Sixth Street
BrownfieldCedar Rapids, Linn, Iowa · Interstate Power and Light Co
Sixth Street is a coal plant in Cedar Rapids, Linn, Iowa, retired 2010-11-01. Retired generation sites are among the most attractive datacenter redevelopment targets: the existing interconnection was sized for roughly 85 MW of generation, so the grid hookup, transmission rights, and often cooling-water access are already in place — collapsing the speed-to-power timeline versus a greenfield build.
Former use & capacity
Grid hookup & remediation
Site conditions & market — Linn County
County-level intelligence for this site's location — the power economics, water, hazard, connectivity, and workforce a developer screens before ever visiting. Assembled from FEMA NRI, BLS QCEW, FCC BDC, USGS water-use, and EIA.
Market & workforce
Power economics & interconnection
Water & cooling
Hazard, flood & connectivity
County-level context — address-level utility offerings and flood zoning vary within the county. Confirm site-specific service with the utility and a Phase I ESA.
Nearby brownfield & retired-generation sites
A proximity screen of other retired-plant, contaminated, and EPA-flagged sites near Sixth Street — the environmental neighborhood, ranked by legacy grid capacity.
| Site | Former use | Legacy MW | Distance | Cleanup status |
|---|---|---|---|---|
| Prairie Creek | coal plant | 23 | 3.2 mi | — |
| Red Cedar | natural gas plant | 23 | 1.1 mi | — |
| University of Iowa Main Power Plant | natural gas plant | 6 | 23.6 mi | — |
| Alliant SBD 8601 Quad Graphics | oil plant | 4 | 24.0 mi | — |
| Alliant SBD 8501 Aegon LI | oil plant | 3 | 3.3 mi | — |
| Alliant SBD 9403 Aegon DC | oil plant | 2 | 4.8 mi | — |
| Alliant SBD 9302 Aegon NP | oil plant | 1 | 3.4 mi | — |
| Alliant SBD 9801 Aegon Martha's Way | oil plant | 1 | 4.4 mi | — |
Derived from GridCensus's retired-generator & EPA brownfield dataset. Not a substitute for an ASTM E1527 Phase I environmental radius report.
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Nearby datacenter candidate sites
Scored candidate sites near Sixth Street, ranked by DC Readiness.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| TIFFIN | Substation-Adjacent | IA | Johnson County | 345 kV | 600 MW | 2.8 yrs | 67.5 |
| Alliant SBD 9302 Aegon NP | Brownfield | IA | Linn | — | 1 MW | 2.8 yrs | 66.8 |
| EC Near University of Iowa Main Power Plant | Greenfield | IA | Johnson | — | — | 1.4 yrs | 66.5 |
| ARNOLD | Substation-Adjacent | IA | Linn County | 345 kV | 600 MW | 2.8 yrs | 66.4 |
| EC Coal Linn County | Greenfield | IA | Linn County | — | — | 1.4 yrs | 64.2 |
| EC Near Red Cedar | Greenfield | IA | Linn | — | — | 1.4 yrs | 64.1 |
| EC Near University of Iowa Main Power Plant | Greenfield | IA | Johnson | — | — | 1.4 yrs | 63.4 |
| EC Coal Linn County | Greenfield | IA | Linn County | — | — | 1.4 yrs | 63.1 |
Nearby internet exchanges
- ark data centers - Cedar Rapids ,IAMarion, IA · 4 networks
- Enseva Cedar RapidsHiawatha, IA · 3 networks
- SFN IA-UrbanaUrbana, IA · 1 networks
- USSHCMonticello, IA · 1 networks
See all datacenter sites in Iowa →
Dataset updated . Screening estimates derived from public data sources.
Brownfield attributes are derived from EIA retired-generator and EPA public data. Existing capacity reflects the retired plant's historical nameplate, not deliverable interconnection for a new load. Confirm reusable interconnection rights, remediation status, and site availability with the utility, ISO, and current owner.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for Sixth Street, Cedar Rapids, Linn, Iowa. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.