Data centers and new power in Wisconsin
14.7 GW of new power is waiting to connect to the grid in Wisconsin — 72 requests across 18 counties. That is the 29th largest amount of any state. 62 projects are built, 116 withdrawn. Data as of 14 October 2026.
What is happening with electricity in Wisconsin
Every new power plant, battery or big customer has to join a waiting list before it can plug into the grid. This is what that list looks like in Wisconsin right now.
Where every request ever filed here ended up
Most requests in the US are withdrawn — a developer tests a site and moves on. That is normal, not a warning sign for Wisconsin.
What kind of power is asking to connect
By capacity requested. Data as of 14 October 2026.
All the numbers
250 requests ever filed
Source: the interconnection queues of every transmission provider operating in Wisconsin. Parsed and normalised by Watt Street. Data as of 14 October 2026. A queued project is a request, not a commitment.
Waiting to connect, by type of power
| Type | Projects | Capacity requested |
|---|---|---|
| Solar | 42 | 6.9 GW |
| Natural gas | 15 | 6.5 GW |
| Wind | 5 | 760 MW |
| Not stated | 8 | 432 MW |
| Solar + battery | 2 | 180 MW |
Who runs the waiting list in Wisconsin
Counties in Wisconsin
18 with power on the waiting list
Every county with at least five requests on file. Open one to check an address, or see the schools near any mapped data center.
| County | Waiting | Capacity queued | Already built |
|---|---|---|---|
| Kenosha County | 6 | 1.9 GW | 350 MW |
| Portage County | 6 | 1.7 GW | 398 MW |
| Walworth County | 4 | 1.6 GW | 0 MW |
| Dane County | 3 | 1.3 GW | 950 MW |
| Columbia County | 6 | 1.3 GW | 522 MW |
| Fond du Lac County | 2 | 625 MW | 0 MW |
| Rock County | 5 | 510 MW | 719 MW |
| Waushara County | 4 | 330 MW | 99 MW |
| Barron County | 3 | 295 MW | 200 MW |
| Marathon County | 2 | 270 MW | 99 MW |
| Wood County | 2 | 250 MW | 300 MW |
| Sheboygan County | 2 | 250 MW | 225 MW |
| Grant County | 2 | 205 MW | 345 MW |
| Clark County | 1 | 190 MW | 0 MW |
| Green County | 2 | 185 MW | 150 MW |
| Jefferson County | 2 | 180 MW | 224 MW |
| Lafayette County | 1 | 98 MW | 300 MW |
| St. Croix County | 0 | 0 MW | 100 MW |
Key dates for projects here
1 dated · next closes 2027-09-10 (MISO)
| Queue | What closes | Closes | Standing |
|---|---|---|---|
| MISO | MISO DPP-2026 Definitive Planning Phase application deadline Attachment X of the tariff and BPM-015. | 2027-09-10 | confirmed source |
| PJM | Dominion GS-5 (Virginia SCC PUR-2025-00058) - ESAs signed on or after this date carry the 14-year term From this date the GS-5 large-load tariff carries a 14-year minimum term, alongside the reported 85% of contracted transmission demand minimum and $1… | No date published yet | disputed source |
| FERC | FERC large-load show cause — stakeholder comments on RTO responses Comments on the six RTO/ISO responses to the FPA section 206 show-cause orders of 18 June 2026 (PJM EL26-67, SPP EL26-68, NYISO EL26-69, MISO EL26-70… | No date published yet | unconfirmed source |
| FERC | FERC RM26-4 — generic large-load rulemaking Still at ANOPR stage. | No date published yet | confirmed source |
| FERC | Georgia PSC - Georgia Power must file large-load contracts 30 days before execution A standing obligation rather than a dated one: large-load contracts must be filed with the commission at least 30 days before they are executed. | No date published yet | confirmed source |
A date marked confirmed was checked by a person against the authority's own tariff, order or form page. Anything else is listed so you know it exists, with a link so you can check it yourself. Full calendar.
Data center campuses recorded in Wisconsin
1 listed
| Campus | Operator | Reported demand |
|---|---|---|
| Microsoft Fairwater Wisconsin | Microsoft | 369 MW |
Tagged as a data center by our classification, not by the operator’s own statement. Only campuses with coordinates can be mapped.
Live in Wisconsin?
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