LNT · 10-Q · 2026Q3 · Full report

Large Load Tariff

ALLIANT ENERGY CORP · 2026-10-30 · Importance 46 · Surprise 42

In June 2026, the PSCW directed WPL to file a tariff for customers with demand requirements of at least 100 MW, and WPL filed its application in September 2026. The proposal would require a 15-year initial service term, minimum demand commitments, termination charges, customer reimbursement obligations, and credit support. It is intended to ensure large-load customers pay the generation, distribution, transmission, operating, and other costs associated with serving them rather than shifting those costs to other customers. A PSCW decision is expected in the first half of 2027.

Key facts

• In September 2026, WPL applied for a large load tariff covering customers with demand requirements of 100 MW or greater; the proposed tariff requires a 15-year initial service term and a PSCW decision is expected in the first half of 2027.
• WPL’s proposed large load tariff requires qualifying customers to commit to an initial service term of 15 years and includes minimum demand commitments, termination charges, customer reimbursement obligations and credit support requirements.