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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
client focusb2btechnologyHardwaretechnologyDeep Techsub industryClean Energybusiness modelManufacturingsectorGeothermal EnergysectorSustainable Development GoalssectorClimate TechsectorNIF defense security and resiliencesectorNIF Energy Security and Climate ChangesectorDT and LSsectorscience-basedindustryEnergy

Valuation & funding

Hephae Energy Technology funding history

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES AEquity / VC Jul 2026 $18M $71M New System Ventures · Elemental Impact · Underground Ventures · Future Ventures
EARLY VCEquity / VC Nov 2024 $4M $16M Exascale Fund · Future Ventures · Grantham Foundation · Nabors Industries
GRANTOther financing Jun 2024 $50K Provincial Council of Bizkaia
GRANTOther financing Jul 2023 $33K Basque Government
GRANTOther financing Jul 2023 $33K Provincial Council of Bizkaia
SUPPORT PROGRAMOther financing Jul 2023 BEAZ
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Financials

Workforce over time

Available workforce history. Financial fields without reported data are omitted.

YearEmployees
2026 31
2025 23
2024 19
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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.

Latest monthly visits430 3-month web change+7.5% 1-year team growth+26.1%
Monthly website visits24 observations · Aug 2024–Jul 2026
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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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Team profiled 3 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 2 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Investors

18 investors on Hephae Energy Technology's cap table

Sourced from Dealroom's funding and investor records.

Seed 2 investors entered at this stage
Basque Government
Provincial Council of Bizkaia
Series A 15 investors entered at this stage
Underground Ventures
Exascale Fund
Future Ventures
Grantham Foundation
Nabors Industries
Sustainable Investments
New System Ventures
Elemental Impact
Centaurus Capital
EXA Ventures
SIG-SSI
Alfa8
truenorthinstitute.com
Baruch Future Ventures
The International Information Management Group
Other known 1 additional known investor
BEAZ

Global footprint

Where Hephae Energy Technology has talent and traffic

Workforce by country
6 countries with
team presence
🇺🇸 United States51.7%
🇪🇸 Spain31%
🇬🇧 United Kingdom6.9%
🇨🇦 Canada3.5%
🇸🇪 Sweden3.5%
Top 5 of 6 shown

In the news

Latest news about Hephae Energy Technology

Recent press, funding announcements, and product moves mentioning Hephae Energy Technology — open to read from the original sources.

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Market sentiment

What the market is saying about Hephae Energy Technology

An AI-synthesized read of the highest-engagement posts about Hephae Energy Technology on X over the past 7 days. We rank by likes & retweets, ignore corporate channels, and surface the themes that broke out from real people.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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