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Sustainability and Decarbonization

Open PDF
  • Opportunity in the Face of Risk

    Wilson Sonsini helps clients go on offense, seizing opportunities to anticipate and respond to climate-influenced customer demand, create and deploy new products, and improve the bottom line through thoughtful, bold, and impactful decarbonization strategies.

  • Representing Fearless Innovators, Investors, and Lenders

    Wilson Sonsini is the law firm of choice for the undaunted and innovative companies, investors, and lenders launching ground-breaking products, services, transactions, and projects to address sustainability challenges and provide climate solutions.

  • A Mission-Driven Track Record of Energy and Climate Innovation

    We have advanced the new business models, future-forward technologies, and financing mechanisms that are revolutionizing how energy is generated, transmitted, sold, and consumed.

  • We Partner with Top Climate Solutions Investors

    We represent leading investors—including venture capital and private equity firms, domestic and offshore strategics, and financial institutions—backing the development, commercialization, and mass deployment of new energy technologies. We also represent progressive institutional investors engaged in impact investing to address ESG goals and opportunities.

Climate change, resource scarcity, and environmental, social, and governance (ESG) requirements are reshuffling the deck of winners and losers in the global business world. Most law firms advise businesses to play defense: to compartmentalize risk, delay investment, and resist change. Wilson Sonsini partners with companies that embrace change as a once-in-a-lifetime opportunity and are determined to come out on top.

Whether rooftop solar, EV fleet charging, advanced battery technologies, green data centers, corporate energy efficiency and renewable energy procurement, renewable fuels, carbon capture and sequestration, or sustainable agriculture, we have joined our clients in the risk and reward of launching and growing innovative energy companies, structuring and negotiating first-of-their-kind energy transactions, helping clients seize opportunities in complex energy markets and regulatory schemes, and pioneering creative financing structures that streamed billions into projects and companies. 

Our work in sustainability, climate, and decarbonization continues the firm’s legacy of representing technology pioneers and taking world-changing ideas from concept to implementation. We don’t just work with innovative companies—we are an innovate company, according to Fast Company’s prestigious annual list for 2022—the first time a law firm has ever received this distinction.

Over hundreds of seed rounds, private equity-backed company formations, strategic joint ventures, tax equity financings, IPOs, and long-term clean energy procurements, we have created a track record of success. Our investor-side clients know that we couple high-caliber transactional talent with deep, practical experience in the project, commercial, and regulatory areas critical to investment decisions. Fortune favors the bold, and the bold favor Wilson Sonsini.

Our Clients

Our team’s experience—and the novel, sophisticated approach we take in our work—is a key part of our brand. But it is the quality and quantity of innovative clients we work with that sets us apart from competitors and makes Wilson Sonsini a legal partner like no other.

From the dawn of semiconductors and software to today’s clean energy developments, Wilson Sonsini continues to work with the biggest name clients that are advancing climate and sustainability pursuits in markets worldwide. These companies, both large and small, are connecting formerly disconnected segments now engaged in launching sustainable products that contribute to energy efficiency and energy use reduction.

In addition to the climate solution providers, Wilson Sonsini helps companies execute on strategies to lower their carbon footprint and meet sustainability goals. From renewable energy and carbon offset procurement to implementation of carbon sequestration technologies in industrial processes, we have unique expertise to get the deals done necessary to meet climate and sustainability goals.

The examples of our work mentioned on the Representative Client Matters tab are only a fraction of the many instances when we enabled clients to complete key steps on the way to forging their unique, impressive paths to successful innovation. For a more complete client list, please contact any member of our energy and climate solutions team.

Representative Industries and Sectors

Wilson Sonsini’s team represents innovators across the sustainability and climate solutions spectrum, including start-ups and more established companies in the following industries and sectors:

  • AgTech, agriculture, and forestry
  • Battery and other energy storage technologies
  • Biofuels and biomass
  • Carbon capture, use, and sequestration
  • Distributed Energy/Behind-the-Meter Solutions
  • Energy efficiency (including building retrofits)
  • FoodTech
  • Fuel cells
  • Geothermal
  • Green building and bio-based chemicals
  • Hydrogen
  • Nuclear
  • Solar
  • Sustainable technology
  • Transmission, distribution, and grid edge/distributed resources
  • Transportation (electric vehicle, EV charging networks, biofuels, and other TransTech sectors)
  • Water
  • Wind

Wilson Sonsini also serves as primary outside counsel to industry leaders in:

  • Residential solar portfolios
  • Utility-scale solar projects
  • Financial institutions providing structured finance in the utility-scale wind and solar sectors and amassing portfolios of projects
  • Energy storage leaders
  • International strategics seeking entry into distributed generation, energy storage, and smart microgrids
  • Technology and business model innovators

A Recognized, Cross-Disciplinary Team

Wilson Sonsini’s inter-disciplinary team has industry-relevant and practical experience that includes corporate, governance, and energy law veterans who advise clients on a broad range of initiatives—from ESG policies to urban transportation ventures—regardless of complexity or scale. Our firm has built a market-leading team with a deep practice in renewable and alternative energy project development and finance on behalf of sponsors, lenders, and investors.

Our Comprehensive Experience Extends to ESG

With Wilson Sonsini’s investment mindset, strong bench in corporate structure and governance and deep understanding of the company life cycle, our firm has a unique position of strength and experience advising companies on their development and implementation of ESG strategies. Our clients are at the forefront of ESG, whether it comes to reducing their carbon footprints, implementing equitable employment policies or increasing transparency in governance and best practices for board management. Wilson Sonsini serves the ESG needs of established public and private companies, as well as Fortune 500 brands and multi-national corporations.

Overview

Climate change, resource scarcity, and environmental, social, and governance (ESG) requirements are reshuffling the deck of winners and losers in the global business world. Most law firms advise businesses to play defense: to compartmentalize risk, delay investment, and resist change. Wilson Sonsini partners with companies that embrace change as a once-in-a-lifetime opportunity and are determined to come out on top.

