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IPL Infrastructure Plan

Indianapolis Power & Light Co. (IPL) is seeking IURC approval of a seven-year, $1.2 billion infrastructure plan. Under state law, the IURC must issue a final order on the plan by February 19, 2020. The OUCC is using its legal and technical resources to review the plan and is scheduled to file testimony on October 7, 2019.

If the plan is approved, then IPL will be allowed to seek incremental rate increases during the plan's life, as described below. 

IPL customers may comment for the case record by sending written comments to the OUCC through October 1, 2019.

The IURC held public field hearings in early September. The OUCC's August 19, 2019 news release offers additional information.

For more information on providing comments, please see the OUCC's guide to speaking out on pending cases.

A brief summary of the TDSIC law

Indiana Code 8-1-39 allows electric and natural gas utilities to submit infrastructure improvement plans for IURC approval. A plan may cover a 5- to 7-year range. The IURC must rule within 210 days once such a request is filed.

  • Once a plan receives IURC approval, the utility may request incremental rate increases every 6 months to pay for the projects. The rate adjustment is referred to as the Transmission, Distribution and Storage System Improvement Charge (TDSIC). OUCC testimony is due within 60 days of the utility's filing. The IURC has 120 days to rule on such a request.
  • Annual TDSIC rate increases are limited to no more than 2 percent of a utility's total retail revenues.
  • The TDSIC rate mechanism (or tracker) allows the utility to recover 80 percent of the costs as they are incurred. The remaining costs are deferred until the utility's next base rate case, which must be filed before the end of the plan's lifespan.
Pending TDSIC Case

IPL's case-in-chief, filed on July 24, 2019, includes the following:

All publicly filed documents are available online in the IURC case file. The cause number is 45264.

This page will be updated based on case developments.