NiSource Inc. (NI) Operating Margin: 27.78%
Is NiSource Inc.’s operating margin high or low?
NiSource Inc.'s operating margin of 27.78% is 26% above its 5-year average of 21.96%, near the high end of its 5-year range (11.76%–27.78%).
As of Wednesday, June 17, 2026. 2.30% above its 12-month average of 27.16%.
NI Operating Margin Chart
NI Average Operating Margin Chart
NI Current vs Average Operating Margin Chart
NI Operating Margin Metrics
OPERATING MARGIN
27.78%
OPERATING MARGIN AVG TTM
27.16%
OPERATING MARGIN AVG 3Y
24.87%
OPERATING MARGIN AVG 5Y
21.96%
OPERATING MARGIN AVG 10Y
18.79%
OPERATING MARGIN AVG 15Y
18.56%
OPERATING MARGIN AVG 20Y
16.06%
CURRENT VS TTM AVG
+2.30%
CURRENT VS 3Y AVG
+11.70%
CURRENT VS 5Y AVG
+26.47%
CURRENT VS 10Y AVG
+47.83%
CURRENT VS 15Y AVG
+49.66%
CURRENT VS 20Y AVG
+72.97%
NI Competitors' Operating Margin
| NAME | MARKET CAP | OPERATING MARGIN | TTM | 3Y | 5Y |
|---|---|---|---|---|---|
| NiSource Inc. (NI) | $22.65B | 27.78% | 27.16% | 24.87% | 21.96% |
| CMS Energy Corporation (CMS)vs › | $22.65B | 19.53% | 20.00% | 17.70% | 17.60% |
| American Water Works Company, Inc. (AWK)vs › | $24.95B | 36.48% | 36.62% | 35.58% | 34.30% |
| Eversource Energy (ES)vs › | $25.97B | 22.52% | 22.40% | 20.71% | 20.89% |
| Alliant Energy Corporation (LNT)vs › | $18.81B | 23.01% | 22.88% | 22.81% | 22.43% |
| Talen Energy Corporation (TLN)vs › | $18.78B | 33.09% | 4.04% | 5.38% | -8.09% |
| PPL Corporation (PPL)vs › | $26.58B | 23.53% | 22.06% | 20.28% | 22.45% |
| FirstEnergy Corp. (FE)vs › | $26.66B | 18.72% | 18.20% | 17.33% | 17.48% |
| CenterPoint Energy, Inc. (CNP)vs › | $27.89B | 22.51% | 22.79% | 20.65% | 18.82% |
| Atmos Energy Corporation (ATO)vs › | $28.32B | 35.87% | 32.86% | 28.15% | 28.06% |
Operating Efficiency
Gross Margin
55.9%
Operating Margin
27.8%
NiSource Inc. Operating Margin Formula & Definition
Operating Margin = Operating Income / Revenue
Operating margin is the percentage of revenue remaining after operating expenses, reflecting operating efficiency.
Expanded definitions: Investopedia, Wikipedia, Corporate Finance Institute
NiSource Inc. Operating Margin FAQ
- What is the operating margin for NiSource Inc. (NI)?
- The operating margin for NI stock is 27.78%.
- Is NiSource Inc.'s operating margin high or low?
- NiSource Inc.'s operating margin of 27.78% is 26% above its 5-year average of 21.96%, near the high end of its 5-year range (11.76%–27.78%).
- What is the TTM average operating margin for NiSource Inc. (NI)?
- The TTM average operating margin for NI stock is 27.16%.
- What is the 3Y average operating margin for NiSource Inc. (NI)?
- The 3Y average operating margin for NI stock is 24.87%.
- What is the 5Y average operating margin for NiSource Inc. (NI)?
- The 5Y average operating margin for NI stock is 21.96%.
- What is the 10Y average operating margin for NiSource Inc. (NI)?
- The 10Y average operating margin for NI stock is 18.79%.
- What is the 15Y average operating margin for NiSource Inc. (NI)?
- The 15Y average operating margin for NI stock is 18.56%.
- What is the 20Y average operating margin for NiSource Inc. (NI)?
- The 20Y average operating margin for NI stock is 16.06%.
NiSource Inc. Operating Margin History
| DATE | OPERATING MARGIN |
|---|---|
| 2025-12-31 | 27.63% |
| 2024-12-31 | 26.68% |
| 2023-12-31 | 23.53% |
| 2022-12-31 | 21.64% |
| 2021-12-31 | 20.55% |
| 2020-12-31 | 11.76% |
| 2019-12-31 | 17.10% |
| 2018-12-31 | 2.44% |
| 2017-12-31 | 18.90% |
| 2016-12-31 | 19.28% |
| 2015-12-31 | 17.20% |
| 2014-12-31 | 12.20% |
| 2013-12-31 | 12.34% |
| 2012-12-31 | 20.55% |
| 2011-12-31 | 15.19% |
| 2010-12-31 | 13.89% |
| 2009-12-31 | 12.05% |
| 2008-12-31 | 10.36% |
| 2007-12-31 | 10.92% |
| 2006-12-31 | 12.38% |
| 2005-12-31 | 10.68% |
| 2004-12-31 | 16.06% |
| 2003-12-31 | 17.57% |
| 2002-12-31 | 17.32% |
| 2001-12-31 | 10.67% |
| 2000-12-31 | 9.42% |
| 1999-12-31 | 13.93% |
| 1998-12-31 | 13.73% |
| 1997-12-31 | 15.69% |
| 1996-12-31 | 20.94% |
About NiSource Inc.
NiSource Inc. operates as an energy holding company, primarily functioning as a regulated natural gas and electric utility within the United States. Its business activities are organized into two main divisions: Gas Distribution Operations and Electric Operations. The company's Gas Distribution segment delivers natural gas to approximately 853,000 customers across northern Indiana, and an additional 2.4 million residential, commercial, and industrial clients throughout Ohio, Pennsylvania, Virginia, Kentucky, and Maryland. This extensive network includes about 54,600 miles of distribution main pipelines and customer service lines, along with 1,000 miles of transmission main pipelines. Through its Electric Operations, NiSource provides electricity to roughly 483,000 customers residing in 20 counties in northern Indiana, while also engaging in wholesale electricity and transmission transactions. The company maintains a diverse portfolio of power generation assets. These include coal-fired plants with capacities of 722 megawatts (MW) in Wheatfield and 455 MW in Michigan City; a 563 MW combined cycle gas turbine facility in West Terre Haute; natural gas generating units providing 155 MW in Wheatfield; hydroelectric plants contributing 9 MW in Carroll County and 7 MW in White County; and wind energy facilities in White County, Indiana, producing 102 MW and 302 MW, respectively. Originally founded in 1847, the company was known as NIPSCO Industries, Inc. before officially changing its name to NiSource Inc. in April 1999. Its corporate headquarters are located in Merrillville, Indiana.
- Sector
- Utilities
- Industry
- Regulated Gas
- CEO
- Lloyd Yates