Energy companies in Texas
33 energy companies are indexed in Texas. Each entry below is built from public sources and links to its filings and identifiers. This is a factual directory, not a ranking.
| Company | Industry | Type | Ticker | Revenue (dated) |
|---|---|---|---|---|
| Atmos Energy | Energy | public | ATO | $4.7B (FY 2025) |
| CenterPoint Energy | Energy | public | CNP | $9.3B (FY 2025) |
| ConocoPhillips | Energy | public | COP | $52B (FY 2025) |
| EOG Resources | Energy | public | EOG | $23B (FY 2025) |
| Halliburton | Energy | public | HAL | $18B (FY 2010) |
| NOV Inc. | Energy | public | NOV | $8.7B (FY 2025) |
| NRG Energy | Energy | public | NRG | $30B (FY 2025) |
| Phillips 66 | Energy | public | PSX | $132B (FY 2025) |
| Quanta Services | Energy | public | PWR | $28B (FY 2025) |
| Brinker International | Energy, Media, Food and Beverage | public | EAT | $5.4B (FY 2025) |
| Diamondback Energy | Energy | public | FANG | $9.6B (FY 2022) |
| Kinder Morgan | Energy | public | KMI | $15B (FY 2025) |
| Plains All American Pipeline | Energy | public | PAA | $44B (FY 2025) |
| APA Corporation | Energy | public | APA | — |
| Cameron International | Energy | public | — | — |
| Dave & Buster's | Energy, Media, Food and Beverage | public | — | — |
| Enterprise Products | Energy | public | — | — |
| ExxonMobil | Energy | public | — | — |
| Marathon Oil | Energy | public | — | — |
| Noble Energy | Energy | subsidiary | — | — |
| Valero Energy | Energy | public | — | — |
| Energy Transfer Partners | Energy | public | — | — |
| Permian Basin Royalty Trust | Finance, Energy | public | PBT | — |
| Citgo | Energy | private | — | — |
| Cooper Industries | Manufacturing, Energy | private | — | — |
| Shell Oil Company | Energy | subsidiary | — | — |
| T.G.I. Friday's | Energy, Food and Beverage | subsidiary | — | — |
| XTO Energy | Energy | subsidiary | — | — |
| HKN, Inc. | Energy | private | — | — |
| Merit Energy Company | Energy | private | — | — |
| Panda Energy International | Energy | private | — | — |
| Reliant Energy | Energy | private | — | — |
| TXU Energy | Retail, Energy | subsidiary | — | — |
See all Texas companies or allenergy companies.