Utilities in the S&P 500 Index
Comprehensive guide and performance data for the regulated electric, gas, and water companies defining the S&P 500 utilities sector in 2026.
Navigating the Utilities in the S&P 500 Index provides a window into the defensive backbone of the U.S. equity market, characterized by regulated monopolies and predictable cash flows. As a distinct segment within the broader S&P 500 section, these companies are primarily evaluated on their ability to generate consistent income through state-approved rate increases. In 2026, investors are increasingly focused on the transition to clean energy and the resulting Dividend Yields and Fundamentals that differentiate growth-oriented players from legacy providers. This directory tracks the essential market leaders, from electric giants to specialized water services, that anchor the Publicly Traded Companies by Sector and Industry framework.
Key Takeaways
Utilities are prized for high payout ratios and consistent dividends, often serving as a bond proxy for income-focused portfolios in early 2026.
Valuation is increasingly driven by rate base growth, which is the expansion of invested capital allowed by regulators to earn a fixed return.
Sector demand is non-cyclical; consumers prioritize electricity and water during economic downturns, protecting corporate earnings for firms like American Water Works (AWK).
Growth leaders such as NextEra Energy, Inc. (NEE) command higher P/E multiples by blending regulated operations with vast renewable energy portfolios.
Top Utilities in the S&P 500 Index by Market Cap (2026)
The following table tracks the largest utility constituents by valuation and current income profiles as of Q2 2026.
| Rank | Ticker | Company | Type | Market Cap | YTD % | P/E Ratio | Div Yield |
|---|---|---|---|---|---|---|---|
| 1 | NEE | NextEra Energy | Renewable/Electric | $158.4B | +6.2% | 24.5 | 2.8% |
| 2 | DUK | Duke Energy | Electric/Gas | $78.2B | +2.1% | 17.8 | 4.1% |
| 3 | SO | Southern Company | Diversified | $76.5B | +3.5% | 18.2 | 3.9% |
| 4 | SRE | Sempra | Multi-Utility | $48.9B | +1.4% | 16.5 | 3.2% |
| 5 | AEP | American Electric Power | Electric | $45.2B | -1.5% | 15.4 | 4.2% |
| 6 | D | Dominion Energy | Electric/Gas | $42.1B | +2.8% | 14.9 | 5.1% |
| 7 | EXC | Exelon Corp | Transmission | $38.7B | +0.5% | 13.8 | 3.7% |
| 8 | AWK | American Water Works | Water | $24.5B | +4.2% | 28.4 | 2.1% |
| 9 | LNT | Alliant Energy | Electric/Gas | $14.2B | +1.8% | 18.1 | 3.4% |
| 10 | PEG | Public Service Enterprise | Diversified | $34.2B | +5.4% | 16.2 | 3.5% |
Utilities in the S&P 500 Index — Complete Company List
Utilities in the S&P 500 Index
- Alliant Energy Corporation (LNT) (Diversified utilities: services provided in the Midwest Region)
- Ameren Corporation (AEE) (Diversified utilities: services provided in the Midwest Region)
- American Electric Power Company, Inc. (AEP) (Electric utilities: service provided in the Southeast and Midwest regions)
- American Water Works (AWK) (Water utility services provided in multiple regions)
- CenterPoint Energy, Inc. (CNP) (Diversified utilities: services provided in the Midwest and Southeast Regions)
- CMS Energy Corporation (CMS) (Diversified utilities: services provided in Michigan)
- Consolidated Edison Inc. (ED) (Diversified utilities: services provided in New York)
- Dominion Resources, Inc. (D) (Diversified utilities: services provided in multiple regions)
- DTE Energy Company (DTE) (Diversified utilities: services provided in Michigan)
- Duke Energy Corporation (DUK) (Diversified utilities: services provided in multiple regions)
- Edison International (EIX) (Service provided in California)
- Entergy Corporation (ETR) (Service provided in Arkansas, Louisiana, Mississippi and Texas)
- Eversource Energy (ES) (Services Provided in the Northeast Region)
- Exelon Corporation (EXC) (Services Provided in Multiple Regions)
- FirstEnergy Corporation (FE) (Service provided in the Midwest and Mid-Atlantic Regions)
- NextEra Energy, Inc. (NEE) (Service provided in Florida; also operates commercial nuclear power units in Florida, New Hampshire, Iowa and Wisconsin)
- NiSource, Inc. (NI) (Diversified utilities: services provided in Multiple Regions)
- NRG Energy, Inc. (NRG) (Electric utilities: generates this power from solar, wind, fossil and nuclear sources)
- Pacific Gas & Electric Co. (PCG) (Services Provided in California)
- Pinnacle West Capital Corporation (PNW) (Electric utilities: service provided in Arizona)
- PPL Corporation (PPL) (Services Provided in Kentucky and Pennsylvania)
- Public Service Enterprise Group Incorporated (PEG) (Services Provided in New Jersey)
- Scana Corporation (SCG) (Services provided in Georgia, North Carolina and South Carolina)
- Sempra Energy (SRE) (Services Provided in Multiple Regions; natural gas midstream assets)
- Southern Company (The) (SO) (Electric utilities: service provided in the Southeast region; nuclear units)
- WEC Energy Group (WEC) (Services Provided in Wisconsin and Michigan)
- Xcel Energy Inc. (XEL) (Services Provided in the Midwest and Western Regions)
- Dividend Yields and Fundamentals
Risks & Considerations
Interest Rate Sensitivity
Utilities carry high debt loads to fund infrastructure. Rising interest rates increase borrowing costs and often cause investors to rotate out of "bond proxy" stocks into fixed income.
Regulatory Lag and Oversight
Companies must petition state commissions for rate hikes. If a regulator denies or delays a request, the utility may face a shortfall in funding its capital expenditure projects.
Physical and Climate Risk
Extreme weather events—wildfires, hurricanes, and freezes—can cause massive infrastructure damage and liability claims, as seen in various service territories over recent years.
Decentralization Threats
The rise of rooftop solar and microgrids allows consumers to bypass traditional grids, potentially eroding the customer base of legacy regulated utilities if not managed effectively.