Whether rooftop solar, EV fleet charging, advanced battery technologies, green data centers, corporate energy efficiency and renewable energy procurement, renewable fuels, carbon capture and sequestration, or sustainable agriculture, we have joined our clients in the risk and reward of launching and growing innovative energy companies, structuring and negotiating first-of-their-kind energy transactions, helping clients seize opportunities in complex energy markets and regulatory schemes, and pioneering creative financing structures that streamed billions into projects and companies. 

Our work in sustainability, climate, and decarbonization continues the firm’s legacy of representing technology pioneers and taking world-changing ideas from concept to implementation. We don’t just work with innovative companies—we are an innovate company, according to Fast Company’s prestigious annual list for 2022—the first time a law firm has ever received this distinction.

Over hundreds of seed rounds, private equity-backed company formations, strategic joint ventures, tax equity financings, IPOs, and long-term clean energy procurements, we have created a track record of success. Our investor-side clients know that we couple high-caliber transactional talent with deep, practical experience in the project, commercial, and regulatory areas critical to investment decisions. Fortune favors the bold, and the bold favor Wilson Sonsini.

Our Clients

Our team’s experience—and the novel, sophisticated approach we take in our work—is a key part of our brand. But it is the quality and quantity of innovative clients we work with that sets us apart from competitors and makes Wilson Sonsini a legal partner like no other.

From the dawn of semiconductors and software to today’s clean energy developments, Wilson Sonsini continues to work with the biggest name clients that are advancing climate and sustainability pursuits in markets worldwide. These companies, both large and small, are connecting formerly disconnected segments now engaged in launching sustainable products that contribute to energy efficiency and energy use reduction.

In addition to the climate solution providers, Wilson Sonsini helps companies execute on strategies to lower their carbon footprint and meet sustainability goals. From renewable energy and carbon offset procurement to implementation of carbon sequestration technologies in industrial processes, we have unique expertise to get the deals done necessary to meet climate and sustainability goals.

The examples of our work mentioned on the Representative Client Matters tab are only a fraction of the many instances when we enabled clients to complete key steps on the way to forging their unique, impressive paths to successful innovation. For a more complete client list, please contact any member of our energy and climate solutions team.

Representative Industries and Sectors

Wilson Sonsini’s team represents innovators across the sustainability and climate solutions spectrum, including start-ups and more established companies in the following industries and sectors:

  • AgTech, agriculture, and forestry
  • Battery and other energy storage technologies
  • Biofuels and biomass
  • Carbon capture, use, and sequestration
  • Distributed Energy/Behind-the-Meter Solutions
  • Energy efficiency (including building retrofits)
  • FoodTech
  • Fuel cells
  • Geothermal
  • Green building and bio-based chemicals
  • Hydrogen
  • Nuclear
  • Solar
  • Sustainable technology
  • Transmission, distribution, and grid edge/distributed resources
  • Transportation (electric vehicle, EV charging networks, biofuels, and other TransTech sectors)
  • Water
  • Wind

Wilson Sonsini also serves as primary outside counsel to industry leaders in:

  • Residential solar portfolios
  • Utility-scale solar projects
  • Financial institutions providing structured finance in the utility-scale wind and solar sectors and amassing portfolios of projects
  • Energy storage leaders
  • International strategics seeking entry into distributed generation, energy storage, and smart microgrids
  • Technology and business model innovators

A Recognized, Cross-Disciplinary Team

Wilson Sonsini’s inter-disciplinary team has industry-relevant and practical experience that includes corporate, governance, and energy law veterans who advise clients on a broad range of initiatives—from ESG policies to urban transportation ventures—regardless of complexity or scale. Our firm has built a market-leading team with a deep practice in renewable and alternative energy project development and finance on behalf of sponsors, lenders, and investors.

Our Comprehensive Experience Extends to ESG

With Wilson Sonsini’s investment mindset, strong bench in corporate structure and governance and deep understanding of the company life cycle, our firm has a unique position of strength and experience advising companies on their development and implementation of ESG strategies. Our clients are at the forefront of ESG, whether it comes to reducing their carbon footprints, implementing equitable employment policies or increasing transparency in governance and best practices for board management. Wilson Sonsini serves the ESG needs of established public and private companies, as well as Fortune 500 brands and multi-national corporations.

