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Hephae Energy Technology
Energy · Houston, United States · Founded 2020
Hephae Energy Technology, founded in 2020, aims to advance geothermal energy with innovative drilling tech for safer, global development MoreLess
Hephae Energy Technology, established in 2020, is a specialized developer of drilling technology designed to expand the viability of geothermal energy. The company was founded by Steve Krase (CEO) and John Clegg (President & CTO), who both transitioned from the oil and gas industry after recognizing the global potential of geothermal heat, particularly from hot dry rocks. Their shared background in developing downhole tools for harsh environments directly informs the company's approach. Hephae is focused on overcoming the temperature limitations of existing drilling equipment, which often cannot operate reliably above 200°C.
The company's core business revolves around engineering and manufacturing ultra-high temperature robotics, sensors, and integrated drilling systems for the geothermal industry. Its target clients are geothermal developers and drilling operators who need to access deeper, hotter rock formations to improve energy output and reduce the levelized cost of energy. By enabling access to these superhot rock resources, Hephae aims to make geothermal power a globally accessible, baseload energy source, independent of specific volcanic locations. Revenue is generated through the sale and deployment of its specialized drilling technologies.
Hephae's flagship product under development is the Pandora™ series, an integrated drilling system. The first iteration, Pandora210™, is a Measurement While Drilling (MWD) system rated to operate reliably at 210°C, with field trials scheduled for the second quarter of 2025. This system has been de-risked by demonstrating that its electronics can function for over 200 hours at temperatures exceeding its rating. The product suite is built on multiple pending patents for its electronics packaging and design, which includes a specially designed brushless DC motor and a board configuration optimized for heat flow. The company has a clear technology roadmap, planning to add Rotary Steerable System (RSS) technology in 2026 and release a 300°C-capable tool, the Pandora 300, by 2030.
Keywords: geothermal drilling, high-temperature electronics, downhole tools, Measurement While Drilling (MWD), Rotary Steerable System (RSS), baseload energy, hot dry rock, clean energy technology, subsurface robotics, energy independence, Pandora210, next-generation geothermal, directional drilling, well completion, energy technology, superhot rock, downhole sensors, harsh environment technology, clean power, sustainable energy
Company overview
Hephae Energy Technology company information
The essential company record, classifications and operating signals in one place.
- Status
- Operational
- Founded
- 2020
- Headquarters
- Houston, United States
- Employees
- 29
- Open positions
- 10
- Dealroom signal
- 85.3
Valuation & funding
Hephae Energy Technology funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES A✓Equity / VC | Jul 2026 | $18M | $71M | New System Ventures · Elemental Impact · Underground Ventures · Future Ventures | ↗ |
| EARLY VC✓Equity / VC | Nov 2024 | $4M | $16M | Exascale Fund · Future Ventures · Grantham Foundation · Nabors Industries | ↗ |
| GRANT✓Other financing | Jun 2024 | $50K | — | Provincial Council of Bizkaia | — |
| GRANT✓Other financing | Jul 2023 | $33K | — | Basque Government | — |
| GRANT✓Other financing | Jul 2023 | $33K | — | Provincial Council of Bizkaia | — |
| SUPPORT PROGRAM✓Other financing | Jul 2023 | BEAZ | — |
Financials
Workforce over time
Available workforce history. Financial fields without reported data are omitted.
| Year | Employees |
|---|---|
| 2026 | 31 |
| 2025 | 23 |
| 2024 | 19 |
Growth signals
Hephae Energy Technology website traffic
Latest recorded traffic for Hephae Energy Technology is 430 monthly website visits, up 7.5% over the last three months. Hephae Energy Technology's team grew 26.1% over the past year.
Hiring
Open positions at Hephae Energy Technology
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Comparisons
Hephae Energy Technology compared with similar companies
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Talent graph
Hephae Energy Technology's talent
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Investors
18 investors on Hephae Energy Technology's cap table
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Global footprint
Where Hephae Energy Technology has talent and traffic
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In the news
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Market sentiment
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