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Compare large-load tariffs side by side

Pick up to three utilities. See status, the contract term, the minimum bill, collateral and exit fee each filing states, with the source. Add a size and a demand charge to see what the minimum costs in dollars.

Comparison

Interstate Power and Light (Alliant Energy Iowa), Rider ICR Individual Customer Rate
StatusApproved
Applies at25 MW or more (25,000 kW) at a single metering point, served at 69 kV or above, with an expected 80% load factor and 175,000 MWh a year, or demonstrated ability to curtail to a firm demand level
Last reviewed2026-10-14
Contract termMinimum term of 5 years; a longer term can be required (Rider ICR)
RampNot stated in the filings we read
Take-or-pay (minimum bill)Not stated in the filings we read
CollateralNot stated in the filings we read
Exit feeNot stated in the filings we read
Notice to reduce or endNot stated in the filings we read
Time to powerNot stated in the filings we read
SourceIPL Rider ICR tariff sheets 80-82 (Alliant Energy, read in full); EEI Large Load Projects and Tariffs, Sept 2026, for the agreement docket numbers (not independently opened).

Shaded rows differ between the utilities. Faded values are not stated in the filings we read.

Screening information from public filings, not legal or investment advice. The utility's signed agreement controls. See all coverage · Commitment estimator · Check a site