Data center profile · 13000 block of Thayer Road, Waverly, Talkington Township, Sangamon County, Illinois

CyrusOne Sangamon Campus (Waverly, IL)

CyrusOne's four-building, 634 MW (as reported) campus on 280 acres southwest of Springfield, Illinois; zoned Apr. 2026, lawsuit pending, power letter does not cover it.

Zoned, under challenge. The county board granted a conditional use 17-10 on Apr. 7, 2026, with four conditions to meet before any building permit. No land sale is recorded, no building permit or air permit exists, and residents' lawsuit filed July 6, 2026 is unresolved.
Sangamon parcels, Satellite image, Oct. 23, 2025
634 MW
capacity at full buildout, per CyrusOne (press)
originally ~600 MW in six buildings; MISO studied phases of 336 MW and 300 MW; IT capacity not published
$500M
investment framed by the county and committed in the state tax-break deal
minimum under the state agreement, with 25 full-time jobs
280 acres
four buildings of about 450,000 sq ft each (1.8M sq ft)
still owned by Dowson Farms; no sale recorded
17-10
county board vote granting the conditional use on Apr. 7, 2026
one abstention; tabled 15-13 on Mar. 23 first
OperatorCyrusOne (owned by KKR and Global Infrastructure Partners), through C1 Sangamon I LLC
CustomerNone named; CyrusOne is a colocation developer
Planned IT capacity507 MW at full build-out (our estimate from the company's 634 MW campus power figure)
First building in serviceOur estimate: 2029 or later (no dated power path yet).
Next stepCourt hearing on the county's motion to dismiss the residents' suit (no new date set after the Oct. 9 postponement)
From orbit

The site from above

Satellite overview1
Satellite image, Oct. 23, 2025. Pin: Sangamon parcels, summer farmland.
From orbit

Sangamon parcels

Satellite views of the same ground on June 6, 2016 and Oct. 23, 2025. Drag to compare.

after
before
◀ Satellite image, June 6, 2016Satellite image, Oct. 23, 2025 ▶
Power

Power and the grid

None energized or contracted yet

Rural Electric Convenience Cooperative (RECC) grid service via Ameren Illinois transmissionPlanned, no service agreement
634 MW
CyrusOne's full-buildout figure; MISO cleared phase 1 (336 MW) and phase 2 (300 MW) was under study as of Nov. 2025; no contracted MW is public Company · Oct. 2026
Proposed
Backup generators (emergency use, not a power supply)

Getting on the grid

Who supplies what, what it costs, and what is still not public.

  1. Aug. 26, 2025
    Co-op letter names a different project
    RECC's will-serve letter covers the smaller Diamond Core project, not CyrusOne. News report · Oct. 2026
  2. Nov. 2025
    MISO clears phase 1
    MISO says the 336 MW first phase will not hurt other grid users; the 300 MW second phase is under study. News report · Oct. 2026
  3. April 7, 2026
    County requires an updated co-op letter
    An RECC will-serve letter covering the entire project is a condition before any building permit. Local government · Oct. 2026
  4. As of Oct. 2026
    No service agreement or state filing
    RECC does not disclose member contracts, and no state commission docket exists for this load. Utility regulator · Oct. 2026
  5. Not set
    Second-phase power: not confirmed
    No MISO result for the 300 MW phase has been published since Nov. 2025. News report · Oct. 2026
Permits

Permits checklist

1 contested · 4 granted · 3 checked, nothing on file

Approvals a campus like this normally needs (including an air permit for backup generators), and what we found.

Risks

What could slow it down

Lawsuits

1 case on record

Money

Money on record

$500M
investment framed by the county and the state tax-break agreement
also 25 full-time jobs and wages at 120% of the county average News report · Oct. 2026
20 years
state sales-tax exemptions on equipment and building materials
agreement signed before the July 1, 2026 pause; clawback terms not public News report · Oct. 2026
$15M+
community commitments from CyrusOne (company)
schools, workforce, emergency services Company · Oct. 2026
$98M
projected property tax over 20 years
about $6M a year at full buildout Local government · Oct. 2026

Not on record: land purchase from Dowson Farms: not closed, no sale in county records as of Oct. 2026 News report · Oct. 2026

