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5.27.26
Wilson Sonsini Advises Thea Energy on $100 Million Series B
On May 27, 2026, Thea Energy, a technology company advancing the stellarator for the commercialization of an abundant source of baseload fusion power, announced it has raised $100 million in Series B funding that draws support from Thomas Tull’s US Innovative Technology Fund (USIT), General Innovation Capital Partners (GICP), Linse Capital, Calm Ventures, Climate Capital, Divergent Capital, Emerald Technology Ventures, Gaingels, Idemitsu Kosan, Overlay Capital, Timescale Ventures, and Whatif Ventures. Wilson Sonsini Goodrich & Rosati advised Thea Energy on the transaction.
Press Releases
5.05.26
Wilson Sonsini Adds Project Finance Leader Ken Sanocki to Expand Energy and Climate Solutions Practice
SAN FRANCISCO, CA (May 5, 2026)—Wilson Sonsini Goodrich & Rosati, the premier provider of legal services to technology, life sciences, and growth enterprises worldwide, today announced that Ken Sanocki has joined the firm as a partner in its Energy and Climate Solutions (ECS) practice in San Francisco. His addition enhances the firm’s ability to advise clients across the full lifecycle of energy infrastructure financing—from early-stage development through complex capital markets transactions.
Client Highlights
4.20.26
Wilson Sonsini Advises Energy Peace Partners in Co-Management of P-REC Aggregation Facility
On March 25, 2026, African Development Bank Group and Nordic Development Fund announced the commitment of $11.3 million to pilot the Peace Renewable Energy Certificate (P-REC) Aggregation Facility, a pioneering initiative that will, for the first time, deploy renewable energy certificates as a direct funding instrument for a portfolio of mini-grids across Africa. The facility will be co-managed by Camco Clean Energy, a climate and impact fund manager, and Energy Peace Partners (EPP), a coalition that leverages climate finance solutions. Wilson Sonsini Goodrich & Rosati served as pro bono legal counsel to EPP on the transaction.
Client Highlights
4.17.26
Wilson Sonsini Advises Zanskar on Close of $40 Million in Novel Development Capital Financing
On April 16, 2026, Zanskar, the first AI-native geothermal energy company, announced the closing of $40 million in a Development Capital Facility. Wilson Sonsini Goodrich & Rosati advised Zanskar on the transaction, which is among the first ever structured for early-stage geothermal development. The financing was co-led by Just Climate and Spring Lane Capital, with additional capital committed by Tierra Adentro Growth Capital.
The Development Capital Facility draws on best practices from the renewables and natural resource sectors, establishing a revolving development credit facility designed to accelerate project development across Zanskar’s growing portfolio. The non-recourse facility covers key pre-construction activities, bridging projects to traditional bank project financing, and is structured to upsize to $100 million as Zanskar’s portfolio scales.
The financing transaction strengthens Zanskar’s ability to commercialize its pipeline of naturally occurring geothermal systems and sets a scalable financing precedent for greenfield geothermal as a recognized asset class across the United States.
The Wilson Sonsini team that advised Zanskar on the transaction included Scott Zimmermann, Jason Slagle, Nicole Gambino, Bob O’Connor, Jordana Palgon, and Jenae Sharp.
The Development Capital Facility draws on best practices from the renewables and natural resource sectors, establishing a revolving development credit facility designed to accelerate project development across Zanskar’s growing portfolio. The non-recourse facility covers key pre-construction activities, bridging projects to traditional bank project financing, and is structured to upsize to $100 million as Zanskar’s portfolio scales.
The financing transaction strengthens Zanskar’s ability to commercialize its pipeline of naturally occurring geothermal systems and sets a scalable financing precedent for greenfield geothermal as a recognized asset class across the United States.
The Wilson Sonsini team that advised Zanskar on the transaction included Scott Zimmermann, Jason Slagle, Nicole Gambino, Bob O’Connor, Jordana Palgon, and Jenae Sharp.
