Interstate Power and Light Co - 5.10% PRF PERPETUAL USD 25 - Ser D Operating Income

The latest operating income for IPLDP is $1B as of March 2026. That compares with $950M in the prior-year period — up 7.6% year over year. Investors often review this figure alongside Interstate Power and Light Co - 5.10% PRF PERPETUAL USD 25 - Ser D's historical trend and sector peers before judging valuation or financial health.

Over the past year, IPLDP's operating income moved from $950M to $1B — a 7.6% year-over-year increase. If the trend continues in the same direction for several quarters, it can signal a meaningful shift in Interstate Power and Light Co - 5.10% PRF PERPETUAL USD 25 - Ser D's operating scale or balance-sheet position.

A operating income figure of $1B for IPLDP is a snapshot of scale on that line item. On its own it does not say whether the business is healthy — you also want growth rate, margins, and how the number compares with similar companies. Explore the charts below for those layers of context.

After noting IPLDP's operating income ($1B), review year-over-year change from $950M, peer averages, and a few neighboring metrics such as revenue, margins, or valuation multiples. That combination usually beats staring at a single figure. The navigation links on this page jump you to those related views.

This page's peer comparison chart is the fastest way to stack Interstate Power and Light Co - 5.10% PRF PERPETUAL USD 25 - Ser D's operating income against similar Utilities names. You can also browse sector and industry screens on Stockcircle for a broader set of Utilities companies and their key multiples and fundamentals.