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Private Equity Daily: EIG Bets on Geothermal Energy Market With New Fund

Reported by Wsj
Sep 25, 2026· 3 min read
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Key Takeaways
  • • EIG closes inaugural geothermal fund: Energy Infrastructure Group (EIG) has achieved initial closing of EIG Geothermal Catalyst Partners, a dedicated investment vehicle targeting next-generation geothermal projects across the United States.
  • • Mid-stage development focus: The fund is structured to deploy capital at critical technical and commercial milestones, de-risking projects and enabling broader institutional participation in the sector while pursuing risk-adjusted returns aligned with EIG's disciplined investment approach.
  • • Sector tailwinds and expertise: EIG leverages decades of subsurface and energy value chain expertise to capitalize on technological innovation and improved project economics in geothermal, positioning the sector as a source of scalable, firm, reliable, low-carbon power amid growing global electricity demand.
  • • First investment deployed: The fund has already completed its inaugural investment, backing Power Planet, a US-based enhanced geothermal developer, demonstrating swift capital deployment post-closing.
  • • Market momentum: Geothermal equity investment peaked in 2024 with 25 transactions totaling $622.83 million, supported by sustained federal government backing and increased interest from technology giants making significant capacity bets in the sector.
Summary
EIG, a leading institutional investor in global energy and infrastructure, announced the initial closing of EIG Geothermal Catalyst Partners, marking a significant institutional commitment to the emerging geothermal energy sector. The fund represents a strategic bet on next-generation geothermal development in the United States, capitalizing on what EIG characterizes as a transformational moment for an industry historically underweight in institutional capital allocation.

The fund's structure prioritizes mid-stage development capital deployment, positioning EIG to support projects through critical technical and commercial milestones. By providing capital at this pivotal stage, the fund aims to reduce execution risk and create pathways for broader institutional adoption of geothermal assets. Andrew Ellenbogen, President of EIG, emphasized the firm's confidence in the sector's fundamentals, noting that geothermal can leverage decades of subsurface expertise accumulated across the broader energy sector to deliver firm, reliable, low-carbon baseload power—a critical infrastructure requirement amid accelerating global electrification.

The timing of EIG's fund launch aligns with measurable sector momentum. Climate tech investment in geothermal peaked in 2024, recording 25 transactions valued at $622.83 million, supported by sustained federal government policy backing and notable participation from technology giants exploring geothermal capacity deployment at scale. The fund has already deployed capital in its debut investment, backing Power Planet, an enhanced geothermal systems (EGS) developer, signaling management's readiness to execute against identified opportunities.

EIG's entry into dedicated geothermal investing reflects institutional recognition that the sector is transitioning from pilot-stage validation to commercial-scale development. The firm's competitive positioning rests on technical subsurface expertise and demonstrated investment experience across the energy value chain, capabilities directly transferable to complex geothermal project development. For institutional investors, EIG Geothermal Catalyst Partners represents a professionally-managed vehicle to gain exposure to a renewable energy subsector characterized by firm, dispatchable power generation capabilities and improving unit economics driven by technological advancement.

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Wsj Private Equity Daily: EIG Bets on Geothermal Energy Market With New Fund