 11.4 GW | None | None |
| Wind + Storage (Hybrid) | 6 | 1.7 GW | None | None |
| Nuclear | 4 | 1.6 GW | 14 | 13.1 GW |
| Hybrid (Other) | 9 | 1.5 GW | None | None |
| Other | 7 | 929 MW | 13 | 313.2 MW |
| Solar + Wind + Storage (Hybrid) | 2 | 750 MW | None | None |
| Hydro | 16 | 151.8 MW | 632 | 4.9 GW |
| Diesel | 3 | 29 MW | None | None |
| Waste Heat | 3 | 24.5 MW | 13 | 322.3 MW |
| Oil | 7 | 22.6 MW | 972 | 3.5 GW |
| Coal | 1 | 10 MW | 118 | 47.5 GW |
| Landfill Gas | 1 | 1.6 MW | 209 | 273.4 MW |
| Biomass | None | None | 99 | 1.9 GW |
| Petroleum Coke | None | None | 10 | 1.1 GW |
| Municipal Solid Waste | None | None | 12 | 152 MW |
| All technologies | 1,684 | 301.4 GW | 5,027 | 217.3 GW |
MISO projects by state
Illinois has the largest planned pipeline with 316 projects and 46.6 GW, and Michigan follows at 44.2 GW. Louisiana and Arkansas come next at about 33.3 GW each, and Arkansas ranks above Indiana on capacity even though Indiana has more entries, 168 against 149. The eight states shown hold 85.2% of planned MISO capacity.
When MISO projects are expected in service
567 planned MISO entries, 33.7% of the list and 87 GW, carry an expected year earlier than 2026. They are still listed as planned, so the expected date has passed without the project entering service. A further 6 carry no date.
Among entries still expected to come online, 2026 has the most, 323, but 2028 holds the most capacity at 64.1 GW across 294 projects. Only 17 entries are expected after 2030, so the dated list is a near-term view.
| Expected in-service year | Projects | Capacity | Share of capacity |
|---|---|---|---|
| Before 2026, still listed as planned | 567 | 87 GW | 28.9% |
| 2026 | 323 | 42.7 GW | 14.2% |
| 2027 | 285 | 46.2 GW | 15.3% |
| 2028 | 294 | 64.1 GW | 21.3% |
| 2029 | 77 | 16.1 GW | 5.3% |
| 2030 | 115 | 39 GW | 12.9% |
| 2031 | 15 | 3.6 GW | 1.2% |
| 2034 | 2 | 1 GW | 0.3% |
| No expected date | 6 | 1.7 GW | 0.6% |
| All planned projects | 1,684 | 301.4 GW | 100% |
The five largest planned MISO entries
MISO does not publish a project name for many of its entries, so they carry the name of their connection point, such as a substation or a transmission line. Only one of these five, Vista Sands Solar, reads as a project name. The largest, at 2.2 GW, is 12.3 times the average of 180 MW among planned entries that state a capacity.
| Entry name | Capacity |
|---|---|
| SIOUX | 2.2 GW |
| Sugar Creek - Cayuga CT 345.0kV | 1.5 GW |
| Majestic-Milan 345 kV Line | 1.4 GW |
| North Madison 345/138 kV | 1.2 GW |
| Vista Sands Solar | 1.2 GW |
What the database adds for MISO
Because many MISO entries are named for a connection point, the county and the developer are what place an entry on the ground. A developer is attributed on 32.8% of planned MISO projects (552 of 1,684) and 7% of operating ones.
The database adds the county to each entry and, where a developer is attributed, links the company to the contacts who work there.
Source. MISO interconnection queue and U.S. Energy Information Administration Form EIA-860M, compiled by FieldProspects.
Related pages
- Interconnection queues Queue summaries for ERCOT, PJM, MISO and CAISO, with planned capacity and technology mix.
- PJM Planned and operating projects on the PJM grid, by technology, state and in-service year.
- CAISO Planned and operating projects on the CAISO grid, by technology, state and in-service year.
- ERCOT Planned and operating projects on the ERCOT grid, by technology, state and in-service year.
- Interconnection queue data Planned projects from the grid operator queues, combined into a single table.
- Investors and lenders Screen the pipeline by technology, grid and sponsor before you underwrite it.
- Solar Planned and operating solar in the database, by state, grid and expected in-service year.
- Largest solar developers Solar developers ranked by attributed project count and capacity, with how much of the market is attributed.
- FieldProspects vs Cleanview A dated comparison of what each product costs and includes, using only public information.
- Pricing Flat monthly access to the database, on a Solo, Unlimited or data license plan.