Timeline

What happened, and what is due

SitePaper trailConstructionPowerPermitsMoneyLegalUpcoming
  1. Aug. 2024
    Site Diamond Core Datacenter signs a letter of intent to buy the same 280 acres News report · Oct. 2026
  2. Feb. 2025
    Site Developer Swift Current Energy introduces CyrusOne to county zoning staff News report · Oct. 2026
  3. July 8, 2025
    Permits County board unanimously adopts its data-center ordinance Local government · Oct. 2026
  4. Oct. 2025
    Permits C1 Sangamon files for a conditional use: six buildings, about 600 MW Local government · Oct. 2026
  5. Nov. 19, 2025
    Paper trail C1 Sangamon I LLC registered in Delaware and Illinois
  6. Feb. 19, 2026
    Permits Zoning board recommends approval 5-0 of an amended 634 MW plan; a 180-day moratorium is voted down News report · Oct. 2026
  7. March 23, 2026
    Permits County board tables the approval 15-13 before 700+ residents Local government · Oct. 2026
  8. April 7, 2026
    Permits County board grants the conditional use, 17-10 with one abstention Local government · Oct. 2026
  9. July 1, 2026
    Site State pauses new data-center tax-break certifications; CyrusOne's agreement predates it News report · Oct. 2026
  10. July 6, 2026
    Legal Neighbors sue the county, the board and C1 Sangamon News report · Oct. 2026
  11. Sept. 11, 2026
    Legal Hearing on the county's motion to dismiss; decision pending News report · Oct. 2026
  12. Oct. 9, 2026
    Legal Scheduled hearing postponed; no new date; county records still show no land sale News report · Oct. 2026
  13. 2027
    Site Construction could start as early as 2027 (press), after a building permit News report · Oct. 2026
Construction activity

Satellite captures by quarter

Since June 2016: 3 satellite captures. The chart starts in the first quarter of 2023; 1 earlier record is not drawn.

Satellite
’23
’24
’25
’26
Dot size: records in the quarter, largest = 1. Two-digit years mark each first quarter.
The buildings

Specs

4 buildings
about 450,000 sq ft each, 1.8M sq ft total
Local government · Oct. 2026
50 dB
noise limit at the property line next to homes
Local government · Oct. 2026
150 ft / 250 ft
perimeter setback / minimum setback from residences
Local government · Oct. 2026
500 construction / 100+ permanent jobs
company projections; the state deal requires only 25
Company · Oct. 2026
Who is involved

Owners, partners and builders

Owners and developers
  • CyrusOne: developer and operator, owned by KKR and Global Infrastructure Partners
  • C1 Sangamon I LLC: applicant and contract purchaser
  • Dowson Farms: landowner
  • Diamond Core Datacenter LLC and Swift Current Energy: original site developers
Decision-makers
  • Sangamon County Board and Zoning Board of Appeals: granted the conditional use
  • Illinois DCEO: tax-break counterparty
  • Judge Adam Giganti: presiding over the lawsuit
Power and water
  • Rural Electric Convenience Cooperative: retail electric service
  • Ameren Illinois and MISO: transmission and grid review
  • NextEra Energy Marketing: RECC's wholesale supplier
  • Apple Creek Water Cooperative: water service
Opponents
  • Coalition for Springfield's Utility Future and neighboring residents
Still unknown

Open questions

Where this comes from

241 records from 32 documents

Drawn from news reports, local government records, state agency records, business registries, securities filings, public and commercial datasets, company statements, utility regulator dockets and satellite captures, each kept with its date and source. The bar shows documents by type.

News report 14Local government 6State agency 6SEC filing 3Dataset 2Company 1Utility regulator 1Satellite 0
Evidence

Every quote behind this page

Grade key: A = the primary record itself (permit, filing, exhibit) · B = a dated official statement · C = news reporting. Map distances are our own measurements on OpenStreetMap and carry no grade. Allegations in lawsuits are marked as such in the quotes.

