Utility Tariff Analysis · Updated September 2026

Alliant Energy's Rider Individual Customer Rate (ICR): What It Means for AI Data Center Siting in Iowa

September 18, 2026 6 min read Strategic Crypto Reserve Data Center Infrastructure

Named large customers under individually negotiated service agreements are served under Alliant subsidiary Interstate Power and Light's Rider ICR framework, under which the utility files and receives approval for individual customer service agreements — already used for both a large data-center customer and, separately, QTS.

Iowa at a glance: industrial power about 7.5¢/kWh (EIA-based, indexed to April 2026) · grid queue about 26 months · data center equipment tax exemption: available. Indicative figures from the SCR AI Build Configurator v1.4.0.

The Tariff Explained Model a Iowa Build Free
Iowa AI data center power map: Alliant Energy's Rider Individual Customer Rate (ICR) large-load tariff

Alliant Energy's Rider Individual Customer Rate (ICR)

IA

Interstate Power and Light (Alliant Energy)

TF-2025-0007

Regulatory docket / filing reference

Named large customers under individually negotiated service agreements

Who the tariff applies to

Named large customers under individually negotiated service agreements are served under Alliant subsidiary Interstate Power and Light's Rider ICR framework, under which the utility files and receives approval for individual customer service agreements — already used for both a large data-center customer and, separately, QTS.

Also active in Iowa: Alliant has paired its large-load growth with a five-year base electric rate freeze in Iowa and is serving a $576 million Google project in Cedar Rapids (part of a $7 billion statewide Google investment) alongside a $10 billion QTS campus in the same city.

Iowa at a glance: large-load tariff threshold, docket and who it applies to

Named Projects Already Underway

CustomerLocationDetails
GoogleCedar Rapids, IA$576 million data center project, part of a $7 billion statewide Google investment; Alliant has implemented a 5-year base rate freeze supported by the growth
QTS Data CentersCedar Rapids, IA$10 billion data center campus

Figures compiled from the Edison Electric Institute's "Large Load Projects and Tariffs" (September 2026) member-company summary and public regulatory filings. Confirm current tariff terms directly with Interstate Power and Light (Alliant Energy) and the relevant state public utility commission before relying on any figure for a capital decision.

Weighing Iowa against another state or a Canadian province with a different rate and interconnection picture entirely? Run both sides of the comparison through our licensed AI data center cost configurator — it applies each jurisdiction's actual power rate, tax treatment and large-load tariff rules to the same seven build configurations.

Named data center projects underway in Iowa Named Projects Already Underway: Alliant Energy's Rider Individual Customer Rate (ICR): What It Means for AI Data Center Siting in Iowa

Model This State on Your Own Site

Every figure above comes from the same power-cost and tariff dataset behind the SCR AI Build Configurator — a licensed, embeddable widget that models seven data center build configurations against all nine Canadian provinces and all 50 US states plus DC, returning capital expenditure by line item, energy cost, revenue by commercial structure, EBITDA and payback.

LicencePrice (CAD)Who it suits
Standard$4,000 / domain / yearAdvisors who need three lease-model configurations and a clipboard summary
Pro$10,000 / domain / yearConsultants who send CSV deliverables to clients and want all seven configurations
EnterpriseFrom $25,000 / year, up to 3 domainsDevelopers and EPC firms who want the model on their own cost basis with attribution removed

Not ready for an annual licence? A one-time Site Screening Report ($950, one site) runs the same model for a single build without embedding anything.

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Model a Iowa data center build in the SCR AI Build Configurator: CapEx, power cost, EBITDA and payback Model This State on Your Own Site: Alliant Energy's Rider Individual Customer Rate (ICR): What It Means for AI Data Center Siting in Iowa

Compare Iowa With Nearby States

Large-load rules change sharply at state lines. See how the neighbouring utilities handle data center and high-density loads before you shortlist a site.

Minnesota

Xcel 100 MW / Otter Tail
Illinois

ComEd Rider DE
Missouri

Evergy Missouri LLPS (75 MW)
Nebraska

Nebraska 20 MW Large Load Act
All 50 State Tariffs Data Center Cost Calculator AI Build Configurations

Frequently Asked Questions

What is Alliant Energy's Rider Individual Customer Rate (ICR)?

Named large customers under individually negotiated service agreements are served under Alliant subsidiary Interstate Power and Light's Rider ICR framework, under which the utility files and receives approval for individual customer service agreements — already used for both a large data-center customer and, separately, QTS.

Why did Interstate Power and Light (Alliant Energy) introduce this large-load structure?

To ensure the cost of new generation, transmission and distribution infrastructure built to serve very large customers, chiefly hyperscale data centers, is paid for by those customers rather than spread across the general rate base of residential and small commercial ratepayers.

What large data center projects are already active in Iowa?

Alliant has paired its large-load growth with a five-year base electric rate freeze in Iowa and is serving a $576 million Google project in Cedar Rapids (part of a $7 billion statewide Google investment) alongside a $10 billion QTS campus in the same city.

Does this tariff replace Iowa's standard commercial and industrial rates?

No. Alliant Energy's Rider Individual Customer Rate (ICR) sits above Interstate Power and Light (Alliant Energy)'s standard commercial and industrial rate schedules and applies specifically to customers that meet or exceed the large-load threshold described above. Smaller commercial and industrial loads continue to be billed under existing rate schedules.

How can I model a Iowa data center build against this tariff and other states?

The SCR AI Build Configurator applies Iowa's power cost, tax treatment and large-load tariff rules alongside all other US states and Canadian provinces, so a Iowa scenario can be compared line-by-line against any alternative site.