Cook County

Moratoriums and bans

1. Aug. 11, 2026 Chicago: Executive order. Mayor Brandon Johnson's Executive Order 2026-5 adds multi-agency review of energy, water, backup power, air, noise and community effects for data centers that need a new Planned Development, orders air-permit and noise rules within 90 days and task-force code proposals by March 15, 2027, and asks the City Council to pass a moratorium. (Bloomberg Government, Aug. 11, 2026; DLA Piper, Aug. 19, 2026)
2. Sept. 23, 2026 Chicago: Moratorium (proposed). Johnson and several aldermen introduced a 12-month moratorium on new data centers in the city while rules on pollution, water and power costs are written; a separate ordinance from Ald. Bill Conway would add zoning and review requirements. Both are pending before the City Council. (Axios Chicago, Sept. 23, 2026; Chicago Tribune (via GovTech), Sept. 23, 2026)

Updates, newest first

1. Oct. 22, 2026 Microsoft Chicago data center, Northlake · Illinois EPA lists final air permit and NPDES permit files for the Microsoft Chicago Data Center at 601 Northwest Ave. (Illinois Environmental Protection Agency, Oct. 22, 2026)
2. Oct. 22, 2026 Digital Realty Cermak campus (350 E. Cermak) · Digital Realty's project page describes a next-generation facility under construction across the street at 330 E. Cermak, and its Chicago location page lists 350 E. Cermak (ORD10) at about 1 million square feet. (Digital Realty, Oct. 22, 2026; Digital Realty, Oct. 22, 2026)
3. Oct. 22, 2026 Digital Realty South Federal Street (ORD01) · Listed as an operating Chicago facility (ORD01) on Digital Realty's location page, about 146,000 square feet. (Digital Realty, Oct. 22, 2026)
4. Oct. 22, 2026 Digital Realty Franklin Park campus · Digital Realty lists ORD12, ORD13 and ORD14 at 9333, 9355 and 9377 Grand Ave. as Chicago-area facilities. (Digital Realty, Oct. 22, 2026)
5. Oct. 22, 2026 Serverfarm CH1 (840 S. Canal) · Serverfarm's CH1 page offers 443,000 square feet of colocation space. (Serverfarm, Oct. 22, 2026)
6. Oct. 2026 Prime Data Centers Chicago Campus ORD01 · The operator's Chicago page listed ORD01-01 as operational and leased and ORD01-02 and ORD01-03 as in development and leased; ComEd is named as the utility. (Prime Data Centers, Oct. 22, 2026; Prime Data Centers, Oct. 1, 2025)
7. Oct. 2026 Digital Realty Elk Grove Village campus (CH1, CH2, CH3) · Digital Realty's Chicago page listed CH1 (485,000 sq ft), CH2 (328,000 sq ft) and CH3 (305,500 sq ft) in Elk Grove Village. (Digital Realty, Oct. 22, 2026; Digital Realty, Oct. 22, 2026; Digital Realty, Oct. 22, 2026; Digital Realty, Oct. 22, 2026)
8. Oct. 2026 Digital Realty ORD23, Northlake · Digital Realty listed ORD23 at 505 N. Railroad Ave., Northlake, with 186,500 sq ft. (Digital Realty, Oct. 22, 2026; Digital Realty, Oct. 22, 2026)
9. Oct. 2026 Centersquare (Csquare) ORD2, Elk Grove Village · The operator listed ORD2 at 2425 Busse Rd. with 25.9 MW of utility power and 111,906 sq ft listed size. (Csquare (Centersquare), Oct. 22, 2026; Csquare (Centersquare), Oct. 22, 2026)
10. Oct. 2026 Stream Data Centers Chicago II (ORDB) · Stream listed Chicago II at 1925 Busse Rd. as 32 MW and fully leased. (Stream Data Centers, Oct. 22, 2026)
11. Oct. 2026 Stream Data Centers Chicago I (ORDA) · Stream listed Chicago I at 2080 Lunt Ave. with 31 MW of utility power and 155,189 sq ft after a 2024 expansion. (Stream Data Centers, Oct. 22, 2026)
12. Oct. 2026 Stream Data Centers ORDC (Chicago III) · Stream listed ORDC at 2000 Landmeier Rd. as in development, with 40 MW in building one and 35+ acres. (Stream Data Centers, Oct. 22, 2026)
13. Oct. 2026 Iron Mountain CHI-1, Des Plaines · The operator listed CHI-1 at 1680 Touhy Ave. with a 36 MW IT design and 12 MW available now. (Iron Mountain, Oct. 22, 2026)
14. Oct. 2026 Skybox Chicago I, Elk Grove Village · Skybox listed the 30 MW site as available now, served by ComEd from the Itasca substation. (Skybox Datacenters, Oct. 22, 2026)
15. Oct. 2026 DataBank ORD3, Mount Prospect · DataBank listed ORD3 at 800 E. Business Center Dr. with 2.7 MW critical IT load and 28,950 IT sq ft, open 7x24x365. (DataBank, Oct. 22, 2026)