Power (29)
  • Utility: Rural Electric Convenience Cooperative (RECC) - retail electric service; transmission through Ameren Illinois infrastructure
    “Electricity delivered by the Rural Electric Convenience Cooperative and transmitted through Ameren Illinois infrastructure”
    Local government · Oct. 2026 · grade A
  • Interconnection status: Load reviewed by Ameren Transmission and MISO; county staff report states no reliability or transmission-planning issues found; developer pays all transmission upgrades
    “Load reviewed by Ameren Transmission and MISO; no reliability or transmission-planning issues found; CyrusOne pays for all transmission upgrades”
    Local government · Oct. 2026 · grade A
  • Grid operator: MISO
    “Load reviewed by Ameren Transmission and MISO (Midcontinent Independent System Operator)”
    Local government · Oct. 2026 · grade A
  • C1 Sangamon I LLC files the conditional-use petition (Case 2025-019): 6 buildings, ~1.4M sq ft, ~600 MW as originally framed
    “Zoning Case #2025-019; petitioner C1 Sangamon I LLC; site inspected 10/29/2025”
    Local government · Oct. 2026 · grade A
  • Nearest power line of 345 kV or more: 1.51 km
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Nearest substation of 345 kV or more: none within 16km
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Nearest gas pipeline: 6.43 km (, Pleasant Hill Discharge)
    Measured on OpenStreetMap map data.
    OpenStreetMap · Oct. 2026
  • Filing record: No SEC filing states a campus MW figure; the applicant entity C1 Sangamon I LLC has zero EDGAR footprint
    “No SEC filing states a campus MW figure for this campus”
    SEC filing · Oct. 2026 · grade B
  • IT capacity: not stated
    “No IT-load figure published by CyrusOne, the county, or any regulator for this campus”
    Company · Oct. 2026 · grade B
  • Utility service: not stated
    “RECC does not disclose the specifics of individual member agreements; no contracted campus capacity published”
    Utility regulator · Oct. 2026 · grade B
  • On-site generation: not stated
    “Backup generators are used only for emergency situations and required maintenance testing (10-15 hours per year)”
    Company · Oct. 2026 · grade B
  • Power plan: grid
    “The facility will be served by the local grid through the Rural Electric Convenience Cooperative (RECC), with wholesale electricity transmitted via Ameren Illinois transmission lines”
    Company · Oct. 2026 · grade B
  • Power supply: RECC buys wholesale power through a long-term agreement with NextEra Energy Marketing (power supply about 57% of RECC expenses)
    “the cooperative buys its wholesale power through a long-term agreement with NextEra Energy Marketing, and power supply costs make up about 57% of RECC expenses”
    Utility regulator · Oct. 2026 · grade B
  • Electric service agreement signed: not stated
    “We don't disclose the specifics of these contracts; data centers have special rates tied directly to market prices”
    Utility regulator · Oct. 2026 · grade B
  • Cooling: Closed-loop, air-cooled; initial fill approximately 280,000 gallons trucked in; no daily cooling draw after fill
    “Our facilities use closed-loop cooling technology that minimizes water consumption; water usage comparable to a standard office building”
    Company · Oct. 2026 · grade B
  • Jurisdiction: Sangamon County had jurisdiction: unincorporated Talkington Township site; data centers require a CPU in the A district under Ch. 17.39 (adopted Jul 8, 2025). No state preemption of county data-center zonin
    “On July 8, 2025, the text amendment (Res 4-1) was presented at the County Board and passed with a unanimous vote”
    Local government · Oct. 2026 · grade B
  • County publishes its data-center FAQ framing a 600 MW power demand (original application figure)
    “How will the 600 MW power demand affect the local Ameren grid”
    Local government · Oct. 2026 · grade B
  • Stated campus size: 634 MW
    “CyrusOne has stated that the campus will use up to 634MW of capacity at full buildout”
    News report · Oct. 2026 · grade C
  • Backup generators: 420 units
    “Each building would have 105 diesel-powered electric generators, each the size of a semitrailer, for a total of 420”
    News report · Oct. 2026 · grade C
  • Phases: 2 power phases studied by MISO (336 MW phase 1; 300 MW phase 2); buildings est. 12-18 months each
    “Phase two, which would require 300 megawatts, is currently under study, according to MISO spokesperson Jay Hermacinski”
    News report · Oct. 2026 · grade C
  • Utility commission docket: NO DOCKET FOUND
    “Negative result; positive control: ICC Docket 25-0679 (ComEd large-demand proposal) documents retrieved from icc.illinois.gov”
    Utility regulator · Oct. 2026 · grade C
  • MISO confirms phase 1 (336 MW) can be served; phase 2 (300 MW) under study (MISO spokesperson via Illinois Times)
    “Phase two, which would require 300 megawatts, is currently under study, according to MISO spokesperson Jay Hermacinski”
    News report · Oct. 2026 · grade C
  • Amended application (4 buildings, 1.8M sq ft, 634 MW) recommended for approval by the ZBA 5-0; county zoning committee votes down a 180-day moratorium the same day
    “Each building would have 105 diesel-powered electric generators, for a total of 420”
    News report · Oct. 2026 · grade C
  • FERC issues show-cause orders to RTOs (incl. MISO) on whether large loads pay their fair share of transmission costs - regulatory context for phase-2-type load studies