Client Highlights
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
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.
White Papers/Briefs
Intellectual Property Essentials for Climate Technology Developers: Balancing Protection and Partnership
This white paper, authored by Shivang Patel and Manja Sachet, with contributions from Madeline Hess, Ben Hoch, Max Learner, Bob O’Connor, Jason Slagle, and Scott Zimmermann from Wilson Sonsini, CREO and Spring Lane, provides a primer for climate technology developers on managing and protecting intellectual property (IP) rights as they transition from R&D to commercial deployment, emphasizing the importance of maintaining control over their technology while collaborating with strategic partners.
Client Highlights
Firm Advises Planet Labs on $460 Million Convertible Senior Notes Offering
On September 12, 2025, Planet Labs, PBC, completed an upsized offering of $460 million aggregate principal amount of convertible senior notes due 2030, in a private transaction. The offering amount included the exercise in full of the option that Planet Labs had granted to the initial purchasers to purchase up to an additional $60 million of notes. In connection with the offering, Planet Labs entered into privately negotiated capped call transactions with an affiliate of one of the initial purchasers and certain other financial institutions. Wilson Sonsini Goodrich & Rosati advised Planet Labs on the transaction.
Client Highlights
Firm Advises Ambient Fuels on Acquisition by Electric Hydrogen
On September 8, 2025, Electric Hydrogen, a U.S. manufacturer of advanced electrolyzers, announced it has acquired Ambient Fuels, a leading hydrogen project developer. Adding Ambient Fuels’ deep development expertise and portfolio of U.S. project sites will expand Electric Hydrogen’s ability to partner with customers on co-development of hydrogen projects and provide dedicated capital resources where appropriate. As part of the transaction, Electric Hydrogen also entered into a strategic relationship with Generate Capital, a leading infrastructure investment platform and former investor in Ambient Fuels, to offer up to $400 million in hydrogen project finance solutions around the globe. Wilson Sonsini Goodrich & Rosati advised Ambient Fuels in the transaction.
Alerts
Takeaways from CARB’s Workshop on California’s Corporate Greenhouse Gas Reporting Program
Key Takeaways
View All
Insights
Client Highlights
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
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.
White Papers/Briefs
Intellectual Property Essentials for Climate Technology Developers: Balancing Protection and Partnership
This white paper, authored by Shivang Patel and Manja Sachet, with contributions from Madeline Hess, Ben Hoch, Max Learner, Bob O’Connor, Jason Slagle, and Scott Zimmermann from Wilson Sonsini, CREO and Spring Lane, provides a primer for climate technology developers on managing and protecting intellectual property (IP) rights as they transition from R&D to commercial deployment, emphasizing the importance of maintaining control over their technology while collaborating with strategic partners.
Client Highlights
Firm Advises Planet Labs on $460 Million Convertible Senior Notes Offering
On September 12, 2025, Planet Labs, PBC, completed an upsized offering of $460 million aggregate principal amount of convertible senior notes due 2030, in a private transaction. The offering amount included the exercise in full of the option that Planet Labs had granted to the initial purchasers to purchase up to an additional $60 million of notes. In connection with the offering, Planet Labs entered into privately negotiated capped call transactions with an affiliate of one of the initial purchasers and certain other financial institutions. Wilson Sonsini Goodrich & Rosati advised Planet Labs on the transaction.
Client Highlights
Firm Advises Ambient Fuels on Acquisition by Electric Hydrogen
On September 8, 2025, Electric Hydrogen, a U.S. manufacturer of advanced electrolyzers, announced it has acquired Ambient Fuels, a leading hydrogen project developer. Adding Ambient Fuels’ deep development expertise and portfolio of U.S. project sites will expand Electric Hydrogen’s ability to partner with customers on co-development of hydrogen projects and provide dedicated capital resources where appropriate. As part of the transaction, Electric Hydrogen also entered into a strategic relationship with Generate Capital, a leading infrastructure investment platform and former investor in Ambient Fuels, to offer up to $400 million in hydrogen project finance solutions around the globe. Wilson Sonsini Goodrich & Rosati advised Ambient Fuels in the transaction.
Alerts
Takeaways from CARB’s Workshop on California’s Corporate Greenhouse Gas Reporting Program
Key Takeaways
View All
Speaking Engagements
2025 SEMI Sustainability Forum
On April 4, 2025, Wilson Sonsini partners Jindrich Kloub and Matthew McDonald will participate in the 2025 SEMI Sustainability Forum to provide expert views on the antitrust implications of corporate ESG practices and company interaction with shareholders. The Sustainability Forum brings together global semiconductor industry professionals to interact with top-tier experts on the most pressing strategy, compliance, and performance issues in corporate sustainability. SEMI members may contact Kenneth Guertin at kguertin@semi.org for an invitation to the program. 
Speaking Engagements
How Cities Can Take Advantage of Direct Pay
The BlueGreen Alliance, the Center for American Progress, Lawyers for Good Government, and the National League of Cities are hosting a virtual briefing on how cities, towns, and villages can take advantage of direct pay programs and tax credit bonuses made available through the Inflation Reduction Act. The webinar will provide insight into navigating domestic content requirements, labor standards, project documentation, bonus credits, and more.
Affiliated Programs
Renewable Energy Markets 2023
Explore the intricate relationship between renewable energy and the rapidly evolving realm of regulatory reporting and claims guidance in this engaging panel discussion. As renewable energy gains prominence in the global energy transition, experts from renewable energy, regulatory, and legal sectors will delve into how shifting regulatory frameworks impact renewable energy initiatives. Discover how claims and assurance intersect with regulatory reporting in the renewable energy sector, and uncover innovative solutions to harmonize practices and bolster credibility.
Speaking Engagements
Elective Pay & Tax Incentives Under the IRA: The What, When and, How?
Attorneys from Wilson Sonsini Goodrich & Rosati provide a legal primer on elective pay and tax incentives under the Inflation Reduction Act of 2022. Email registration is required to download slides.
Speaking Engagements
The Legal Basis for Renewable Energy Certificates
Wilson Sonsini associate Jaron Goddard is a featured panelist at the Center for Resource Solutions' (CRS') webinar on the legal basis for the use of renewable energy credits in the U.S. The webinar will summarize information in CRS’ recently updated The Legal Basis for Renewable Energy Certificates (RECs) and explain the role and functions, primary legal underpinnings, and common misunderstandings about RECs.
Affiliated Programs
ESGgo's Sustainability Breakfast Club
Wilson Sonsini is proud to support ESGgo's Sustainability Breakfast Club in an invite-only program of exclusive ESG and sustainability professionals to network over breakfast and hear from partner Amanda Urquiza about ESG legal and regulatory updates.
View All
Events
Speaking Engagements
2025 SEMI Sustainability Forum
On April 4, 2025, Wilson Sonsini partners Jindrich Kloub and Matthew McDonald will participate in the 2025 SEMI Sustainability Forum to provide expert views on the antitrust implications of corporate ESG practices and company interaction with shareholders. The Sustainability Forum brings together global semiconductor industry professionals to interact with top-tier experts on the most pressing strategy, compliance, and performance issues in corporate sustainability. SEMI members may contact Kenneth Guertin at kguertin@semi.org for an invitation to the program. 
Speaking Engagements
How Cities Can Take Advantage of Direct Pay
The BlueGreen Alliance, the Center for American Progress, Lawyers for Good Government, and the National League of Cities are hosting a virtual briefing on how cities, towns, and villages can take advantage of direct pay programs and tax credit bonuses made available through the Inflation Reduction Act. The webinar will provide insight into navigating domestic content requirements, labor standards, project documentation, bonus credits, and more.
Affiliated Programs
Renewable Energy Markets 2023
Explore the intricate relationship between renewable energy and the rapidly evolving realm of regulatory reporting and claims guidance in this engaging panel discussion. As renewable energy gains prominence in the global energy transition, experts from renewable energy, regulatory, and legal sectors will delve into how shifting regulatory frameworks impact renewable energy initiatives. Discover how claims and assurance intersect with regulatory reporting in the renewable energy sector, and uncover innovative solutions to harmonize practices and bolster credibility.
Speaking Engagements
Elective Pay & Tax Incentives Under the IRA: The What, When and, How?
Attorneys from Wilson Sonsini Goodrich & Rosati provide a legal primer on elective pay and tax incentives under the Inflation Reduction Act of 2022. Email registration is required to download slides.
Speaking Engagements
The Legal Basis for Renewable Energy Certificates
Wilson Sonsini associate Jaron Goddard is a featured panelist at the Center for Resource Solutions' (CRS') webinar on the legal basis for the use of renewable energy credits in the U.S. The webinar will summarize information in CRS’ recently updated The Legal Basis for Renewable Energy Certificates (RECs) and explain the role and functions, primary legal underpinnings, and common misunderstandings about RECs.
Affiliated Programs
ESGgo's Sustainability Breakfast Club
Wilson Sonsini is proud to support ESGgo's Sustainability Breakfast Club in an invite-only program of exclusive ESG and sustainability professionals to network over breakfast and hear from partner Amanda Urquiza about ESG legal and regulatory updates.
View All
Matthew A. Bogdan
Partner
Seattle
Matthew Bogdan is a partner in the Seattle office of Wilson Sonsini Goodrich & Rosati, where he is a member of the firm's energy and climate solutions practice. Matthew advises clients on a broad range of issues affecting the energy, infrastructure, and clean technology industries throughout the project development and financing process. He has extensive experience in the wind, solar, energy storage, electrical vehicle (EV) charging, renewable natural gas, data center, biofuels, hydropower, energy efficiency, hydrogen, and distributed energy sectors. Matthew’s clients are developing and financing the energy transition that will transform the United States over the next decade.
  • Energy and Climate Solutions
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Matthew Christiansen
Partner
Washington, D.C.
Matt Christiansen is a partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he is a member of the energy and climate solutions practice. As a former general counsel at the Federal Energy Regulatory Commission (FERC) and one of the nation’s leading energy regulatory attorneys, Matt represents a diverse range of clients, including independent power producers, hyperscalers and other large energy consumers, and trade associations, both before FERC and in the development of energy and digital infrastructure, such as data centers. 

