Nisource Inc. revenue by segment NI

Nisource Inc. splits its revenue into 4 lines in its filings. The largest line in Q3 of fiscal 2026, the quarter ended Sep 30, 2026 was NIPSCO Operations at $795.7 million, 61% of the total.

USD in millions. The percent under a figure is the change from the same quarter a year earlier.

Line
TTM
Sep 30, 2026
Q3 FY2026
Sep 30, 2026
Q2 FY2026
Jun 30, 2026
Q1 FY2026
Mar 31, 2026
Q4 FY2025
Dec 31, 2025
Q3 FY2025
Sep 30, 2025
Q2 FY2025
Jun 30, 2025
Q1 FY2025
Mar 31, 2025
Q4 FY2024
Dec 31, 2024
Revenue
6,798
1,299
1,290
2,322
6,523
1,240
1,246
2,150
5,283
NIPSCO Operations
—
796
+4.6%
share 61.3%
705
+7.7%
share 54.6%
994
+9.2%
share 42.8%
874
+22.0%
share 13.4%
760
share 61.3%
654
share 52.5%
910
share 42.3%
716
share 13.6%
Columbia Operations
—
493
+2.8%
share 37.9%
585
-1.3%
share 45.4%
1,329
+7.2%
share 57.2%
1,013
+23.0%
share 15.5%
480
share 38.7%
592
share 47.5%
1,240
share 57.7%
824
share 15.6%
Corporate
—
10
share 0.8%
—
—
—
—
—
—
—
NIPSCO
—
2
share 0.1%
—
—
—
—
—
—
—
How these figures are calculated

Quarterly columns are single-quarter amounts. When a 10-Q reports only a year-to-date total, as cash flow statements do, the quarter is that total minus the previous quarter's year-to-date total. The fourth quarter is the annual report's full year minus the first nine months. A column marked YTD is a year-to-date total, shown when the earlier report needed for the single quarter is missing. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.

Company profile

Industry
Electric & Other Services Combined (SIC 4931)
Listed as
NI (NYSE)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Merrillville, IN
SEC filer status
Large accelerated filer
SEC CIK
1111711
Former names
NISOURCE INC/DE (until Jun 26, 2019); NEW NISOURCE INC (until Nov 2, 2000)

Other Electric & Other Services Combined companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.