Largest Utility Companies by Market Capitalization
Approximately 607 publicly listed utility companies operate worldwide, but the sector is heavily concentrated at the top — the ten largest constituents make up roughly 59% of the utilities slice within the S&P 500. Under the GICS classification developed by MSCI and S&P, the utilities sector covers electric, gas, and water utilities as well as independent power producers and renewable electricity generators.
Electric utilities account for about 65.7% of the sector, followed by multi-utilities at 26.7%. The remainder is split among gas utilities, water utilities, and independent power producers. Leading names span several countries and sub-industries:
- Regulated electric: NextEra Energy (NEE), The Southern Company (SO), Duke Energy (DUK), American Electric Power (AEP) — all listed on U.S. exchanges. NextEra is also one of the world’s largest solar and wind power operators.
- Diversified electric: Iberdrola (IBE), headquartered in Spain and formed through a 1992 merger, serves more than 36 million customers across Europe, the Americas, and beyond.
- Hydroelectric power: China Yangtze Power, listed on the Shanghai Stock Exchange, manages the 22.5-gigawatt Three Gorges Dam — the world’s largest hydropower plant.
- Transmission & distribution: National Grid (NGG), based in London and also listed on the NYSE, handles electricity and gas transmission across the UK and parts of the U.S.
The United States is home to the largest concentration of listed utility companies, with over 110 publicly traded firms. Regulated utilities operate under a distinctive model: they receive monopoly rights in their service territories, but rates and capital plans must be approved by government regulators. High capital expenditure is a permanent feature, as these companies continually invest in power plants, pipelines, solar installations, and water-treatment facilities.
Popular ETFs tracking utility stocks include the Utilities Select Sector SPDR Fund (XLU), Vanguard Utilities ETF (VPU), and iShares U.S. Utilities ETF (IDU).
Regulated brokerThe following table contains a list of the largest publicly traded utility companies by market capitalization across global exchanges, covering integrated electric utilities, gas distributors, multi-utilities, and renewable energy operators. Prices and market cap figures are updated regularly to reflect current market conditions.
| Stock | Price | Change % | Marketcap |
|---|---|---|---|
 Nextera Energy NEE | $86.71 | 0.05% | 180.83B |
 Constellation Energy CEG | $276.48 | 0.88% | 98.73B |
 Southern Company SO | $93.80 | 0.76% | 105.74B |
 China Yangtze Power 600900.SS | CNY26.94 | 1.05% | 659.17B |
 Iberdrola IBE.MC | €21.19 | 1.73% | 139.65B |
 Duke Energy DUK | $124.09 | 0.19% | 96.74B |
 Enel ENEL.MI | €9.82 | 1.19% | 97.46B |
 National Grid NGG | $81.13 | 2.12% | 80.73B |