16. Sept. 23, 2026 Chicago: Moratorium (proposed) · Johnson and several aldermen introduced a 12-month moratorium on new data centers in the city while rules on pollution, water and power costs are written; a separate ordinance from Ald. Bill Conway would add zoning and review requirements. Both are pending before the City Council. (Axios Chicago, Sept. 23, 2026; Chicago Tribune (via GovTech), Sept. 23, 2026)
17. Sept. 16, 2026 400 S. LaSalle data center conversion · A second conversion permit, declared at $151.1 million, was issued. (GrayStak Media (Substack), Oct. 15, 2026; Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
18. Aug. 14, 2026 Nexstar / WGN transmitter site data center campus · Neighbors spoke against the plan; the mayor argued a truck depot would be a worse use of the site. (Daily Herald, Aug. 14, 2026)
19. Aug. 11, 2026 Chicago: Executive order · Mayor Brandon Johnson's Executive Order 2026-5 adds multi-agency review of energy, water, backup power, air, noise and community effects for data centers that need a new Planned Development, orders air-permit and noise rules within 90 days and task-force code proposals by March 15, 2027, and asks the City Council to pass a moratorium. (Bloomberg Government, Aug. 11, 2026; DLA Piper, Aug. 19, 2026)
20. July 15, 2026 QTS Chicago campus (2800 S. Ashland) · The Chicago Department of Buildings voided the construction permit for the new building after more than 120 days of inactivity, according to reporting credited to Block Club Chicago; because the permit was voided rather than denied, QTS could reapply. (Hoodline, July 15, 2026)
21. July 6, 2026 400 S. LaSalle data center conversion · Chicago issued a building permit for a conversion phase declared at $51.1 million. (GrayStak Media (Substack), Oct. 15, 2026; Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
22. June 30, 2026 Plum Farms data center rezoning (Karis Critical / H.E. Holdings) · An opponent released village emails, obtained through public records requests, in which staff described a draft development agreement that would limit the property to data center uses; village officials said staff proposals do not decide outcomes and that the application sought only rezoning. (Daily Herald, June 30, 2026)
23. June 30, 2026 Plum Farms data center rezoning (Karis Critical / H.E. Holdings) · Karis withdrew the rezoning request, and the village board meeting set to vote on it was canceled. (Capitol News Illinois (via WTTW News), July 1, 2026)
24. June 3, 2026 Plum Farms data center rezoning (Karis Critical / H.E. Holdings) · The Plan Commission voted 4-2 to recommend against the rezoning. (Capitol News Illinois (via WTTW News), July 1, 2026; Daily Herald, June 30, 2026)
25. June 2, 2026 Plum Farms data center rezoning (Karis Critical / H.E. Holdings) · Residents organized against rezoning the 186-acre Plum Farms land from commercial mixed-use and traditional neighborhood districts to manufacturing ahead of a Plan Commission hearing; the village said no site plan or specific project had been developed. (NBC Chicago, June 2, 2026)
26. Jan. 7, 2026 Aligned ORD-03, Northwest Point, Elk Grove Village · Aligned listed ORD-03 at 50 NW Point Blvd. on 36 acres and published material on its cooling design. (Aligned Data Centers, Oct. 22, 2026; Aligned Data Centers, Jan. 7, 2026)
27. Jan. 2026 Nexstar / WGN transmitter site data center campus · The village board extended the deadline to start the first building to Sept. 30, 2027. (Daily Herald, Aug. 14, 2026)
28. Dec. 8, 2025 Compass Datacenters ORD I (former Sears headquarters) · Precast walls were rising on the first two buildings; each of the five buildings will exceed 250,000 square feet and no tenant had been named. (Daily Herald, Dec. 8, 2025)
29. Nov. 17, 2025 400 S. LaSalle data center conversion · Legacy Investing and GI Partners announced a 33 MW conversion of the 300,500-square-foot building, aiming for more than 20 MW in service by early 2027. (Data Center Dynamics, Nov. 17, 2025)