He has extensive experience with major FERC proceedings involving energy market rules, generator and load interconnection procedures, and the development of electric transmission facilities and natural gas infrastructure. Matt specializes in crafting novel arguments that combine his unparalleled experience at FERC with his understanding of the relevant statutes, regulations, and court precedent, as well as in representing clients at every stage of the regulatory proceeding, including initial pleadings, rehearing requests, and appeals, where necessary.   

Matt also represents clients in negotiations involving the development of both energy infrastructure and digital infrastructure. He has particular expertise in negotiating FERC-jurisdictional agreements and in applying his experience with the relevant rules and regulations to secure the most favorable outcome for his clients.  

As FERC’s general counsel, Matt oversaw a team of more than 200 lawyers on all manner of adjudicatory and rulemaking matters and was involved in nearly every aspect of the commission’s work, including supervising the its activity in federal courts throughout the country. He has extensive knowledge of FERC rules and regulations under the Federal Power Act and Natural Gas Act, particularly with respect to energy markets and the development of electric transmission facilities and interstate natural gas pipelines.  

Prior to becoming general counsel, Matt was a legal advisor to FERC Commissioner Richard Glick and an attorney-advisor in FERC’s Office of General Counsel. Before joining FERC, Matt served as a law clerk to the Honorable Stephen F. Williams of the U.S. Court of Appeals for the D.C. Circuit and the Honorable Jesse M. Furman of the U.S. District Court for the Southern District of New York.