Dominion Energy D | $68.61 | 0.29% | 60.34B |
ENGIE ENGI.PA | €27.18 | 1.30% | 69.06B |
 Xcel Energy XEL | $78.58 | 1.50% | 49.05B |
Dubai Electricity and Water Authority (DEWA) DEWA.AE | AED2.87 | 2.14% | 143.50B |
Entergy ETR | $112.47 | 1.22% | 51.50B |
NTPC Limited NTPC.NS | INR367.05 | 0.34% | 3.56T |
 WEC Energy Group WEC | $113.33 | 1.04% | 36.91B |
E.ON EOAN.DE | €17.81 | 1.22% | 46.53B |
DTE Energy DTE | $147.24 | 0.58% | 30.63B |
 Verbund AG OEWA.F | €55.40 | 0.27% | 19.25B |
Naturgy NTGY.MC | €28.58 | 0.14% | 26.48B |
 American Water Works AWK | $126.10 | 0.82% | 24.62B |
Endesa ELE.MC | €38.33 | 0.79% | 39.26B |
Atmos Energy ATO | $169.25 | 0.51% | 28.25B |
Eversource Energy ES | $70.02 | 0.61% | 26.33B |
 Fortis FTS | $56.24 | 0.27% | 28.63B |
CMS Energy CMS | $74.25 | 1.19% | 22.94B |
SSE SSE.L | GBp2,347.00 | 0.95% | 28.31B |
 Tenaga Nasional TNABY | $14.99 | 9.42% | 21.84B |
Edison International EIX | $72.01 | 0.17% | 27.71B |
 Hydro One H.TO | $56.79 | 1.41% | 34.08B |
NiSource NI | $47.73 | 0.98% | 22.88B |
 Alliant Energy LNT | $73.58 | 0.79% | 19.00B |
Evergy EVRG | $83.62 | 1.35% | 19.27B |
 Power Assets 0006.HK | HKD56.60 | 0.71% | 120.62B |
EDP Group EDP.F | €4.43 | 1.12% | 18.30B |
Tata Power TATAPOWER.NS | INR405.95 | 0.89% | 1.30T |
 KEPCO 9503.T | ¥2,339.50 | 0.60% | 2.61T |
 GAIL GAIL.NS | INR177.30 | 1.96% | 1.17T |
Origin Energy ORG.AX | AUD10.79 | 0.37% | 18.59B |
 Pinnacle West Capital PNW | $103.34 | 1.00% | 12.52B |
Enel Américas ENELAM.SN | CLP83.50 | 1.20% | 8.60T |
Edison EDNR.MI | €1.95 | 0.71% | 9.22B |
Essential Utilities WTRG | $36.95 | 0.68% | 10.48B |
EDP Renováveis EDPR.LS | €13.97 | 2.19% | 14.80B |
Severn Trent SVT.L | GBp2,882.00 | 1.41% | 8.70B |
 Meridian Energy MEZ.AX | AUD4.75 | 1.66% | 12.84B |
 BKW AG BKW.SW | CHF136.00 | 0.44% | 7.18B |
OGE Energy OGE | $47.75 | 0.95% | 9.85B |
Centrica CNA.L | GBp172.75 | 0.06% | 7.82B |
 United Utilities UU.L | GBp1,297.00 | 0.62% | 9.63B |
Osaka Gas 9532.T | ¥5,451.00 | 0.76% | 2.08T |
PetGas (Petronas Gas) 6033.KL | $17.34 | 0.46% | 34.31B |
Chubu Electric Power 9502.T | ¥2,862.50 | 1.44% | 2.16T |
Adani Total Gas ATGL.NS | INR733.40 | 0.84% | 806.60B |
A2A A2A.MI | €2.27 | 0.31% | 7.11B |
Torrent Power TORNTPOWER.NS | INR1,475.20 | 2.56% | 743.36B |
UGI Corporation UGI | $33.75 | 0.18% | 7.24B |
CPFL Energia CPFE3.SA | BRL44.61 | 1.66% | 51.40B |
Equatorial Energia EQTL3.SA | BRL37.51 | 1.24% | 47.07B |
Idacorp IDA | $143.05 | 0.48% | 7.93B |
Hera Group HER.MI | €3.63 | 0.27% | 5.37B |
Public Power Corporation PPC.AT | €23.12 | 0.87% | 13.81B |
Aboitiz Power ABZPY | $12.55 | 12.85% | 4.52B |
ENGIE Brasil EGIE3.SA | BRL34.30 | 1.24% | 39.18B |
Italgas IG.MI | €10.60 | 0.80% | 10.77B |
Canadian Utilities CU.TO | $51.86 | 1.09% | 14.12B |
Pampa Energía PAM | $85.13 | 1.67% | 4.58B |
Enel Chile ENIC | $4.60 | 0.55% | 6.36B |
 Qatar Electricity & Water Company QEWS.QA | $14.47 | 0.28% | 15.92B |