    “The Federal Energy Regulatory Commission issued show cause orders on June 18 to the nation's various electric grid operators”
    News report · Oct. 2026 · grade C
  • MISO files its LARS fast-track large-load study process at FERC (loads over 200 MW paired with new generation) - the likely framework for any phase-2 (300 MW) study going forward
    “MISO asked FERC to approve a fast-track process for studying planned large loads with the new generation that will supply them”
    News report · Oct. 2026 · grade C
  • Stated campus size: 634 MW
    “CyrusOne has stated that the campus will use up to 634MW of capacity at full buildout, use a closed-loop cooling technology”
    News report · Oct. 2026 · grade C
  • Stated campus size: 634 MW
    “CyrusOne has stated that the campus will use up to 634MW of capacity at full buildout, use a closed-loop cooling technology”
    News report · Oct. 2026 · grade C
  • Utility: Rural Electric Convenience Cooperative (RECC)
    “RECC will be the operator of the grid the data center runs off of”
    News report · March 2026 · grade C
  • Interconnection status: RECC (Rural Electric Convenience Cooperative) distribution service, transmission via Ameren / MISO; RECC's CEO told the Sangamon County Board in Mar 2026 that MISO and Ameren Transmission approved
    “RECC will be the operator of the grid the data center runs off of”
    News report · March 2026 · grade C
Money and contracts (38)
  • Square feet: 1800000 sq ft
    “4 buildings x approximately 450,000 sq ft = approximately 1.8M sq ft”
    Local government · Oct. 2026 · grade A
  • Property tax projected: 98000000 USD over 20 years
    “Property taxes projected $98M over 20 years (Supervisor of Assessments, independently reviewed); about $6M per year at full buildout”
    Local government · Oct. 2026 · grade A
  • Setbacks ordinance: Perimeter 150 ft from property lines; residential structure setback min 250 ft, or 10x building height for structures over 25 ft (ag district, as adopted)
    “The current perimeter setback from the data center structure project area to the property line is 150 feet; residential structure setback is a minimum of 250 feet with a multiplier of 10”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): condition precedent
    “Sangamon County Highway Department final approval (Exhibit F)”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): condition precedent
    “Sangamon County Department of Public Health final approval (Exhibit H)”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): condition precedent
    “updated RECC will-serve letter indicating availability to serve the ENTIRE project”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): condition precedent
    “definitive Apple Creek Water Cooperative will-serve letter determining the method of water service, or necessary site plan modifications”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): scope 280 acres
    “The resolution was adopted and the zoning was granted (YEAS 17, NAYS 10, Thomas abstaining)”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use (Zoning Case 2025-019): termination
    “FINDING: no sunset, expiry, lapse, or revocation clause for the CPU appears in Ch. 17.39 as reproduced in the county Exhibit A or in the staff recommendation; the adopted resolution PDF is scanned and unextractable - browser pass flagged”
    Local government · Oct. 2026 · grade A
  • Certificate of compliance (Ch. 17.39.050): condition precedent
    “Before a building permit is issued: updated site plan, emergency plan to the fire district, all required studies and approvals, EcoCAT results, and SHPO consultation”
    Local government · Oct. 2026 · grade A
  • Certificate of occupancy (annual): term 500 USD/yr
    “A Certificate of Occupancy approval will be issued annually on the completion date; annual fee $500”
    Local government · Oct. 2026 · grade A
  • Agricultural Impact Mitigation Agreement: scope
    “Agricultural Impact Mitigation Agreement with the Illinois Department of Agriculture; drainage and surrounding farmland protected”
    Local government · Oct. 2026 · grade A
  • Road access approval (Ch. 17.39.040(E)): condition precedent
    “Approval from the County Engineer and respective Road District Commissioner authorizing access to any public roadway”
    Local government · Oct. 2026 · grade A
  • This campus's tree entities file already records CyrusOne Holdco LLC as sponsor parent (Form D issuer); NOT A COLLATERAL MATCH: the entity is the sponsor parent, the deals are portfolio pools with no public property sche
    “Independent Accountants’ Agreed-Upon Procedures Report CyrusOne Holdco LLC (the “Company”)”
    SEC filing · Jan. 2025 · grade A
  • Tenants: not stated
    “Colocation developer-operator model; no tenant named on the company project FAQ or in the county record”
    Company · Oct. 2026 · grade B
  • Tenant status: not stated
    “No tenant in the county record; CyrusOne told the board tenants typically procure their own power”
    Local government · Oct. 2026 · grade B
  • Stated capital cost: 500000000 USD
    “County project page frames a $500 million data center development; $500M is also the DCEO MOU minimum-investment commitment”
    Local government · Oct. 2026 · grade B
  • State tax incentive MOU (DCEO Data Center Investment Program): benefit 20 years
    “DCEO Data Center Investment Program: certificates of exemption from state and local sales taxes for qualifying data centers”
    State agency · Oct. 2026 · grade B
  • State tax incentive MOU (DCEO Data Center Investment Program): termination
