Utilities companies
Companies in the Utilities sector across the covered universe (S&P 500 + NASDAQ-100 + Dow + Russell 1000 + Russell 2000), sorted by market capitalization. Every figure is delayed data from SEC EDGAR + market data, shown with its as-of date.
- NextEra Energy (NEE) Utilities — market cap $174.4B ask →
- Southern Company (SO) Utilities — market cap $100.3B ask →
- Constellation Energy (CEG) Utilities — market cap $96.7B ask →
- Duke Energy (DUK) Utilities — market cap $93.4B ask →
- American Electric Power (AEP) Utilities — market cap $65.8B ask →
- Dominion Energy (D) Utilities — market cap $58.6B ask →
- Sempra (SRE) Utilities — market cap $54.2B ask →
- Entergy (ETR) Utilities — market cap $47.9B ask →
- Xcel Energy (XEL) Utilities — market cap $47.7B ask →
- PG&E Corporation (PCG) Utilities — market cap $47.2B ask →
- Vistra Corp . (VST) Utilities — market cap $45.7B ask →
- Exelon (EXC) Utilities — market cap $44.8B ask →
- Consolidated Edison (ED) Utilities — market cap $39.2B ask →
- Public Service Enterprise Group (PEG) Utilities — market cap $36.2B ask →
- WEC Energy Group (WEC) Utilities — market cap $34.5B ask →
- Ameren (AEE) Utilities — market cap $29.4B ask →
- Atmos Energy (ATO) Utilities — market cap $28.2B ask →
- DTE Energy (DTE) Utilities — market cap $28.1B ask →
- Edison International (EIX) Utilities — market cap $27.5B ask →
- American Water Works (AWK) Utilities — market cap $26.9B ask →
- FirstEnergy (FE) Utilities — market cap $26.6B ask →
- Eversource Energy (ES) Utilities — market cap $26.4B ask →
- PPL Corporation (PPL) Utilities — market cap $25.9B ask →
- CenterPoint Energy (CNP) Utilities — market cap $25.4B ask →
- NRG Energy (NRG) Utilities — market cap $23.8B ask →
- CMS Energy (CMS) Utilities — market cap $21.4B ask →
- NiSource (NI) Utilities — market cap $19.5B ask →
- Evergy (EVRG) Utilities — market cap $18.7B ask →
- Alliant Energy (LNT) Utilities — market cap $17.5B ask →
- Talen Energy (TLN) Utilities — market cap $15.1B ask →
- Pinnacle West Capital (PNW) Utilities — market cap $11.8B ask →
- Essential Utilities (WTRG) Utilities — market cap $11.4B ask →
- AES Corporation (AES) Utilities — market cap $10.5B ask →
- OGE Energy (OGE) Utilities — market cap $9.4B ask →
- UGI Corporation (UGI) Utilities — market cap $8.1B ask →
- National Fuel Gas (NFG) Utilities — market cap $7.8B ask →
- Oklo Inc. (OKLO) Utilities — market cap $7.8B ask →
- Idacorp (IDA) Utilities — market cap $7.5B ask →
- ORMAT TECH INC (ORA) Utilities — market cap $6.7B ask →
- Clearway Energy (Class C) (CWEN) Utilities — market cap $6.5B ask →
- SOUTHWEST GAS HOLDINGS INC (SWX) Utilities — market cap $6.4B ask →
- TXNM ENERGY INC (TXNM) Utilities — market cap $6.3B ask →
- PORTLAND GENERAL ELECTRIC (POR) Utilities — market cap $5.8B ask →
- BLACK HILLS CORP (BKH) Utilities — market cap $5.5B ask →
- NEW JERSEY RESOURCES CORP (NJR) Utilities — market cap $5.4B ask →
- Brookfield Renewable Partners (BEPC) Utilities — market cap $5.3B ask →
- BROOKFIELD INFRASTRUCTURE CORP CLA (BIPC) Utilities — market cap $5.0B ask →
- ONE GAS INC (OGS) Utilities — market cap $5.0B ask →
- SPIRE INC (SR) Utilities — market cap $4.8B ask →
- NORTHWESTERN ENERGY GROUP INC (NWE) Utilities — market cap $4.3B ask →
- MDU Resources (MDU) Utilities — market cap $4.2B ask →
- OTTER TAIL CORP (OTTR) Utilities — market cap $3.8B ask →
- AMERICAN STATES WATER (AWR) Utilities — market cap $3.5B ask →
- CHESAPEAKE UTILITIES CORP (CPK) Utilities — market cap $3.2B ask →
- AVISTA CORP (AVA) Utilities — market cap $3.1B ask →
- CALIFORNIA WATER SERVICE GROUP (CWT) Utilities — market cap $3.1B ask →
- MGE ENERGY INC (MGEE) Utilities — market cap $2.9B ask →
- H2O AMERICA (HTO) Utilities — market cap $2.7B ask →
- NORTHWEST NATURAL HOLDING COMPANY (NWN) Utilities — market cap $2.1B ask →
- HAWAIIAN ELECTRIC INDUSTRIES INC (HE) Utilities — market cap $2.0B ask →
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Frequently asked
What are the largest utilities companies?
By market capitalization, the largest utilities companies in the catalog include NextEra Energy (NEE), Southern Company (SO), Constellation Energy (CEG), Duke Energy (DUK), American Electric Power (AEP).
How many utilities companies does stocks-llm track?
stocks-llm currently lists 60 utilities companies (as of 2026-08-24), each with dated fundamentals from SEC EDGAR and market data. Informational only — not financial advice.
Data: SEC EDGAR (filings) + market data (fundamentals, delayed daily-close). Figures shown with their as-of date.
Last updated 2026-08-24.
Informational only — NOT financial advice. All figures are delayed daily-close data from SEC EDGAR & market data, shown with their as-of date.