DuPage County

Moratoriums and bans

1. July 2026 West Chicago: Moratorium. City Council passed Ordinance 26-O-0011, a 180-day stop on new permits and approvals for data centers and battery storage while it weighs new rules; it does not reach a data center already under construction on W. Washington Street. The 60185 Podcast reported a 12-0 vote on July 6; the Daily Herald gives July 20. (60185 Podcast (Substack), July 6, 2026; Daily Herald, Aug. 13, 2026)

Updates, newest first

1. Oct. 22, 2026 CyrusOne Aurora campus (CHI1-CHI3) · CyrusOne's Aurora page lists CHI1-CHI3 with 114 MW of IT capacity on 16 acres. (CyrusOne, Oct. 22, 2026)
2. Oct. 15, 2026 Centersquare (Csquare) ORD4, Lisle · Colocation Scout's Chicago map, built from PeeringDB facility listings, shows Centersquare Chicago ORD4 in Lisle among operating facilities. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
3. Oct. 2026 Centersquare (Csquare) ORD4, Lisle · The operator listed ORD4 at 4513 Western Ave., Lisle, with 88.9 MW utility power and 66,875 sq ft listed size. (Csquare (Centersquare), Oct. 22, 2026; Csquare (Centersquare), Oct. 22, 2026)
4. July 2026 West Chicago: Moratorium · City Council passed Ordinance 26-O-0011, a 180-day stop on new permits and approvals for data centers and battery storage while it weighs new rules; it does not reach a data center already under construction on W. Washington Street. The 60185 Podcast reported a 12-0 vote on July 6; the Daily Herald gives July 20. (60185 Podcast (Substack), July 6, 2026; Daily Herald, Aug. 13, 2026)
5. May 5, 2026 NTT DATA Chicago campus (Itasca) · The village board approved the CH5 site plan on Marino Court, 5-0 (Ordinance 2178-26), per a compilation of village records. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
6. April 2026 NTT DATA Chicago campus (Itasca) · The village reported two buildings operating, CH3 and the substation under construction, early site work on a fourth building, and a fifth site plan before the board. (Village of Itasca, April 2026)
7. Jan. 21, 2026 Cloud Centers data center (711 Ogden Ave., Lisle) · Lisle heard a planned-unit-development application for an approximately 50 MW data center on 18.5 acres at 711 Ogden Ave.; the request did not proceed. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
8. 2026 Cloud Centers data center (711 Ogden Ave., Lisle) · Lisle later removed data centers as a permitted use, per the same compilation, which does not tie that change to this project. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026)
9. Oct. 20, 2025 CyrusOne Wood Dale campus (Bryn Mawr) · Wood Dale's Community Development Commission scheduled a hearing on a final Phase I plan to allow Building 2, citing revised plans driven by prospective tenant needs, across the 24-acre Bryn Mawr II and 42-acre Bryn Mawr III properties. (City of Wood Dale, Sept. 10, 2025)
10. May 13, 2025 CyrusOne Wood Dale campus (Bryn Mawr) · CyrusOne topped out two buildings totaling more than 500,000 square feet with 18 MW of initial IT capacity. (CyrusOne, May 13, 2025; Data Center Dynamics, May 21, 2025)
11. March 6, 2025 CyrusOne Wood Dale campus (Bryn Mawr) · DuPage County's economic development group described the project as six data centers totaling about 1.4 million square feet, due for completion by 2032. (Choose DuPage, March 6, 2025)
12. Jan. 16, 2025 CyrusOne Wood Dale campus (Bryn Mawr) · Wood Dale approved the 42-acre Bryn Mawr III phase, four buildings of about 996,850 square feet, 7-0 (case CDC-2024-0007), per a compilation of city records; the city's 2025 notice confirms council approval of the 42-acre redevelopment in January 2025. (Colocation Scout (powered by Bridgepointe Technologies), Oct. 15, 2026; City of Wood Dale, Sept. 10, 2025)
13. 2025 Centersquare (Csquare) ORD4, Lisle · Illinois DCEO approved 4513 Western Avenue LLC (CenterSquare ORD4) in Lisle for the Data Center Investment Program with a $258.4 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
14. Nov. 28, 2024 Oppidan Carol Stream data center · Oppidan broke ground; the end user is under a nondisclosure agreement. (DatacenterDynamics, Nov. 28, 2024; Power Construction, Nov. 2024)
15. Oct. 2024 CyrusOne Bilter Road campus (Aurora) · Construction began on the Bilter Road buildings, according to Data Center Dynamics. (Data Center Dynamics, May 21, 2025)
16. Sept. 2024 Oppidan Carol Stream data center · Carol Stream issued building permits after receiving the application in April 2024. (DatacenterDynamics, Nov. 28, 2024)
17. June 4, 2024 CyrusOne Bilter Road campus (Aurora) · Plans filed with Aurora showed two buildings of about 411,000 and 150,000 square feet on 32 acres in the Butterfield planned development, plus telecom towers. (Connect CRE, June 4, 2024)
18. Jan. 30, 2024 CyrusOne Bilter Road campus (Aurora) · CyrusOne was negotiating with Aurora over a 30-acre Bilter Road parcel where data centers had been barred; the city sought to recover up to $11 million it had spent on a nearby highway interchange, plus hotel revenue it would forgo. (Bisnow, Jan. 30, 2024)
19. 2024 NTT DATA Chicago campus (Itasca) · Over 2023 and 2024 the village board approved the five-building campus and a dedicated substation; the village lists Ordinances 2081-23, 2095-23, 2108-24 and 2119-24 among its approvals. (Village of Itasca, April 2026)
20. 2024 CyrusOne Wood Dale campus (Bryn Mawr) · Illinois DCEO approved C1 Chicago 1 LLC and C1 Chicago 2 LLC in Wood Dale for the Data Center Investment Program with a $250 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
21. 2022 CyrusOne Aurora campus (CHI1-CHI3) · Illinois DCEO approved CyrusOne (C1 Chicago) in Aurora for the Data Center Investment Program with a $250 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
22. 2020 NTT DATA Chicago campus (Itasca) · Illinois DCEO approved NTT Global Data Centers in Itasca for the Data Center Investment Program with a $276 million commitment. (Illinois Department of Commerce and Economic Opportunity, 2026)
23. 2017 NTT DATA Chicago campus (Itasca) · Itasca approved its first data center in Hamilton Lakes in 2017; the village's list of NTT approvals begins with Resolution 981-17. (Village of Itasca, April 2026)
24. May 11, 2016 CyrusOne Aurora campus (CHI1-CHI3) · CyrusOne announced plans for a 500,000-square-foot expansion on about 15 acres of land included in the purchase, with CME staying as anchor tenant. (Data Center Dynamics, May 11, 2016)
25. March 16, 2016 CyrusOne Aurora campus (CHI1-CHI3) · CyrusOne bought CME Group's 428,000-square-foot Aurora data center for $130 million. (Data Center Dynamics, March 16, 2016)

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 →