Alliant Energy

Commercial rate guide for Alliant — Central and southern Iowa (as Interstate Power and Light) and southern and central Wisconsin (as Wisconsin Power and Light), serving approximately 975,000 electric and 420,000 gas customers

IAWI

Rate Overview

per kWh

Electric & Gas

Not Available

Rate Structure

General service rate with demand charges for commercial customers over 20 kW. Large general service rates for accounts above 200 kW with time-of-use options. Gas rates include customer charge plus volumetric rate with monthly gas cost adjustment.

Recent Rate Changes

Rising

5.7% electric increase in Iowa effective January 2026; 4.2% increase in Wisconsi

5.7% electric increase in Iowa effective January 2026; 4.2% increase in Wisconsin effective January 2026

Common Billing Issues

Property managers with Alliant accounts frequently encounter these billing challenges:

Different rate structures between Iowa and Wisconsin service territories

Gas cost adjustment clauses creating winter bill spikes

Renewable energy rider charges added to commercial accounts

Power factor penalties on large commercial accounts

Deregulation & Supply Choice

Regulated Market

The utility is the sole provider in this service territory.

✗No competitive supply choice

Both Iowa and Wisconsin are regulated states. Alliant Energy operates as a vertically integrated utility providing generation, transmission, and distribution in both states.