Nisource Inc. splits its revenue 2 ways in its filings. By operating segments, the largest line in fiscal 2025, which ended Dec 31, 2025 was Columbia Operations at $3.3 billion, 51% of the total. By sales mix, the largest line in fiscal 2025, which ended Dec 31, 2025 was Columbia Operations at $3.3 billion, 51% of the total.
USD in millions. The percent under a figure is the change from the year before.
| Line |
FY 2026
Sep 30, 2026
|
FY 2025
Dec 31, 2025
|
FY 2024
Dec 31, 2024
|
FY 2023
Dec 31, 2023
|
FY 2022
Dec 31, 2022
|
FY 2021
Dec 31, 2021
|
FY 2020
Dec 31, 2020
|
FY 2019
Dec 31, 2019
|
FY 2018
Dec 31, 2018
|
FY 2017
Dec 31, 2017
|
FY 2016
Dec 31, 2016
|
|---|---|---|---|---|---|---|---|---|---|---|---|
| Revenue |
6,798
|
6,523
|
5,283
|
5,348
|
5,739
|
4,731
|
4,473
|
5,053
|
4,991
|
4,875
|
4,492
|
| Operating segments | |||||||||||
| Columbia Operations |
—
|
3,325
+26.5%
share 51.0%
|
2,628
-1.2%
share 49.8%
|
2,661
-9.7%
share 49.8%
|
2,948
share 51.4%
|
—
|
—
|
—
|
—
|
—
|
—
|
| NIPSCO Operations |
—
|
3,198
+20.5%
share 49.0%
|
2,654
-1.2%
share 50.2%
|
2,687
-3.7%
share 50.2%
|
2,790
share 48.6%
|
—
|
—
|
—
|
—
|
—
|
—
|
| Sales mix | |||||||||||
| Columbia Operations |
—
|
3,325
+26.5%
share 51.0%
|
2,628
-1.2%
share 49.8%
|
2,661
-9.7%
share 49.8%
|
2,948
share 51.4%
|
—
|
—
|
—
|
—
|
—
|
—
|
| NIPSCO Operations |
—
|
3,198
+20.5%
share 49.0%
|
2,654
-1.2%
share 50.2%
|
2,687
-3.7%
share 50.2%
|
2,790
share 48.6%
|
—
|
—
|
—
|
—
|
—
|
—
|
How these figures are calculated
Annual columns are full-year amounts from the annual report (Form 10-K, 20-F, or 40-F). If a company restates a year, the latest filed number is shown. 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
- Duke Energy CORP DUK
- Xcel Energy Inc XEL
- Exelon Corp EXC
- Consolidated Edison Inc ED
- PG&E Corp PCG
- Wec Energy Group, Inc. WEC
- Public Service Enterprise Group Inc PEG
- Ameren Corp AEE
Source: SEC EDGAR filings. This is company-reported data, not investment advice.