30. Oct. 2025 400 S. LaSalle data center conversion · A Legacy Investing affiliate bought the former Cboe building for $40 million, according to Cook County records cited by the Sun-Times. (Chicago Sun-Times, Nov. 7, 2025)
31. Sept. 15, 2025 Stream Data Centers ORDC (Chicago III) · Stream and ComEd broke ground on a 260 MW substation for the campus, with construction under way. (T&D World, Sept. 15, 2025)
32. April 10, 2025 Microsoft Elk Grove Technology Park campus · The mayor said one Microsoft building was operating, a second was under construction and plans for a third had been submitted. (Daily Herald, April 10, 2025)
33. April 10, 2025 Nexstar / WGN transmitter site data center campus · The mayor described a four-building plan delayed while ComEd extends power to the site. (Daily Herald, April 10, 2025)
34. 2025 Digital Realty Franklin Park campus · The state incentive agreement was amended to add a parcel at 9311 W. Grand Ave. to the campus, which already covers 9333, 9355, 9377 and 9401 W. Grand Ave. and 2550 S. Martens St. (Illinois Department of Commerce and Economic Opportunity, 2026)
35. Dec. 17, 2024 QTS Chicago campus (2800 S. Ashland) · Urbanize Chicago reported that the City Council had approved the expansion, clearing the way for permitting. (Urbanize Chicago, Dec. 17, 2024)
36. Nov. 2024 QTS Chicago campus (2800 S. Ashland) · The Chicago Plan Commission approved the expansion, described as a $300 million project. (Data Center Dynamics, Dec. 2, 2024; Urbanize Chicago, Nov. 29, 2024)
37. Oct. 15, 2024 Aligned Chicago campus, Northlake (ORD-01, ORD-02) · The ORD-02 spec sheet listed 501 Northwest Ave. with 36 MW and 228,768 gross sq ft, growing to about 72 MW and 520,000 sq ft at full build. (Aligned Data Centers, Oct. 15, 2024; Aligned Data Centers, Oct. 22, 2026)
38. Sept. 2024 EdgeConneX Chicago campus (CHI01, CHI02, CHI03) · The operator's Chicago data sheet gave CHI01 at 24 MW and CHI02 at 7 MW and showed CHI03 (22.4 MW) as arriving soon. (EdgeConneX, Sept. 1, 2024)
39. Sept. 2024 Compass Datacenters ORD I (former Sears headquarters) · The village newsletter welcomed Compass to the 197-acre site it bought in September 2023. (Village of Hoffman Estates, Sept. 2024)
40. Aug. 29, 2024 Serverfarm CH1 (840 S. Canal) · A trade report described the modernization of the multistory building as nearing completion, with systems in final testing. (e-architect, Aug. 29, 2024)
41. Aug. 26, 2024 QTS Chicago campus (2800 S. Ashland) · QTS presented a three-story expansion of about 465,000 gross square feet at a 12th Ward community meeting; it required an amendment to Planned Development 553. (McKinley Park News, Sept. 9, 2024; Data Center Dynamics, Aug. 19, 2024)
42. July 15, 2024 Compass Datacenters ORD I (former Sears headquarters) · A village board committee unanimously approved mass grading and tree removal for Compass Datacenters ORD I at 3333 Beverly Road (draft minutes). (Village of Hoffman Estates, July 15, 2024)
43. June 13, 2024 Compass Datacenters ORD I (former Sears headquarters) · ComEd and Compass held a kickoff for five data center buildings on nearly 200 acres, with an on-site substation planned to be energized in mid-2026. (Business Wire (ComEd and Compass Datacenters release), June 13, 2024)
44. June 11, 2024 Prime Data Centers Chicago Campus ORD01 · The first building, ORD01-01, topped out. (DatacenterDynamics, June 11, 2024)
45. Feb. 22, 2024 Aligned ORD-03, Northwest Point, Elk Grove Village · The village approved a Class 6(b) incentive for two two-story buildings totaling more than 2 million sq ft, at a reported $285 million. (DatacenterDynamics, Feb. 22, 2024)
46. Feb. 7, 2024 Microsoft Hoffman Estates data center campus · The Planning and Zoning Commission held a public hearing on a preliminary and final site plan for Microsoft Data Center Phase 2 at 2190 Lakewood Blvd. (Village of Hoffman Estates, Feb. 7, 2024)
47. Jan. 5, 2024 Iron Mountain CHI-1, Des Plaines · Reporting said Iron Mountain had obtained Des Plaines building permits in September 2023 and could start the first building by March 2024. (DatacenterDynamics, Jan. 5, 2024)
