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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.
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
3.30.26
Wilson Sonsini Advises Octopus Energy on Majority Stake Acquisition of Uplight
On March 24, 2026, Octopus Energy Group, a global clean energy and technology business driving the affordable, green energy system of the future, will cement its expansion in the U.S. by acquiring a majority stake in Uplight, a leading provider of customer engagement and flexibility management solutions that rapidly transform customer participation into dependable grid capacity. The deal is made in partnership with Schneider Electric, a global energy technology leader trusted by utilities worldwide, which will remain as a significant minority partner. The transaction is subject to customary regulatory approvals and is expected to complete later this year. Wilson Sonsini Goodrich & Rosati advised Octopus Energy 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
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.
Alerts
12.18.25
EU Rolls Back CSRD Reporting and Corporate Sustainability Due Diligence Obligations
On December 16, 2025, the European Parliament formally adopted the final text of the legislative amendments simplifying the rules on sustainable finance reporting, sustainability due diligence, and taxonomy by revising the Corporate Sustainability Reporting Directive (CSRD) and the Corporate Sustainability Due Diligence Directive (CSDDD). The legislative amendments still require approval by EU Member States in the Council of the EU before entering into force, which we expect to happen within weeks.
Newsletters
12.04.25
2025 Silicon Valley 150 Corporate Governance Report
Wilson Sonsini’s 2025 Silicon Valley 150 Corporate Governance Report reviews the corporate governance practices and disclosures of Silicon Valley’s largest public companies. The report includes information regarding board matters, officer matters, defensive measures, proxy statement disclosures, environmental, social, and governance (ESG) and sustainability reporting, stockholder proposals, activism, and executive compensation of the SV150 companies.
News Articles
11.10.25
Sarah Greenberg Honored with Sparks Award from WCEE
On November 7, 2025, Wilson Sonsini associate Sarah Greenberg was announced among the 2025 Sparks Awardees by the Women’s Council on Energy and the Environment (WCEE). The Sparks Award, launched in 2022, honors women making a mark in the early stages of their career or after a career transition, sparking innovation and significantly impacting their organization. For 40 years, WCEE has helped women in the energy and environment space advance their careers and grow their networks.
Client Highlights
11.04.25
Wilson Sonsini Advises Clearway on Power Purchase Agreement and Energy Storage Agreement Totaling 520 MW
On October 30, 2025, Clearway Energy Group announced that it has signed a 20-year power purchase agreement and a 20-year energy storage agreement with the Public Utility District No. 2 of Grant County (Grant PUD) for the Royal Slope Energy Center, a 260 MW solar and 260 MW storage facility in Grant County, Washington. Wilson Sonsini Goodrich & Rosati advised Clearway on the transaction.
Client Highlights
10.23.25
Wilson Sonsini Advises LCI on Landmark Clean Energy Deal with Google
On October 23, 2025, Low Carbon Infrastructure (LCI), I Squared Capital, and Google announced a landmark clean energy deal to develop the Broadwing Energy Project, an over-400-MW and over-1.5-million-pounds-of-steam-an-hour natural gas-fired cogeneration power plant integrated with carbon capture and sequestration (CCS) technology, located at an Illinois industrial facility operated by Archer Daniels Midland (ADM). Wilson Sonsini Goodrich & Rosati advised LCI on the transaction with Google and previously announced transactions with ADM.