Client Highlights
3.02.26
Wilson Sonsini Advises Sense on Strategic Investment from Analog Devices
On January 27, 2026, Sense, a leader in grid edge intelligence, announced it has received a strategic investment from Analog Devices, Inc. (ADI), a global semiconductor leader that bridges the physical and digital worlds to enable breakthroughs at the Intelligent Edge. This new investment enables further development of grid edge intelligence and management solutions for grid operators. Together, the companies will work with smart meter developers and others in the energy industry to accelerate the adoption of high-performance data and computation capabilities to enable a smarter grid. Wilson Sonsini Goodrich & Rosati advised Sense on the transaction.
Client Highlights
2.18.26
Wilson Sonsini Advises Heron Power on $140 Million Series B
On February 18, 2026, Heron Power, an energy infrastructure company, announced the closing of $140 million in Series B financing co-led by Andreessen Horowitz’s (a16z) American Dynamism Fund and Breakthrough Energy Ventures, with participation from existing investors Capricorn Investment Group, Energy Impact Partners, Valor Atreides AI Fund, and Gigascale Capital. Wilson Sonsini Goodrich & Rosati advised Heron Power on the transaction.
Client Highlights
2.05.26
Wilson Sonsini Advises Lunar Energy on $232 Million in Financings
On February 4, 2026, Lunar Energy, the leader in integrated home battery systems and Virtual Power Plant software, announced it raised $102 million in an oversubscribed Series D round led by B Capital and Prelude Ventures. This round follows a previously unannounced Series C financing of $130 million led by Activate Capital, resulting in a total of $232 million in new funding. Wilson Sonsini Goodrich & Rosati advised Lunar Energy on these financing transactions.
Client Highlights
2.02.26
Wilson Sonsini Advises ESS Tech on $15 Million Registered Direct Offering
On January 29, 2026, ESS Tech, a leading manufacturer of long-duration energy storage systems (LDES) for commercial and utility-scale applications, announced that it has entered into definitive agreements in a registered direct offering with institutional investors for the purchase and sale of approximately $15 million of shares of common stock and pre-funded warrants at a price of $1.75 per share of common stock, which price was a premium to the closing price on January 28, 2026. Wilson Sonsini Goodrich & Rosati advised ESS Tech on the transaction.
Client Highlights
1.26.26
Wilson Sonsini Advises Sage Geosystems on $97 Million Series B and Strategic Agreement with Ormat
On January 21, 2026, Sage Geosystems, the company pioneering Pressure Geothermal, closed over $97 million in Series B funding to advance its geothermal power generation and energy storage solutions, including its first commercial next-generation geothermal power generation facility. Ormat Technologies and Carbon Direct Capital co-led Sage’s Series B round, representing the full backing of Sage and Pressure Geothermal technology from leaders in geothermal energy and growth capital.
Client Highlights
1.15.26
Wilson Sonsini Advises Clearway on 1.17 GW of Power Purchase Agreements with Google
On January 15, 2026, Clearway Energy Group (Clearway) announced the 2025 execution of three new long-term power purchase agreements (PPAs) with Google totaling 1.17 GW of carbon-free energy projects located in Missouri, Texas, and West Virginia. Under the new agreements, Clearway will deliver carbon-free energy to local grids to support Google’s data centers in SPP, ERCOT, and PJM for up to 20 years while driving economic growth across the local communities. Together, the three projects represent over $2.4 billion invested in reliable energy infrastructure. Wilson Sonsini Goodrich & Rosati advised Clearway on the negotiation of each PPA.
Client Highlights
12.11.25
Firm Advises Ebb Carbon on Initial Carbon Removal Offtake Agreement with Google
On December 10, 2025, Ebb Carbon, an ocean alkalinity enhancement and carbon removal company, announced it had signed a prepurchase agreement with Google to remove 3,500 tons of CO2 from the atmosphere. Wilson Sonsini Goodrich & Rosati advised Ebb Carbon on the transaction.
News Articles
12.08.25
Matt Christiansen Featured in WIRES Fall 2025 Newsletter
Wilson Sonsini partner and former FERC General Counsel Matt Christiansen was recently featured in the Fall 2025 WIRES Quarterly Newsletter. WIRES group is a leading non-profit voice of electric transmission owners, investors, and customers across North America.