List of Publicly Traded Geothermal Power Companies
Discover the leading operators in the $67.9 billion geothermal sector, driven by 24/7 baseload reliability and massive demand from AI data centers. Explore pure-play developers and diversified service providers scaling Enhanced Geothermal Systems (EGS).
The List of Publicly Traded Geothermal Power Companies represents a critical niche within the List of Clean Energy Companies, characterized by its unique ability to provide carbon-free baseload power. Unlike solar or wind, geothermal plants operate with a capacity factor exceeding 90%, making them the preferred solution for the 24/7 energy mandates of tech giants like Google and Nvidia. While the public market is currently dominated by a few major operators, the emergence of Enhanced Geothermal Systems (EGS) is attracting billions in private and government funding. Today, companies like Ormat Technologies (ORA #1 1,100MW) lead the sector with vertically integrated operations spanning global projects. As the U.S. targets a massive 10GW expansion via EGS pilots, geothermal is transitioning from legacy steam plants to a primary component of the modern industrial grid.
Key Takeaways
Geothermal offers a 92% capacity factor, providing 24/7 reliable power that solar (25%) and wind (35%) cannot match without expensive battery storage.
Tech giants are signing record PPAs to secure geothermal energy for AI grids, driving a projected demand surge from 2GW to 10GW.
Public pure-play options are limited, with Ormat Technologies (ORA) serving as the primary vertically integrated U.S. listed stock.
Enhanced Geothermal Systems (EGS) utilize fracking-style drilling to access heat anywhere, supported by $156M in DOE pilot funding in Geothermal Power Industry Comparison Widget data.
Top List of Publicly Traded Geothermal Power Companies by Market Cap (2026)
The geothermal landscape includes vertically integrated pure-plays, energy service giants providing EGS drilling tech, and diversified renewable utilities.
| Rank | Ticker | Company | Industry | Market Cap | MW Capacity | Rev Growth | Div Yield |
|---|---|---|---|---|---|---|---|
| 1 | BKR | Baker Hughes | Energy Services | $48.0B | N/A (Services) | 12.4% | 2.1% |
| 2 | GEV | GE Vernova | Renewable Tech | $42.5B | N/A (Turbines) | 8.2% | 0.0% |
| 3 | ORA | Ormat Technologies | Pure-Play Geothermal | $4.8B | 1,100 MW | 6.1% | 0.7% |
| 4 | CWEN | Clearway Energy | Renewable Utility | $4.2B | Partial (Legacy) | 4.5% | 6.2% |
| 5 | NPIFF | Northland Power | Diversified Power | $3.9B | Diversified | 5.1% | 4.8% |
List of Publicly Traded Geothermal Power Companies — Complete Company List
List of Publicly Traded Geothermal Power Companies Listed on Major U.S. Exchanges
Geothermal Power: Small-Cap Stocks
- Ormat Technologies, Inc. (ORA) (Geothermal and recovered energy-based power plants)
Geothermal Power: Micro-Cap Stocks
- U S Geothermal Inc. (HTM) (Geothermal power projects)
Risks & Considerations
High Upfront Capital Intensity
Geothermal projects require massive initial investment for exploration and drilling before a single megawatt is produced, leading to significant project risk.
Resource Degradation
Over-extraction of steam or brine can lead to temperature and pressure drops in reservoirs, requiring expensive re-injection or additional drilling to maintain output.
Drilling & Technical Failure
Exploration drilling has a high failure rate; a significant percentage of wells may fail to reach productive geothermal temperatures, resulting in total loss of spent capital.
Limited Public Liquidity
With many innovators remaining private (like Fervo and Eavor) and legacy pure-plays delisted (HTM), public investors face limited options and concentrated risk.