Utility Tariff Analysis · Updated September 2026

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

September 18, 2026 6 min read Strategic Crypto Reserve Data Centre 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-centre customer and, separately, QTS.

The Tariff Explained Model a IA Build
Alliant Energy's Rider Individual Customer Rate (ICR) — AI data centre infrastructure

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-centre 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.

Named Projects Already Underway

CustomerLocationDetails
GoogleCedar Rapids, IA$576 million data centre 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 centre 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 centre cost configurator — it applies each jurisdiction's actual power rate, tax treatment and large-load tariff rules to the same seven build configurations.

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 centre 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
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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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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-centre 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 centres, is paid for by those customers rather than spread across the general rate base of residential and small commercial ratepayers.

What large data centre 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 centre 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.