    “FINDING: the MOU's own noncompliance terms are not public; the program rule (14 Ill. Adm. Code 521.110) provides temporary revocation of exemption certificates if a certified data center is not complying with the MOU”
    State agency · Oct. 2026 · grade B
  • Electric service agreement (RECC): finding
    “FINDING: RECC states each industrial member has a unique agreement and it does not disclose specifics; no executed ESA, tariff filing, or contracted MW for this campus is public”
    Utility regulator · Oct. 2026 · grade B
  • Transmission cost responsibility: cost responsibility
    “CyrusOne will pay for all transmission line upgrades and infrastructure improvements required to power this facility; residents will not pay for these upgrades”
    Company · Oct. 2026 · grade B
  • Community investment commitments: scope 15000000 USD
    “More than $15 million committed to support schools, workforce development, emergency response services, economic development, and infrastructure improvements”
    Company · Oct. 2026 · grade B
  • Incentives: Illinois DCEO Data Center Investment Program MOU: sales-tax exemptions (20 yrs) on qualifying equipment/building materials; secured before the Governor's Jul 1, 2026 pause on new certifications
    “CyrusOne said the Sangamon County site had secured a state tax break before the pause on new data center incentives took effect”
    News report · Oct. 2026 · grade C
  • Jobs contractual minimum: 25 FTE jobs
    “C1 Sangamon committed to at least $500 million in investment and 25 new full-time-equivalent jobs, including eligible tenant employment, over the specified performance period”
    News report · Oct. 2026 · grade C
  • Land control: Contract purchaser only: C1 Sangamon I LLC petitioned as contract purchaser; land still owned by Dowson Farms; no sale recorded in county property records as of Oct 2026
    “county property records show none of that land has been sold yet, more than six months since the County Board approved the deal”
    News report · Oct. 2026 · grade C
  • State tax incentive MOU (DCEO Data Center Investment Program): scope 500000000 USD minimum investment
    “C1 Sangamon committed to at least $500 million in investment and 25 new full-time-equivalent jobs, including eligible tenant employment, over the specified performance period”
    News report · Oct. 2026 · grade C
  • State tax incentive MOU (DCEO Data Center Investment Program): jobs 25 FTE jobs minimum
    “The 25-job figure is a contractual minimum; the higher figures are expectations that require subsequent performance evidence”
    News report · Oct. 2026 · grade C
  • State tax incentive MOU (DCEO Data Center Investment Program): wage 120 % of county average annual wage (about $83,000)
    “MOU jobs must be paid at least 120% of the county average annual wage; benefit is 20-year sales-tax exemptions on equipment and building materials”
    News report · Oct. 2026 · grade C
  • Land purchase LOI / option: scope 280 acres
    “In August 2024, Diamond Core Datacenter and members of Dowson Farms signed a letter of intent for the data center LLC to purchase the very same land CyrusOne petitioned to purchase”
    News report · Oct. 2026 · grade C
  • Land purchase LOI / option: term 5 years
    “The five-year contract does not expire until August 2029; it is unclear if CyrusOne has taken over the option to purchase agreement”
    News report · Oct. 2026 · grade C
  • Land purchase (C1 Sangamon I LLC as contract purchaser): status
    “FINDING: county property records show none of the land has been sold yet, more than six months after the County Board approved the deal (Oct 2026)”
    News report · Oct. 2026 · grade C
  • Electric will-serve letter (RECC, Aug 26, 2025): scope gap
    “The RECC will-serve electricity letter, dated Aug. 26, 2025, makes no mention of CyrusOne but says the co-op will provide electricity to a different, substantially smaller project called the Diamond Core Data Center”
    News report · Oct. 2026 · grade C
  • Water will-serve letter (Apple Creek, Jan 29, 2026): condition
    “The Jan. 29 Apple Creek Water Cooperative letter included in the petition states the water utility is still reviewing CyrusOne's application”
    News report · Oct. 2026 · grade C
  • Project labor agreement: scope 500 construction jobs
    “Project labor agreement committed for construction; company projects 500+ construction jobs”
    News report · Oct. 2026 · grade C
  • Road use / development agreement (county): finding
    “FINDING: no separate county road-use or development agreement for this campus was located in the county record or contracts postings; road approvals run through the zoning file (Highway Dept Exhibit F and Ch. 17.39.040(E))”
    Local government · Oct. 2026 · grade C
  • Projected tax distribution is geographically lopsided: about $71M of the $98M/20-yr projection goes to three Macoupin County taxing bodies (site is in the Waverly school district area); Sangamon County government itself
    “about $71 million of projected property tax revenue would go to three taxing bodies based in Macoupin County, with six Sangamon-based taxing districts expected to split roughly $27 million”
    News report · Oct. 2026 · grade C
  • Site acres: 280 acres
    “Sangamon County Board members voted on Tuesday to allow the construction of a $500m, 280-acre, four-building data center at the 13000 Block of Thayer Road, Waverly”
    News report · Oct. 2026 · grade C
  • Site address: 13000 Block of Thayer Road, Waverly, IL (Talkington Township, Sangamon County); 280-acre campus, four buildings