48. Sept. 12, 2023 Stream Data Centers ORDC (Chicago III) · The village board approved ordinances for the campus, including industrial rezoning, road vacations and height variations up to 120 feet; the developer offered $950,000 to most homeowners. (Daily Herald, Sept. 13, 2023)
49. Sept. 6, 2023 Digital Realty Cermak campus (350 E. Cermak) · Prairie District residents and a neighborhood alliance organized against the second building, citing noise, shade and power demand; the 3rd Ward office held community meetings. (CBS News Chicago, Sept. 6, 2023)
50. Aug. 30, 2023 Stream Data Centers ORDC (Chicago III) · Plan commissioners unanimously recommended approval of the zoning request. (DatacenterDynamics, Aug. 30, 2023)
51. July 18, 2023 Nexstar / WGN transmitter site data center campus · The village and Nexstar entered the development agreement. (Daily Herald, Aug. 14, 2026)
52. June 29, 2023 Stream Data Centers ORDC (Chicago III) · Stream sought annexation and re-subdivision of parcels on Roppolo Drive, Richard Lane, Landmeier Road and Dierking Terrace for a three-building campus. (DatacenterDynamics, June 29, 2023)
53. June 29, 2023 Aligned ORD-03, Northwest Point, Elk Grove Village · Aligned bought neighboring parcels and submitted plans for a data center campus to the village, which sent it to public hearing. (DatacenterDynamics, June 29, 2023)
54. June 20, 2023 Nexstar / WGN transmitter site data center campus · The village board gave preliminary approval to annexation, rezoning and a special use permit for three data center buildings of about 840,000 sq ft plus a future substation, with final approval set for July 18. (Daily Herald, June 21, 2023)
55. April 14, 2023 Aligned ORD-03, Northwest Point, Elk Grove Village · Aligned bought a 177,000 sq ft office building on 10 acres at 50 Northwest Point Blvd. (DatacenterDynamics, April 14, 2023)
56. April 13, 2023 Digital Realty Cermak campus (350 E. Cermak) · The developer cut the planned height to 271 feet and the floor area ratio from 10 to 7; a 2014 planned-development approval for the site had lapsed, so Plan Commission, zoning committee and council review were needed again. (Urbanize Chicago, April 13, 2023)
57. March 21, 2023 Microsoft Hoffman Estates data center campus · Construction of the first building was reported complete, with interior work and the second building continuing into 2024. (REjournals, March 21, 2023)
58. Feb. 14, 2023 Microsoft Hoffman Estates data center campus · Microsoft bought about 30 adjacent acres; the first of two approved buildings was under construction. (Daily Herald, Feb. 14, 2023)
59. 2023 Serverfarm CH1 (840 S. Canal) · Illinois DCEO approved Serverfarm LLC (SF CH1 LLC) in Chicago for the Data Center Investment Program with a $285 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
60. Nov. 18, 2022 Prime Data Centers Chicago Campus ORD01 · Prime broke ground on the campus at 1600 E. Higgins Rd., describing 175 MW across three buildings. (DatacenterDynamics, Nov. 18, 2022)
61. Nov. 7, 2022 Digital Realty Franklin Park campus · ComEd and Digital Realty opened a new four-acre substation on the Franklin Park campus to add power capacity. (ComEd (posted by Village of Franklin Park), Nov. 7, 2022)
62. Sept. 23, 2022 Digital Realty Cermak campus (350 E. Cermak) · A Digital Realty affiliate, Digital Lakeside 3 LLC, filed with the City Council to rezone the vacant lot at 321-337 E. 21st St. for a 565,000-square-foot, 13-story data center linked by bridge to 350 E. Cermak. (Data Center Dynamics, Sept. 23, 2022)
63. May 27, 2022 Prime Data Centers Chicago Campus ORD01 · Reporting described the village buying a nearly 5-acre concrete-recycling site on Midway Court for $16.5 million, the last major parcel for the campus, and planning a short-lived TIF district to help pay for cleanup. (Daily Herald, May 27, 2022)
64. May 2, 2022 Skybox Chicago I, Elk Grove Village · Prologis and Skybox announced completion of the spec building at 800 E. Devon Ave. on a 10-acre site. (REBusiness Online, May 2, 2022)