New Jersey Resources NJR | $55.05 | 0.11% | 5.56B |
TXNM Energy, Inc. TXNM | $57.37 | 0.53% | 6.35B |
AGL Energy AGL.AX | AUD8.62 | 0.47% | 5.80B |
Portland General Electric POR | $50.42 | 0.47% | 5.83B |
Spire Energy SR | $76.35 | 0.91% | 4.51B |
Black Hills BKH | $72.72 | 0.04% | 5.54B |
Contact Energy CEN.NZ | NZD9.55 | 1.44% | 10.22B |
EVN Group EVN.F | €29.30 | 0.69% | 5.22B |
ONE Gas OGS | $76.52 | 0.32% | 4.80B |
ACEA ACE.MI | €21.36 | 2.02% | 4.54B |
PGE Polska PGE.WA | zł9.85 | 0.63% | 22.10B |
ATCO ACO-X.TO | $71.47 | 2.56% | 7.22B |
Tohoku Electric Power 9506.T | ¥1,041.00 | 0.76% | 520.83B |
Otter Tail OTTR | $87.89 | 0.45% | 3.69B |
MGE Energy MGEE | $76.12 | 0.26% | 2.87B |
NorthWestern Corporation NWE | $69.80 | 0.11% | 4.29B |
Gujarat Gas GUJGASLTD.NS | INR372.80 | 4.03% | 349.77B |
Indraprastha Gas IGL.NS | INR169.74 | 1.28% | 237.64B |
Avista AVA | $39.70 | 0.16% | 3.28B |
Comgás CGAS5.SA | BRL123.86 | 0.03% | 16.41B |
Pennon Group PNN.L | GBp463.40 | 0.83% | 2.19B |
Iren IRE.MI | €2.50 | 0.64% | 3.20B |
Chesapeake Utilities CPK | $119.35 | 1.04% | 2.86B |
LEW (Lechwerke) LEC.F | €66.50 | 2.21% | 2.36B |
Toho Gas 9533.T | ¥1,220.50 | 0.00% | 439.10B |
Colbún COLBUN.SN | CLP133.52 | 1.17% | 2.34T |
 ReNew Power RNW | $6.47 | 2.29% | 2.35B |
 Vector Limited VCT.NZ | NZD4.85 | 2.61% | 4.85B |
Mainova MNV6.F | €356.00 | 0.00% | 2.67B |
Enerjisa Enerji ENJSA.IS | TRY108.10 | 0.19% | 127.67B |
Minera Valparaíso MINERA.SN | CLP10 ,999.00 | 0.00% | 1.37T |
Tauron Polska TPE.WA | zł9.38 | 0.04% | 16.45B |
edenor EDN | $26.62 | 4.46% | 1.27B |
Hawaiian Electric Industries HE | $12.76 | 2.00% | 2.20B |
NW Natural NWN | $49.07 | 0.10% | 2.06B |
Genesis Energy GNE.NZ | NZD2.59 | 2.26% | 3.39B |
Mahanagar Gas MGL.NS | INR1,245.50 | 3.02% | 123.03B |
Polenergia PEP.WA | zł61.40 | 1.15% | 4.74B |
Romande Energie REHN.SW | CHF49.50 | 1.39% | 1.27B |
naturenergie holding NEAG.SW | CHF32.20 | 0.00% | 1.07B |
Superior Plus SPB.TO | $8.06 | 0.00% | 1.73B |
Electrica ECEA.F | €13.00 | 0.00% | 1.10B |
Unitil Corporation UTL | $51.18 | 0.43% | 920.77M |
Middlesex Water Company MSEX | $51.67 | 0.75% | 962.32M |
Ascopiave ASC.MI | €2.99 | 0.34% | 647.15M |
Celesc (Centrais Elétricas de Santa Catarina) CLSC4.SA | BRL136.75 | 0.44% | 5.27B |
 York Water YORW | $29.47 | 0.20% | 477.69M |
ACINQUE AC5.MI | €2.14 | 0.00% | 422.32M |
SAIBU GAS HOLDINGS CO LTD 9536.T | ¥2,213.00 | 1.12% | 79.65B |
Genie Energy GNE | $14.01 | 0.21% | 369.92M |
Artesian Resources ARTNA | $32.13 | 0.46% | 331.72M |
HOKKAIDO GAS CO 9534.T | ¥746.00 | 1.45% | 65.85B |
Pure Cycle (water) PCYO | $11.11 | 0.36% | 267.79M |
Burgenland Holding BHD.VI | €84.00 | 0.00% | 252.00M |
RGC Resources RGCO | $24.11 | 1.51% | 250.92M |
KEIYO GAS CO LTD 9539.T | ¥1,325.00 | 0.15% | 42.60B |
clearvise AG ABO.DE | €1.24 | 1.65% | 93.06M |
Fernheizwerk Neukölln FHW.F | €19.10 | 0.53% | 43.93M |