    “Sangamon County Board members voted on Tuesday to allow the construction of a $500m, 280-acre, four-building data center at the 13000 Block of Thayer Road, Waverly.”
    News report · April 2026 · grade C
Permits and government (41)
  • Applicant entity: C1 Sangamon I LLC
    “Petitioner C1 Sangamon I LLC; Zoning Case 2025-019; 13000 Block of Thayer Road, Waverly”
    Local government · Oct. 2026 · grade A
  • Acres: 280 acres
    “280 acres; existing zoning A Agricultural; existing use cropland”
    Local government · Oct. 2026 · grade A
  • Zoning: A Agricultural (cropland); conditional permitted use for a data center granted under Ch. 17.58 and Ch. 17.39
    “CPU for a Data Center under Ch. 17.58 and Section 17.39.020; staff recommends approval with conditions”
    Local government · Oct. 2026 · grade A
  • Zoning case: 2025-019
    “Zoning Case #2025-019, petitioner C1 Sangamon I LLC”
    Local government · Oct. 2026 · grade A
  • Stage: entitled (conditional use granted Apr 7, 2026) - pre-construction; approval under legal challenge; construction gated by conditions precedent
    “The resolution was adopted and the zoning was granted (YEAS 17, NAYS 10, Thomas abstaining)”
    Local government · Oct. 2026 · grade A
  • Conditions of approval: 4 conditions precedent to a building permit: (1) Highway Dept final approval (Ex. F); (2) Public Health final approval (Ex. H); (3) updated RECC will-serve letter covering the ENTIRE project; (4)
    “updated RECC will-serve letter indicating availability to serve the ENTIRE project; definitive Apple Creek Water Cooperative will-serve letter”
    Local government · Oct. 2026 · grade A
  • Sunset expiry finding: No sunset/expiry/lapse clause found in Ch. 17.39 as reproduced in the county's Mar 17, 2026 Exhibit A, nor in the staff recommendation; the adopted resolution's own text is a scanned PDF that yield
    “Chapter 17.39 sections 17.39.010-17.39.050 contain no lapse or expiry provision for a granted conditional permitted use”
    Local government · Oct. 2026 · grade A
  • Moratorium legal advice: County legal counsel advised the board it has NO authority under Illinois law to adopt zoning moratoria
    “Legal counsel advised the county it has no authority to adopt zoning moratoria”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use: application filed
    “Zoning Case #2025-019; petitioner C1 Sangamon I LLC; site inspected 10/29/2025”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use: tabled
    “Resolution 2 (tabled 3/23/26) taken off the table 23-5 on April 7, 2026”
    Local government · Oct. 2026 · grade A
  • Conditional permitted use: GRANTED with conditions
    “The resolution was adopted and the zoning was granted”
    Local government · Oct. 2026 · grade A
  • Zoning text amendment (data centers chapter): adopted
    “On July 8, 2025, the text amendment (Res 4-1) was presented at the County Board and passed with a unanimous vote”
    Local government · Oct. 2026 · grade A
  • EcoCAT environmental screening: completed - no listed/endangered species found
    “IDNR EcoCAT screening found no listed or endangered species”
    Local government · Oct. 2026 · grade A
  • County Board adopts Ch. 17.39 Data Centers (text amendment 2025-009, Res 4-1, unanimous) - data centers become a conditional use in the A district
    “On July 8, 2025, the text amendment (Res 4-1) was presented at the County Board and passed with a unanimous vote”
    Local government · Oct. 2026 · grade A
  • County Board grants the conditional permitted use 17-10-1, with pre-building-permit conditions (utility will-serve letters, highway, public health)
    “The resolution was adopted and the zoning was granted”
    Local government · Oct. 2026 · grade A
  • Sangamon County Board: Resolution 2 - C1 Sangamon conditional permitted use
    “Resolution 2 was tabled at the March 23, 2026 meeting (per the adopted April 7 minutes)”
    Local government · Oct. 2026 · grade A
  • Sangamon County Board: Resolution 2 - granting a conditional permitted use with conditions, C1 Sangamon I LLC (Case 2025-019)
    “YEAS 17, NAYS 10, Thomas abstaining; the resolution was adopted and the zoning was granted”
    Local government · Oct. 2026 · grade A
  • Iepa permit status: No Illinois EPA air permit or public notice found for the Sangamon/Waverly campus as of Oct. 18, 2026; the only CyrusOne item in IEPA Bureau of Air notices is the Aurora campus CAAPP (2905 E. Diehl Road,
    “Illinois EPA Bureau of Air public notices carry a CyrusOne LLC CAAPP notice for 2905 E; Diehl Road, Aurora (91 diesel fired emergency generators)”
    State agency · Oct. 2026 · grade B
  • Aliases: C1 Sangamon; Diamond Core Data Center (original smaller predecessor proposal on the same site)
    “Merged Staff Report prepared for the April 7, 2026 County Board meeting on the C1 Sangamon petition”
    Local government · Oct. 2026 · grade B
  • Site originator: Swift Current Energy / Diamond Core Datacenter LLC (introduced CyrusOne to county zoning staff Feb-Mar 2025)
    “County project record: site originated by Swift Current Energy and its Diamond Core Datacenter LLC before the CyrusOne petition”
    Local government · Oct. 2026 · grade B
  • County code: 17167
    “Sangamon County staff report, Zoning Case 2025-019 (Sangamon County FIPS 17167)”
    Local government · Oct. 2026 · grade B
  • Construction stage: not stated
    “the county is currently working with CyrusOne on permitting for the data center; the hiring process for construction jobs will only begin after a building permit has been issued”