65. April 19, 2022 Aligned Chicago campus, Northlake (ORD-01, ORD-02) · Aligned launched ORD-01 and broke ground on the adjacent ORD-02. (Aligned Data Centers, April 19, 2022)
66. Feb. 1, 2022 EdgeConneX Chicago campus (CHI01, CHI02, CHI03) · Village officials endorsed a Class 6B tax break for a two-story, 22 MW, 167,000 sq ft building on Lunt Avenue estimated at $210 million. (DatacenterDynamics, Feb. 1, 2022)
67. Jan. 12, 2022 Skybox Chicago I, Elk Grove Village · Building work on the 30 MW, 189,000 sq ft facility was reported complete. (DatacenterDynamics, Jan. 12, 2022)
68. Sept. 14, 2021 Prime Data Centers Chicago Campus ORD01 · The Elk Grove Village board approved a redevelopment agreement with Prime for a 150 MW, three-building campus valued at $1 billion. (Village of Elk Grove Village, Sept. 14, 2021)
69. Aug. 23, 2021 EdgeConneX Chicago campus (CHI01, CHI02, CHI03) · Reporting described a $62 million plan to convert a warehouse at 2021 Lunt Ave. into a 7 MW data center, with village backing for a Class 6B tax break. (Daily Herald, Aug. 23, 2021)
70. May 4, 2021 Aligned Chicago campus, Northlake (ORD-01, ORD-02) · Construction began on ORD-01, a 48 MW first building on an 18.5-acre site at 505 Northwest Ave. (REjournals, May 4, 2021)
71. May 2021 Microsoft Hoffman Estates data center campus · The village board approved the first building and site work for a two-phase, two-building campus on 53 acres. (DatacenterDynamics, May 19, 2021)
72. Feb. 19, 2021 Microsoft Elk Grove Technology Park campus · Construction of the first of three planned buildings, about 400,000 sq ft in all, was reported under way after Microsoft filed applications with the village. (DatacenterDynamics, Feb. 19, 2021; Telecom Review Americas, Feb. 28, 2021)
73. Feb. 9, 2021 Skybox Chicago I, Elk Grove Village · Village trustees granted a Class 6B tax break for the $13.7 million warehouse conversion. (DatacenterDynamics, Feb. 19, 2021)
74. 2021 QTS Chicago campus (2800 S. Ashland) · Illinois DCEO approved QTS's Chicago site for the Data Center Investment Program with a $250 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
75. Dec. 8, 2020 Stream Data Centers Chicago II (ORDB) · Stream announced its second Chicago-area data center in a 215,000 sq ft industrial building, planned for 32 MW. (Stream Data Centers, Dec. 8, 2020)
76. Jan. 22, 2020 Microsoft Elk Grove Technology Park campus · Microsoft bought more than 36 acres in the Elk Grove Technology Park for $52.2 million. (Daily Herald, Jan. 22, 2020)
77. 2020 Digital Realty Franklin Park campus · Illinois DCEO approved Digital Realty's Franklin Park site for the Data Center Investment Program with a $404.5 million investment commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
78. June 13, 2013 Serverfarm CH1 (840 S. Canal) · Server Farm Realty opened the 840 S. Canal building as a data center, with 4 MW of critical power available and room for up to 20 MW. (Data Center Knowledge, June 13, 2013)
79. July 20, 2009 Microsoft Chicago data center, Northlake · The 700,000 sq ft facility began operations; Microsoft showed it to media and local officials that September. (Data Center Knowledge, Sept. 30, 2009)
80. Nov. 8, 2007 Microsoft Chicago data center, Northlake · Reporting described Microsoft's planned Northlake project with a 40 MW power feed expandable to 60 MW. (Data Center Knowledge, Nov. 8, 2007)

Statewide

20 ILCS 605/605-1025, created by Public Act 101-0031 (2019) and amended by P.A. 101-0604, 102-0427 and 102-0558, lets DCEO certify data centers that invest at least $250 million and add 20 full-time jobs paying at least 120% of the county average wage, with green or carbon-neutral certification within two years and a project labor agreement; certified centers and tenants get state and local sales and use tax exemptions for up to 20 years plus an income tax credit under Section 229, and the statute bars new certificates after July 1, 2029. (Illinois General Assembly, undated) DCEO's 2025 annual report counts 34 certified data centers as of Dec. 31, 2025 (35 applications, one withdrawn or denied), with $10.67 billion in committed investment, 731 promised jobs and an estimated $666.6 million in tax benefits, figured at 6.25% of committed investment; Elk Grove Village has 14 of the 34 sites and Chicago 5. (Illinois Department of Commerce and Economic Opportunity, 2026) Gov. JB Pritzker proposed a two-year suspension of the incentive in his February 2026 budget address; lawmakers did not enact it, so on June 5, 2026 he directed DCEO to stop processing new Data Center Investment Program agreements from July 1, 2026, while honoring agreements signed before then. The statute itself was not amended. (Office of Gov. JB Pritzker, June 5, 2026; Capitol News Illinois, June 5, 2026; NPR Illinois (Medill Illinois News Bureau / Capitol News Illinois), Feb. 20, 2026) Senate Bill 25, the Clean and Reliable Grid Affordability Act, passed the House 70-37 and Senate 37-22 in the October 2025 veto session and was signed Jan. 8, 2026 as Public Act 104-0458, effective June 1, 2026; for data centers it requires new backup generators in construction-permit applications filed with Illinois EPA on or after Dec. 1, 2026 to meet Tier 4 or Tier 4-equivalent (diesel) or Tier 2 spark-ignition (gas) emission standards, with no change for existing engines. (Illinois Power Agency, 2026; ABC7 Chicago (Capitol News Illinois), Nov. 1, 2025; ALL4, June 11, 2026; NPR Illinois (Medill Illinois News Bureau / Capitol News Illinois), Feb. 20, 2026) The POWER Act, SB4016 (Sen. Ram Villivalam) and HB5513 (Rep. Robyn Gabel), would bar shifting data center grid costs to other customers, require hyperscale centers to bring new clean capacity, add water permits and reporting, fees for public-benefit funds and community benefit agreements, and ban local nondisclosure agreements; SB4016 has sat in Senate Assignments since February 2026 and HB5513 was sent back to House Rules March 27, 2026. Neither passed by the May 31 adjournment, and as of Oct. 16, 2026 talks were aimed at the Nov. 17-19 and Dec. 1-3 veto session. (Illinois General Assembly, Feb. 17, 2026; LegiScan, Aug. 26, 2026; Illinois Environmental Council, June 1, 2026; Capitol News Illinois, June 5, 2026; The Center Square (via Cities 92.9), Oct. 16, 2026; WAND News, Oct. 16, 2026) ICC Docket Nos. 25-0677 and 25-0679 (consolidated): on March 19, 2026 the commission approved ComEd's revisions to its General Terms and Conditions and Rider DE for large demand project applicants (50 MW or more). The deposit is $1 million for 50-200 MW plus $500,000 for each further 100 MW, a letter of credit is required when the deposit would exceed $2 million, and the new tariff does not apply to data centers already on the grid. The commission ordered staff to start a wider ratepayer-protection proceeding by April 23, 2026, to finish within about eight months; that docket number was not found in sources opened. (NRG Energy (filing in ICC Docket Nos. 25-0677/25-0679), Nov. 10, 2025; NPR Illinois (Capitol News Illinois), March 20, 2026; Environmental Law & Policy Center, March 20, 2026; pv magazine USA, March 23, 2026; Edison Electric Institute, Oct. 9, 2026) ComEd also signs Transmission Security Agreements with large loads; a ComEd fact sheet counts eight, covering more than $2 billion in revenue security, and EEI lists TSAs for an Equinix 700 MW data center in Minooka and a Tract campus of up to 1,000 MW in Morris. Capitol News Illinois reported more than 75 large-load projects seeking over 28,000 MW from ComEd (the fact sheet cites 30,000 MW of requests over three years), against a record peak of about 24,000 MW. No Ameren Illinois large-load tariff filing was found in the sources opened. (ComEd (posted by City of Morris), undated; Edison Electric Institute, Oct. 9, 2026; NPR Illinois (Capitol News Illinois), March 20, 2026) No statewide siting rule appears in the sources opened; Gov. Pritzker says each community should decide whether it wants a data center, and in October 2026 House Republican Leader Tony McCombie proposed keeping siting with municipalities while barring approvals within three miles of residential areas; no bill number was given in the reporting. (WAND News, Oct. 16, 2026) Illinois data centers →