Matt is a lecturer in law at Yale Law School, where he teaches Advanced State and Federal Electricity Law.            
  • Energy and Climate Solutions
View Profile
U.P. Peter Eng
Partner
Palo Alto
Specializes in strategic patent and innovation counseling for technology start-ups.
  • Patents and Innovations
View Profile
Nicholas Gladd
Partner
Boston
Nicholas (Nic) Gladd is a partner in Wilson Sonsini Goodrich & Rosati’s energy and climate solutions practice. Nic helps independent power producers, clean energy project developers, technology companies, and investors manage risk and find competitive advantages in the increasingly complex and dynamic power sector. He is experienced in helping clients both navigate and shape regulatory frameworks at the federal and state levels, counseling on power market design, and structuring and negotiating commercial agreements for clean energy generation and energy storage projects and operating assets. 
  • Energy and Climate Solutions
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Todd G. Glass
Partner
Seattle
Todd leads a market-leading energy development and finance practice focused on the representation of energy companies, project developers, and investment banks.
  • Energy and Climate Solutions
View Profile
Randy Lewis
Partner
San Francisco
Randy Lewis is a partner at Wilson Sonsini Goodrich & Rosati. His practice focuses on the representation of technology and growth companies at all stages of their development, from seed-stage start-ups to mature public companies across industry sectors, but with an emphasis on the energy, infrastructure, internet services, internet infrastructure, consumer products, and sustainability sectors.
  • Corporate
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Peter D. Mostow
Partner
Seattle
Peter represents renewable and other energy sector clients in transactional matters.
  • Energy and Climate Solutions
View Profile
Bob O'Connor
Partner
San Francisco
Bob serves as a strategic partner to his clients and their boards of directors through a broad range of complex financing and strategic corporate transactions at all stages of their development.
  • Corporate
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Manja S. Sachet
Partner
Seattle
Manja focuses on intellectual property and technology matters in commercial and strategic corporate transactions.
  • Technology Transactions
View Profile
Scott A. Zimmermann
Partner
San Francisco
Scott Zimmermann represents companies in the solar, energy storage, energy efficiency, and distributed energy resources markets. He also helps clients in developing industries such as water and electric vehicles.
  • Energy and Climate Solutions
View Profile
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People
Matthew A. Bogdan
Partner
Seattle
Matthew Bogdan is a partner in the Seattle office of Wilson Sonsini Goodrich & Rosati, where he is a member of the firm's energy and climate solutions practice. Matthew advises clients on a broad range of issues affecting the energy, infrastructure, and clean technology industries throughout the project development and financing process. He has extensive experience in the wind, solar, energy storage, electrical vehicle (EV) charging, renewable natural gas, data center, biofuels, hydropower, energy efficiency, hydrogen, and distributed energy sectors. Matthew’s clients are developing and financing the energy transition that will transform the United States over the next decade.
  • Energy and Climate Solutions
View Profile
Matthew Christiansen
Partner
Washington, D.C.
Matt Christiansen is a partner in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he is a member of the energy and climate solutions practice. As a former general counsel at the Federal Energy Regulatory Commission (FERC) and one of the nation’s leading energy regulatory attorneys, Matt represents a diverse range of clients, including independent power producers, hyperscalers and other large energy consumers, and trade associations, both before FERC and in the development of energy and digital infrastructure, such as data centers. 

He has extensive experience with major FERC proceedings involving energy market rules, generator and load interconnection procedures, and the development of electric transmission facilities and natural gas infrastructure. Matt specializes in crafting novel arguments that combine his unparalleled experience at FERC with his understanding of the relevant statutes, regulations, and court precedent, as well as in representing clients at every stage of the regulatory proceeding, including initial pleadings, rehearing requests, and appeals, where necessary.   

Matt also represents clients in negotiations involving the development of both energy infrastructure and digital infrastructure. He has particular expertise in negotiating FERC-jurisdictional agreements and in applying his experience with the relevant rules and regulations to secure the most favorable outcome for his clients.  

As FERC’s general counsel, Matt oversaw a team of more than 200 lawyers on all manner of adjudicatory and rulemaking matters and was involved in nearly every aspect of the commission’s work, including supervising the its activity in federal courts throughout the country. He has extensive knowledge of FERC rules and regulations under the Federal Power Act and Natural Gas Act, particularly with respect to energy markets and the development of electric transmission facilities and interstate natural gas pipelines.  

Prior to becoming general counsel, Matt was a legal advisor to FERC Commissioner Richard Glick and an attorney-advisor in FERC’s Office of General Counsel. Before joining FERC, Matt served as a law clerk to the Honorable Stephen F. Williams of the U.S. Court of Appeals for the D.C. Circuit and the Honorable Jesse M. Furman of the U.S. District Court for the Southern District of New York.

Matt is a lecturer in law at Yale Law School, where he teaches Advanced State and Federal Electricity Law.            
  • Energy and Climate Solutions
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U.P. Peter Eng
Partner
Palo Alto
Specializes in strategic patent and innovation counseling for technology start-ups.
  • Patents and Innovations
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Nicholas Gladd
Partner
Boston
Nicholas (Nic) Gladd is a partner in Wilson Sonsini Goodrich & Rosati’s energy and climate solutions practice. Nic helps independent power producers, clean energy project developers, technology companies, and investors manage risk and find competitive advantages in the increasingly complex and dynamic power sector. He is experienced in helping clients both navigate and shape regulatory frameworks at the federal and state levels, counseling on power market design, and structuring and negotiating commercial agreements for clean energy generation and energy storage projects and operating assets. 
  • Energy and Climate Solutions
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Todd G. Glass
Partner
Seattle
Todd leads a market-leading energy development and finance practice focused on the representation of energy companies, project developers, and investment banks.
  • Energy and Climate Solutions
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Randy Lewis
Partner
San Francisco
Randy Lewis is a partner at Wilson Sonsini Goodrich & Rosati. His practice focuses on the representation of technology and growth companies at all stages of their development, from seed-stage start-ups to mature public companies across industry sectors, but with an emphasis on the energy, infrastructure, internet services, internet infrastructure, consumer products, and sustainability sectors.
  • Corporate
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Peter D. Mostow
Partner
Seattle
Peter represents renewable and other energy sector clients in transactional matters.
  • Energy and Climate Solutions
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Bob O'Connor
Partner
San Francisco
Bob serves as a strategic partner to his clients and their boards of directors through a broad range of complex financing and strategic corporate transactions at all stages of their development.
  • Corporate
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Manja S. Sachet
Partner
Seattle
Manja focuses on intellectual property and technology matters in commercial and strategic corporate transactions.
  • Technology Transactions
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Scott A. Zimmermann
Partner
San Francisco
Scott Zimmermann represents companies in the solar, energy storage, energy efficiency, and distributed energy resources markets. He also helps clients in developing industries such as water and electric vehicles.
  • Energy and Climate Solutions
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1. ESS, Inc.

Wilson Sonsini has represented ESS, Inc., a company that designs, builds, and deploys environmentally sustainable, low-cost, iron flow batteries for long-duration commercial and utility-scale energy storage applications. ESS’ category-defining storage battery technology is engineered to support renewables and stabilize the electrical grid. Built from earth-abundant materials, the ESS solution can be deployed in a wide variety of environments and operate across a wide temperature range.