    News report · Oct. 2026 · grade C
  • Conditional permitted use: recommendation to approve (5-0)
    “Zoning Board of Appeals voted 5-0 to recommend approval on Feb. 19, 2026”
    News report · Oct. 2026 · grade C
  • Zoning text amendment (tightening): proposed; tabled in committee, NOT adopted
    “A proposal to amend the county's data center ordinance remained tabled following the county's May 21 Zoning and Land Use Committee meeting”
    News report · Oct. 2026 · grade C
  • Building permit: NOT ISSUED
    “the county is currently working with CyrusOne on permitting for the data center”
    News report · Oct. 2026 · grade C
  • Air construction permit (diesel backup generators): NO PERMIT FOUND
    “Negative result; positive control: IEPA construction permit 24090003 (Prime Data Centers, Cook County, 39 diesel emergency generators) retrieved from epa.illinois.gov”
    State agency · Oct. 2026 · grade C
  • State incentive certification: MOU executed (pre-pause)
    “CyrusOne secured the Sangamon County tax break before the state pause on new data center incentive certifications took effect”
    News report · Oct. 2026 · grade C
  • Court challenge to approval: declaratory judgment filed
    “The July 6 lawsuit was filed by residents seeking to overturn the county's approval due to procedural and environmental concerns”
    News report · Oct. 2026 · grade C
  • Swift Current Energy introduces CyrusOne to Sangamon County zoning staff (Feb-Mar 2025, per FOIA-released emails); site planning material enters the county process
    “records show Swift Current arranging CyrusOne's introduction to Sangamon County zoning personnel”
    News report · Oct. 2026 · grade C
  • County Board tables the approval resolution 15-13 before 700+ attendees
    “the Sangamon County Board voted on March 23, 2026, to table the zoning proposal; the vote was 15-13 in favor of tabling”
    News report · Oct. 2026 · grade C
  • Neighboring residents file declaratory-judgment suit (5 counts) against the county, the board, and C1 Sangamon I LLC within the 90-day judicial-review window
    “The July 6 lawsuit was originally filed against Sangamon County and the County Board by residents who live approximately a mile or less from the site”
    News report · Oct. 2026 · grade C
  • Motion-to-dismiss hearing held; decision pending (Judge Giganti)
    “Lawyers hired by the county argued the complaint should be dismissed with prejudice”
    News report · Oct. 2026 · grade C
  • Scheduled hearing postponed (attorney ill); no new date; lawsuit unresolved. County property records still show no land sale
    “The next court hearing, originally scheduled for Oct. 9, was postponed; a new date has not yet been scheduled”
    News report · Oct. 2026 · grade C
  • Execution-risk stack at this pass: land not purchased, RECC will-serve for the actual project not in the record, building permit not issued, lawsuit pending, MISO phase-2 study status unpublished since Nov 2025 - 'constr
    “county property records show none of that land has been sold yet, more than six months since the County Board approved the deal”
    News report · Oct. 2026 · grade C
  • Sangamon County Zoning Board of Appeals: C1 Sangamon CPU petition (Zoning Case 2025-019), amended application
    “Zoning Board of Appeals voted 5-0 to recommend approval on Feb. 19, 2026”
    News report · Oct. 2026 · grade C
  • Sangamon County Board Zoning and Land Use Committee: Proposed 180-day data-center moratorium
    “The County Board zoning committee voted down a proposed data-center moratorium on Feb. 19, 2026”
    News report · Oct. 2026 · grade C
  • Sangamon County Circuit Court (Judge Adam Giganti): Hearing on county motion to dismiss the residents' declaratory-judgment suit
    “Lawyers hired by the county argued the complaint should be dismissed with prejudice”
    News report · Oct. 2026 · grade C
  • Sangamon County Circuit Court: Hearing on motion to dismiss
    “The next court hearing, originally scheduled for Oct. 9, was postponed due to one of the attorneys being ill; a new date has not yet been scheduled”
    News report · Oct. 2026 · grade C
  • Generator claim: 420 backup diesel generators are attributed to the project in lawsuit coverage; the County Board's own court filing makes no mention of the generators, and no Illinois EPA document states a fleet - press
    “The filing, which makes no mention of the project's planned 420 backup diesel generators, also cites a 2024 decision from the state's Fourth District Appellate Court”
    News report · Sept. 2026 · grade C
  • Construction stage: none - Sangamon County Board approved the conditional permitted use on Apr 7, 2026 (vote 17-10 with one abstention); additional permits are still required before construction and no groundbreaking had
    “In April, the Sangamon County Board approved a conditional permitted use to allow zoning for CyrusOne to construct a data center on 280 acres of agriculturally zoned land”
    News report · April 2026 · grade C
  • County approval: Sangamon County Board approved the conditional permitted use on April 7, 2026 (vote 17-10 with one abstention); approval is being challenged in a pending lawsuit; no construction (construction was target
    “CyrusOne has got the go-ahead to build a data center in Sangamon, Illinois.”
    News report · April 2026 · grade C
Legal (1)
  • Lawsuits: Declaratory judgment, Sangamon County Circuit Court (7th Judicial Circuit), filed Jul 6, 2026 by neighboring residents (Caruthers family et al.) v. Sangamon County, the County Board, and C1 Sangamon I LLC; 5 co
