HomeMarkets overviewSharesLargest energy companies by market cap 2026
The energy sector – including oil, gas and renewable utilities – remains central to global growth, powering industries and everyday life. But which firms hold the highest market values, based on end-of-day closing prices?
We’ve ranked the top publicly listed energy companies by market capitalisation – calculated by multiplying the share price by the total number of outstanding shares – as of 26 May 2026.
Our rankings show the leading energy stocks worldwide, measured by market capitalisation as of 26 May 2026. Each company’s value is presented in US dollars (USD), together with its latest share price and main country of listing.
| Rank | Company | Market cap (USD) | Share price (USD) | Country |
|---|---|---|---|---|
| 1 | Saudi Aramco | $1.8tn | $7.44 | S. Arabia |
| 2 | Exxon Mobil | $642.1bn | $154.92 | USA |
| 3 | Chevron | $381.3bn | $191.43 | USA |
| 4 | GE Vernova | $279.1bn | $1,039 | USA |
| 5 | PetroChina | $255.1bn | $1.39 | China |
| 6 | Shell | $238.5bn | $85.71 | UK |
| 7 | TotalEnergies | $203.6bn | $91.60 | France |
| 8 | Nextera Energy | $184.7bn | $88.55 | USA |
| 9 | Siemens Energy | $177.5bn | $208.61 | Germany |
| 10 | CNOOC | $162.5bn | $3.42 | China |
| 11 | Iberdrola | $157.7bn | $23.33 | Spain |
| 12 | ConocoPhillips | $146.8bn | $120.46 | USA |
| 13 | China Shenhua Energy | $143.2bn | $6.60 | China |
| 14 | Petrobras | $128.2bn | $19.90 | Brazil |
| 15 | Enbridge | $126.7bn | $58.04 | Canada |
| 16 | BP | $114.2bn | $44.36 | UK |
| 17 | Enel | $113.8bn | $11.47 | Italy |
| 18 | Southern Company | $106.6bn | $94.55 | USA |
| 19 | Constellation Energy | $106.2bn | $294.07 | USA |
| 20 | Canadian Natural Resources | $101.4bn | $48.61 | Canada |
The information on this page is based on public company disclosures. It is provided for informational purposes only and does not constitute investment advice or a recommendation to trade. Figures are accurate as of the stated date but may change without prior notice.
The energy sector moves in cycles because many projects need significant upfront investment, while supply can take time to adjust. When demand rises or supply is disrupted, oil and gas prices can spike, which may lift revenues for producers and service companies (International Energy Agency, 6 June 2024). The effect is uneven across the value chain. Upstream firms may benefit from higher realised prices, while refiners, power producers and heavy industry can face higher input costs that may not pass through fully to end-users. In electricity markets, regulated tariffs and long-term contracts can soften short-term volatility, although they may spread costs over time (European Commission, 17 November 2025).
Energy demand reflects both long-term trends and near-term conditions (World Resources Institute, 10 December 2025). Population growth, urbanisation and rising incomes can raise energy use over time, while weather, industrial activity and economic growth can affect demand more immediately. Different fuels also respond to different drivers. Oil is closely linked to transport and petrochemicals, while natural gas depends heavily on power generation, heating and industry (International Energy Agency, 12 November 2025). Electricity demand reflects the growth of appliances, air conditioning, digital services and electrified transport or heating (Oxford Institute for Energy Studies, 1 January 2025). Because these drivers vary by fuel and region, oil, gas, coal and electricity can behave differently in the same macro environment.
Government policy shapes how energy is produced, transported and used. Environmental standards, fuel quality rules and safety requirements all affect the cost of hydrocarbons (International Monetary Fund, 10 September 2012). Carbon pricing, emissions-trading systems and fuel taxes can add costs to higher-emission activities, which may encourage investment in lower-carbon options or efficiency upgrades (ICAP, accessed 26 May 2026). Subsidies, tax credits and guaranteed tariffs can lower project costs for renewables and storage, shaping the mix of new capacity added to the system (International Energy Agency, 24 October 2023). These measures can change the relative competitiveness of fuels and technologies, affecting which parts of the sector attract capital. They may also influence how quickly older, more carbon-intensive assets are retired, adapted or repurposed (OECD, 25 July 2024).
Energy is one of the most capital-intensive parts of the global economy. Oilfields, LNG terminals, pipelines, transmission networks and power plants can take years to plan, finance and build (International Energy Agency, 6 June 2024). Access to funding and the cost of capital therefore influence what gets built and when. Long payback periods also mean investors tend to focus on regulatory stability, fiscal terms and technology risks before committing capital (International Energy Agency, 24 October 2023). In hydrocarbons, exploration and development budgets often follow price cycles, which can contribute to tighter supply later if investment has been restrained. In power and renewables, auction frameworks, grid-connection rules and contracts can affect how quickly new capacity comes online (World Resources Institute, 10 December 2025). These long timelines help explain why energy supply often lags changes in demand.
Energy stocks are shares of companies involved in oil, gas or renewable power. Exposure can come from buying shares directly or trading derivatives such as contracts for difference (CFDs) – without owning the underlying asset. CFDs are traded on margin, and leverage amplifies both profits and losses. Prices may move in response to supply and demand, geopolitical events, regulation, environmental policy, or technological change.
To trade energy share CFDs, open and verify an account with a regulated CFD provider. Once set up, deposit funds and access the platform. Be mindful of margin requirements, spreads and overnight financing charges, and ensure margin levels are maintained. Traders often research company fundamentals, follow sector news, apply technical analysis or gain broader exposure via energy ETFs. A demo account can help you practise before trading with real funds.
Beginners could review a company’s financial position, production outlook and exposure to commodity prices. Applying clear risk management tools such as stop-loss orders and trading strategies can help manage downside. Standard stop-losses are not guaranteed. Guaranteed stop-loss orders (GSLOs) incur a fee if activated. Leverage magnifies both gains and losses, so avoid committing more than you can afford to lose. Using a locally regulated broker that provides negative balance protection may help limit liability beyond deposited funds, subject to applicable terms and regulation.
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