2. FREYER AS

Wilson Sonsini represented FREYR AS in a recent SPAC deal. In January 2021, the Norway-based developer of clean, next-generation battery cell production capacity announced that it will become a publicly listed company through a business combination with Alussa Energy Acquisition Corp., a Cayman Islands exempted, publicly listed special purpose acquisition company. The transaction represents a pro forma equity value of $1.4 billion for the combined company upon closing which will be named “FREYR Battery” (Pubco). Pubco’s common stock is expected to start trading on the New York Stock Exchange under the ticker symbol FREY upon closing of the transaction, expected in the second quarter of 2021.

3. Stem, Inc.

Wilson Sonsini represented Stem, Inc. in a recent SPAC transaction. In December 2020, the company announced it had reached a definitive agreement to acquire Star Peak Energy Transition Corp through a reverse merger, resulting in the combined entity trading on the NYSE Stock Exchange under the ticker symbol STEM. Stem is a developer of AI-powered energy storage services intended to build and operate the largest digitally connected energy storage network. Their energy storage system optimizes the timing of energy use and facilitates consumers’ participation in energy markets, yielding economic and societal benefits while decarbonizing the grid, helping organizations automate energy cost savings and protect against changing rates.

Wilson Sonsini’s team also advised Stem in bidding and negotiating an agreement to manage a 345 MWh energy storage portfolio located on commercial and municipal sites in Southern California Edison territory that is owned by SK E&S and SUSI Partners. This is one of the largest portfolios of behind the meter energy storage in the world and memorializes Stem’s success over AMS in this part of the energy storage industry.

We also advised on the establishment of Stem’s joint venture with Copec to deliver energy storage solutions to customers in Chile and Columbia.

4. QUANTUMSCAPE

Wilson Sonsini represented QuantumScape in a recent SPAC transaction. In September 2020, the company—a developer of next generation solid-state lithium-metal batteries for use in electric vehicles—and Kensington Capital Acquisition Corp., a special purpose acquisition company (SPAC), announced a definitive agreement for a business combination that would result in QuantumScape becoming a publicly listed company. QuantumScape is focused on developing solid-state batteries and developing a scalable manufacturing process to commercialize its battery technology for the automotive industry.

5. Clearway Energy Group

Serving as transactional counsel to Clearway, Wilson Sonsini negotiated an approximately $50 million acquisition of a portfolio of Illinois community solar projects from Cypress Creek Renewables and negotiated a 110 MW PV/55 MW battery storage offtake agreement with Marin Clean Energy, a California Community Choice Aggregator.

Wilson Sonsini’s team also advised Clearway in a debt financing and a commitment toward tax equity financing of the 192 MW Rosamond Central Solar Project in Kern County, California. This project is notable in the industry as one of the largest projects ever financed based on stipulated contracts with a group of California-based municipalities and community choice aggregators (CCA), including East Bay Community Energy and Clean Power Alliance.

6. Nautilus Data Technologies, Inc.

Represented Nautilus Data Technologies, Inc. in closing a $100 million multi-draw, senior secured debt facility with Orion Energy Partners, L.P., focused initially on the construction and commissioning of a 6.0 MEGAWATT floating data center in Stockton, California, and subsequently on developing additional data center projects in the Nautilus pipeline.  Notably, Nautilus is a provider of highly efficient data centers, using a sustainable water-based cooling process to achieve industry leading power usage effectiveness (PUE) and significant improvements in environmental performance; this financing will allow our client to showcase and expand its transformative approach to meeting the urgent business and community demand for higher performing and more sustainable data center solutions.

7. Berenberg Alternative Assets Fund II, S.A. (with the subfund Berenberg Green Energy Junior Debt Fund III)

Represented Berenberg Alternative Assets Fund II, S.A. (with the subfund Berenberg Green Energy Junior Debt Fund III), funds established and managed by Berenberg, a German private bank, in connection with an acquisition financing provided to an affiliate of Hep Global GMBH, a German renewable energy developer, for the acquisition of US-based solar development assets from Peak Clean Energy, a US-based renewable energy developer

8. Concentric Power, Inc.

Advising Concentric on the development, financing, and regulatory approvals required for the development and financing of first of a kind microgrid providing local power-generating and distributed energy resource assets, including 34.5 MEGAWATT of solar photovoltaic, wind turbine generators, landfill gas, combined heat and power, energy storage systems, and other microgrid balance of systems, all of which are to be built as part of the Gonzales Electric Authority’s GEADirect microgrid power program in Gonzales, California. Notably, this will be one of the largest independent (not grid-tied) microgrid systems ever developed and financed in the United States.

9. SDCL Energy Efficiency Income Trust (SEEIT)

Represented SEEIT in its acquisition of a 50% interest in Primary Energy Recycling Corp., from a Fortistar-led consortium for $110 million. Primary Energy owns a portfolio of behind-the-fence generation assets, totaling 298 MEGAWATT, located at steel mills in Indiana. The projects involve three waste-to-heat power projects and a 50% stake in a coal pulverization plant located at ArcelorMittal’s steel mill in East Chicago, Indiana, as well as a gas-fired CHP plant located at U.S. Steel’s plant in Portage, Indiana.

10. Soltage, LLC

Advised Soltage, LLC in its acquisition of a 40 megawatt solar portfolio in Oregon from NewSun Energy LLC. The transaction involved painstaking regulatory and power market diligence, and renegotiation of a complex web of agreements for shared interconnection facilities and transmission rights, enabling a variety of nearby solar and energy storage projects to co-exist, optimizing the use of limited grid resources while each remaining capable of separate, non-recourse project financing.

11. Vivint Solar, Inc. and Sunrun, Inc.

Advised on the merger of Vivint Solar and Sunrun, two of the largest residential solar companies in the United States and clients of the firm, in a $9.8 billion all-stock transaction. Wilson Sonsini was the lead advisor on all structured finance aspects of the merger, including a series of tax equity, debt financings and restructuring required to support the merger closing. Wilson Sonsini also was company counsel to Vivint Solar and advised on antitrust matters.

