• Hephae Energy Technology

  Participated · Series A · Jul 2026

  Hephae Energy Technology develops ultrahigh-temperature robotics, including drilling systems designed to enable precise well positioning for geothermal projects by overcoming temperature and reliability limitations of conventional drilling tools. Its technology aims to access deeper, hotter rock to support expanded geothermal energy development and to increase drilling speed and reliability. The company is led by CEO Steve Krase and is based in Houston, TX. Financially, Hephae has now raised a total of $24.7M following its $17.8M Series A. The newly raised funds are intended to accelerate commercial deployment of its advanced drilling systems and move the company toward broader market commercialization.

• Sage Geosystems

  Participated · Series B · Jan 2026

  Sage Geosystems is a Houston-based pressure geothermal company that extracts energy from hot dry rock by harnessing both the earth’s heat and natural pressure. Its proprietary system supports three main applications: grid-scale energy storage, 24/7 power generation, and direct heating, which together broaden geothermal’s viable geography beyond traditional hydrothermal regions. The firm is currently building its first commercial pressure-geothermal power facility within an existing Ormat power plant, showcasing a pathway to low-cost, baseload renewable electricity. In 2024 Sage signed an agreement with Meta to supply up to 150 MW of geothermal baseload power for data-center expansion east of the Rocky Mountains. Proceeds from the latest financing will fund continued technology development, construction of the inaugural commercial plant, and expansion of its energy-storage offering. Following its Series B, the company has raised more than $97 million to date, backed by a mix of strategic energy players and climate-focused investors. Although Sage has not disclosed revenue or user metrics, the size of this round underscores investor confidence in its ability to scale geothermal as a global clean-energy resource.

• Ignis H2 Energy

  Participated · Series A · Feb 2025

  Ignis H2 Energy develops geothermal power-producing projects across multiple high-enthalpy regions, leveraging oil-and-gas expertise and a panel of geothermal specialists. The company is technology-agnostic and focuses on opportunities that can be developed with today’s proven geothermal technologies. Ignis applies cutting-edge machine learning models to predict, locate, and explore geothermal resources more efficiently, aiming to lower drilling risk and improve outcomes. Its portfolio includes opportunities in Turkey, Alaska, California, Nevada, Italy and other global sites. The company is targeting the development of one gigawatt of documented producible geothermal reserves by 2030. Financially, Ignis announced a Series A first close of $12.5 million to advance its exploration and development pipeline.

• GA Drilling

  Participated · Equity · Apr 2024

  GA Drilling develops drilling technologies and is advancing NexTitan, a system the company says is designed to enable faster, longer-reach and lower-emission well construction. The recent funding award from Emissions Reduction Alberta’s Drilling Technology Challenge will be used to run a live pilot of NexTitan on conventional and coiled tubing rigs. The pilot aims to validate NexTitan’s performance and strengthen the company’s positioning in geothermal and oil & gas drilling markets. The announcement frames the government-backed award as external validation that could help secure future partnerships or project awards if performance targets are met. The articles did not disclose the company’s founding year, location, past funding rounds, or financial metrics.

• Quaise

  Participated · Series A · Feb 2022

  Quaise Energy develops superhot geothermal power systems and the millimeter wave drilling technology to access deep, high-temperature rock. Its drilling approach, developed after research at MIT, ablates rock and aims to reach temperatures of roughly 300–500°C at depths beyond what conventional drilling can economically access. The company has demonstrated field progress, drilling more than 100 meters through granite in 2025 and is approaching one kilometer of depth at its Central Texas site. Quaise is both a technology innovator and project developer and is constructing Project Obsidian on federal geothermal leases in Oregon with construction underway. The company says Project Obsidian has gigawatt-scale potential and plans to deliver first electrons to the grid by 2030. Quaise has raised $230 million to date, with the recent $134 million Series B serving as the initial equity component of a broader capital program that includes project-level equity and debt.

No current team members are available.