    “The July 6 lawsuit was originally filed against Sangamon County and the County Board by residents who live approximately a mile or less from the site”
    News report · Oct. 2026 · grade C
Site and other (23)
  • Address: 13000 Block of Thayer Road, Waverly (NW corner of Thayer and Clark roads), Talkington Township
    “13000 Block of Thayer Road, Waverly; PINs 33-29-200-001, 33-29-100-002, 33-20-400-002, 33-20-300-003”
    Local government · Oct. 2026 · grade A
  • Parcel IDs: 33-29-200-001; 33-29-100-002; 33-20-400-002; 33-20-300-003
    “PINs 33-29-200-001, 33-29-100-002, 33-20-400-002, 33-20-300-003”
    Local government · Oct. 2026 · grade A
  • Buildings: 4
    “Campus of 4 buildings of approximately 450,000 sq ft each, about 1.8M sq ft on 280 acres”
    Local government · Oct. 2026 · grade A
  • Water supplier: Apple Creek Water Cooperative (source: Waverly Lake; co-op to build a backup connection to the Otter Lake water system)
    “Apple Creek Water Cooperative is the water utility; source is Waverly Lake; backup connection to the Otter Lake system planned”
    Local government · Oct. 2026 · grade A
  • Water use stated: 1100 gallons/day per building
    “Water use approximately 1,100 gallons per day per building, comparable to an office building (restrooms and humidification)”
    Local government · Oct. 2026 · grade A
  • Noise standard: 50 dB at the property line when adjacent to an existing residence or residential district; noise study before and after each construction phase at developer expense
    “Noise levels measured at the property line shall not exceed fifty (50) decibels when located adjacent to an existing residence or residential district”
    Local government · Oct. 2026 · grade A
  • Name: CyrusOne Sangamon Campus
    “proposed CyrusOne data center project page, Sangamon County”
    Local government · Oct. 2026 · grade B
  • Developer: CyrusOne
    “CyrusOne is a leading global data center owner, developer and operator with over 60 data centers across the United States, Europe, and Japan”
    Company · Oct. 2026 · grade B
  • Jobs permanent stated: 100 jobs
    “More than 100 permanent, full-time jobs supporting technical operations, facility management, and other critical roles once the campus is operational”
    Company · Oct. 2026 · grade B
  • Jobs construction stated: 500 jobs
    “More than 500 construction jobs during the multi-year development of the campus”
    Company · Oct. 2026 · grade B
  • Announced: Oct. 2025
    “County FAQ published Nov 10, 2025 for the application filed October 2025”
    Local government · Oct. 2026 · grade B
  • Original target date: not stated
    “No completion/COD date published in the county record or by the developer”
    Local government · Oct. 2026 · grade B
  • Developer owners: KKR and Global Infrastructure Partners (joint owners of CyrusOne)
    “CyrusOne, which is jointly owned by private equity firms KKR and Global Infrastructure Partners”
    News report · Oct. 2026 · grade C
  • Land control date: Aug. 2024
    “In August 2024, Diamond Core Datacenter and members of Dowson Farms signed a letter of intent for the data center LLC to purchase the very same land”
    News report · Oct. 2026 · grade C
  • Construction start stated: 2027
    “If approved, construction could begin as early as 2027”
    News report · Oct. 2026 · grade C
  • Current target date: not stated
    “Soonest completion about four years out per the company as reported June 2026; no formal COD published”
    News report · Oct. 2026 · grade C
  • Opposition: Coalition for Springfield's Utility Future and neighboring residents; sustained opposition Nov 2025-Oct 2026; 180-day moratorium pushed and defeated in committee Feb 19, 2026
    “The coalition held a public meeting on the issue Oct. 29 that attracted 120 people”
    News report · Oct. 2026 · grade C
  • Diamond Core Datacenter LLC signs land-purchase LOI with Dowson Farms members for the 280-acre site (5-year term, expires Aug 2029)
    “In August 2024, Diamond Core Datacenter and members of Dowson Farms signed a letter of intent”
    News report · Oct. 2026 · grade C
  • Diamond Core Datacenter LLC incorporated in Illinois; IL SoS lists Swift Current Energy top personnel as managers
    “Diamond Core Datacenter LLC, which was incorporated in September 2024”
    News report · Oct. 2026 · grade C
  • RECC will-serve letter issued - names the Diamond Core Data Center at a materially lower load; never updated for CyrusOne in the petition record
    “The Rural Electric Convenience Cooperative will-serve electricity letter, dated Aug. 26, 2025, makes no mention of CyrusOne”
    News report · Oct. 2026 · grade C
  • Apple Creek Water Cooperative letter in the petition record states it is still reviewing the CyrusOne application
    “The Jan. 29 Apple Creek Water Cooperative letter included in the petition states the water utility is still reviewing CyrusOne's application”
    News report · Oct. 2026 · grade C
  • Governor/DCEO administrative pause on NEW data-center incentive certifications begins; the C1 Sangamon MOU predates the pause and survives
    “CyrusOne said the Sangamon County site had secured a tax break before the pause took effect”
    News report · Oct. 2026 · grade C
  • Announced: Oct. 17, 2025
    “the proposed Sangamon County project “would be one of our larger campus developments,” CyrusOne said Oct. 17 in written responses to questions from Illinois Times”
    News report · Oct. 2025 · grade C

Imagery and records: Satellite imagery: Maxar via Esri World Imagery Wayback.