12. Siemens Financial Services, Inc. and Siemens Industry, Inc.

Advised Siemens in establishment of a joint venture with Macquarie Capital’s Green Investment Group for the development and financing of solar, energy storage, microgrid and cogeneration energy-as-a-service projects at commercial and industrial sites across North America. The transactions involved the establishment of a platform whereby Siemens’ developed projects are acquired by the joint venture, Siemens provides engineering, procurement, construction, operations and maintenance of the projects, and project financing is provided by both Macquarie and Siemens.

13. Cupola Infrastructure Income Fund

Advised Cupola Infrastructure Income Fund, an affiliate of AMG National Bank, in a $41 million investment into Lightning Systems, a global developer of zero-emission drivetrains, structured as equity and the establishment of aa working capital facility.

14. Chevron U.S.A., Inc.

Advised Chevron on its negotiation of a Vehicle Incentive Agreement and related form of Fueling Agreement to provide monetary incentives to fleet operators to purchase new (or convert existing) class 7 or 8 trucks to run on compressed renewable natural gas from agricultural digesters, thereby increasing consumption of ultra-low Carbon Intensity compressed RNG in California.

15. Kairos Power

Advised Kairos Power in the formation of a long-term strategic joint venture transaction with Materion Corporation to develop a reliable and cost-effective supply of salt coolant for Kairos’ fluoride salt-cooled, high-temperature nuclear reactors.

16. Nautilus Data Technologies, Inc.

Advised on a $100 million multi-draw, senior secured debt facility with Orion Energy Partners, L.P., to initially finance the construction and commissioning of a 6.0 MEGAWATT floating data center in Stockton, California, and subsequently to finance additional data center projects in the Nautilus development pipeline. This is Nautilus’ first large scale project financing of its innovative floating data center technology and also involved a restructuring of Nautilus’ corporate equity investments.

Representative Client Matters

1. ESS, Inc.

Wilson Sonsini has represented ESS, Inc., a company that designs, builds, and deploys environmentally sustainable, low-cost, iron flow batteries for long-duration commercial and utility-scale energy storage applications. ESS’ category-defining storage battery technology is engineered to support renewables and stabilize the electrical grid. Built from earth-abundant materials, the ESS solution can be deployed in a wide variety of environments and operate across a wide temperature range.

2. FREYER AS

Wilson Sonsini represented FREYR AS in a recent SPAC deal. In January 2021, the Norway-based developer of clean, next-generation battery cell production capacity announced that it will become a publicly listed company through a business combination with Alussa Energy Acquisition Corp., a Cayman Islands exempted, publicly listed special purpose acquisition company. The transaction represents a pro forma equity value of $1.4 billion for the combined company upon closing which will be named “FREYR Battery” (Pubco). Pubco’s common stock is expected to start trading on the New York Stock Exchange under the ticker symbol FREY upon closing of the transaction, expected in the second quarter of 2021.

3. Stem, Inc.

Wilson Sonsini represented Stem, Inc. in a recent SPAC transaction. In December 2020, the company announced it had reached a definitive agreement to acquire Star Peak Energy Transition Corp through a reverse merger, resulting in the combined entity trading on the NYSE Stock Exchange under the ticker symbol STEM. Stem is a developer of AI-powered energy storage services intended to build and operate the largest digitally connected energy storage network. Their energy storage system optimizes the timing of energy use and facilitates consumers’ participation in energy markets, yielding economic and societal benefits while decarbonizing the grid, helping organizations automate energy cost savings and protect against changing rates.

Wilson Sonsini’s team also advised Stem in bidding and negotiating an agreement to manage a 345 MWh energy storage portfolio located on commercial and municipal sites in Southern California Edison territory that is owned by SK E&S and SUSI Partners. This is one of the largest portfolios of behind the meter energy storage in the world and memorializes Stem’s success over AMS in this part of the energy storage industry.

We also advised on the establishment of Stem’s joint venture with Copec to deliver energy storage solutions to customers in Chile and Columbia.

4. QUANTUMSCAPE

Wilson Sonsini represented QuantumScape in a recent SPAC transaction. In September 2020, the company—a developer of next generation solid-state lithium-metal batteries for use in electric vehicles—and Kensington Capital Acquisition Corp., a special purpose acquisition company (SPAC), announced a definitive agreement for a business combination that would result in QuantumScape becoming a publicly listed company. QuantumScape is focused on developing solid-state batteries and developing a scalable manufacturing process to commercialize its battery technology for the automotive industry.

5. Clearway Energy Group

Serving as transactional counsel to Clearway, Wilson Sonsini negotiated an approximately $50 million acquisition of a portfolio of Illinois community solar projects from Cypress Creek Renewables and negotiated a 110 MW PV/55 MW battery storage offtake agreement with Marin Clean Energy, a California Community Choice Aggregator.

Wilson Sonsini’s team also advised Clearway in a debt financing and a commitment toward tax equity financing of the 192 MW Rosamond Central Solar Project in Kern County, California. This project is notable in the industry as one of the largest projects ever financed based on stipulated contracts with a group of California-based municipalities and community choice aggregators (CCA), including East Bay Community Energy and Clean Power Alliance.

6. Nautilus Data Technologies, Inc.

Represented Nautilus Data Technologies, Inc. in closing a $100 million multi-draw, senior secured debt facility with Orion Energy Partners, L.P., focused initially on the construction and commissioning of a 6.0 MEGAWATT floating data center in Stockton, California, and subsequently on developing additional data center projects in the Nautilus pipeline.  Notably, Nautilus is a provider of highly efficient data centers, using a sustainable water-based cooling process to achieve industry leading power usage effectiveness (PUE) and significant improvements in environmental performance; this financing will allow our client to showcase and expand its transformative approach to meeting the urgent business and community demand for higher performing and more sustainable data center solutions.

7. Berenberg Alternative Assets Fund II, S.A. (with the subfund Berenberg Green Energy Junior Debt Fund III)

Represented Berenberg Alternative Assets Fund II, S.A. (with the subfund Berenberg Green Energy Junior Debt Fund III), funds established and managed by Berenberg, a German private bank, in connection with an acquisition financing provided to an affiliate of Hep Global GMBH, a German renewable energy developer, for the acquisition of US-based solar development assets from Peak Clean Energy, a US-based renewable energy developer

8. Concentric Power, Inc.

Advising Concentric on the development, financing, and regulatory approvals required for the development and financing of first of a kind microgrid providing local power-generating and distributed energy resource assets, including 34.5 MEGAWATT of solar photovoltaic, wind turbine generators, landfill gas, combined heat and power, energy storage systems, and other microgrid balance of systems, all of which are to be built as part of the Gonzales Electric Authority’s GEADirect microgrid power program in Gonzales, California. Notably, this will be one of the largest independent (not grid-tied) microgrid systems ever developed and financed in the United States.

9. SDCL Energy Efficiency Income Trust (SEEIT)

Represented SEEIT in its acquisition of a 50% interest in Primary Energy Recycling Corp., from a Fortistar-led consortium for $110 million. Primary Energy owns a portfolio of behind-the-fence generation assets, totaling 298 MEGAWATT, located at steel mills in Indiana. The projects involve three waste-to-heat power projects and a 50% stake in a coal pulverization plant located at ArcelorMittal’s steel mill in East Chicago, Indiana, as well as a gas-fired CHP plant located at U.S. Steel’s plant in Portage, Indiana.

10. Soltage, LLC

Advised Soltage, LLC in its acquisition of a 40 megawatt solar portfolio in Oregon from NewSun Energy LLC. The transaction involved painstaking regulatory and power market diligence, and renegotiation of a complex web of agreements for shared interconnection facilities and transmission rights, enabling a variety of nearby solar and energy storage projects to co-exist, optimizing the use of limited grid resources while each remaining capable of separate, non-recourse project financing.

11. Vivint Solar, Inc. and Sunrun, Inc.

Advised on the merger of Vivint Solar and Sunrun, two of the largest residential solar companies in the United States and clients of the firm, in a $9.8 billion all-stock transaction. Wilson Sonsini was the lead advisor on all structured finance aspects of the merger, including a series of tax equity, debt financings and restructuring required to support the merger closing. Wilson Sonsini also was company counsel to Vivint Solar and advised on antitrust matters.

12. Siemens Financial Services, Inc. and Siemens Industry, Inc.

Advised Siemens in establishment of a joint venture with Macquarie Capital’s Green Investment Group for the development and financing of solar, energy storage, microgrid and cogeneration energy-as-a-service projects at commercial and industrial sites across North America. The transactions involved the establishment of a platform whereby Siemens’ developed projects are acquired by the joint venture, Siemens provides engineering, procurement, construction, operations and maintenance of the projects, and project financing is provided by both Macquarie and Siemens.

13. Cupola Infrastructure Income Fund

Advised Cupola Infrastructure Income Fund, an affiliate of AMG National Bank, in a $41 million investment into Lightning Systems, a global developer of zero-emission drivetrains, structured as equity and the establishment of aa working capital facility.

14. Chevron U.S.A., Inc.

Advised Chevron on its negotiation of a Vehicle Incentive Agreement and related form of Fueling Agreement to provide monetary incentives to fleet operators to purchase new (or convert existing) class 7 or 8 trucks to run on compressed renewable natural gas from agricultural digesters, thereby increasing consumption of ultra-low Carbon Intensity compressed RNG in California.

15. Kairos Power

Advised Kairos Power in the formation of a long-term strategic joint venture transaction with Materion Corporation to develop a reliable and cost-effective supply of salt coolant for Kairos’ fluoride salt-cooled, high-temperature nuclear reactors.

16. Nautilus Data Technologies, Inc.

Advised on a $100 million multi-draw, senior secured debt facility with Orion Energy Partners, L.P., to initially finance the construction and commissioning of a 6.0 MEGAWATT floating data center in Stockton, California, and subsequently to finance additional data center projects in the Nautilus development pipeline. This is Nautilus’ first large scale project financing of its innovative floating data center technology and also involved a restructuring of Nautilus’ corporate equity investments.

Related Practices
  • Energy and Climate Solutions
  • Energy Regulation and Competition
  • Environmental, Social, and Governance
  • Finance and Structured Finance
  • Project Development and M&A
  • Project Finance and Tax Credit Transactions
  • Transportation Electrification
  • Technology Transactions
Related Industries
  • Clean Energy
  • Climate and Clean Technologies
  • FoodTech and AgTech
  • Mobility
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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.
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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.
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On April 4, 2025, Wilson Sonsini partners Jindrich Kloub and Matthew McDonald will participate in the 2025 SEMI Sustainability Forum to provide expert views on the antitrust implications of corporate ESG practices and company interaction with shareholders. The Sustainability Forum brings together global semiconductor industry professionals to interact with top-tier experts on the most pressing strategy, compliance, and performance issues in corporate sustainability. SEMI members may contact Kenneth Guertin at kguertin@semi.org for an invitation to the program. 
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How Cities Can Take Advantage of Direct Pay
The BlueGreen Alliance, the Center for American Progress, Lawyers for Good Government, and the National League of Cities are hosting a virtual briefing on how cities, towns, and villages can take advantage of direct pay programs and tax credit bonuses made available through the Inflation Reduction Act. The webinar will provide insight into navigating domestic content requirements, labor standards, project documentation, bonus credits, and more.
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Use It or Lose It: The Once-in-a-Generation Opportunity to Change the U.S. Electric Grid
We now face a once-in-a-generation opportunity to transform the U.S. power grid. If we fail to push forward decisively, we will be locked into the past model of vertical-integration for another 30 years and will lose the opportunity to bring substantial innovation and transformation to the electric industry. 
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