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Energy Regulation and Competition

Open PDF
  • Enabling the Development of New Energy Resources and Infrastructure Within the Legacy Electric System

    We assist developers of utility-scale generation and energy storage projects, behind-the-meter generation and other distributed energy resources, demand response resources, and competitive and merchant transmission projects in securing authorizations and rights to build and interconnect new infrastructure, buy or sell clean energy, advance innovative technologies and disruptive business models, and provide new services.

  • Advocating for Pro-Competition Market Rules That Accommodate New Technologies

    We appear before the Federal Energy Regulatory Commission (FERC) and state public utility commissions to advocate for access to clean energy, competition, and the development of rules that create and protect market opportunities for independent power producers and competitive transmission developers.

  • A Team Led by FERC Veterans

    Wilson Sonsini’s energy regulation and competition team includes former agency officials who served in senior-level roles at FERC and have deep experience shaping the new energy regulatory landscape, advising on corporate compliance, and navigating enforcement matters.

Electricity and the infrastructure needed to generate, deliver, and efficiently use it is the lifeblood and circulatory system of the modern technology- and data-driven economy. Supporting economic prosperity while averting the worst effects of climate change requires rapidly decarbonizing the economy by transitioning to clean energy sources, deploying innovative solutions to serve and manage electricity demand, and developing the infrastructure needed to support a technologically advanced power system. This shift to a more advanced energy sector will support an economy that is cleaner, healthier, smarter, and more resilient. Many of the technologies and business models necessary to achieve those goals already exist, but powerful monopolies control key regulatory and economic barriers that presently impede the efficient and rapid evolution of the electric power sector.

Wilson Sonsini’s energy regulation and competition team advocates for innovation and competition in the regulation of electric energy across the nation. We help clients create opportunities to compete with new services, technologies, and business models in complex regulatory environments where legacy companies have long resisted change. Wilson Sonsini is the go-to law firm for companies looking to capitalize on the evolving energy and data ecosystem and emerge as winners in the new energy economy.

What We Do

Appearing before FERC and state public utility commissions, our energy regulation and competition team represents clients in advocacy to revise legacy systems and implement new regulatory regimes that support the entry and development of competitive clean energy resources. Representing the lead clean energy trade associations, we dismantle key barriers and revise skewed incentives that currently impede the efficient evolution of the electric power sector.

  • Our team specializes in supporting new market entrants that are facilitating novel and complex transactions within the organized ISO/RTO markets, regularly assisting such clients on all matters related to market participation, interconnection, transmission service, market design, resource adequacy, and stakeholder advocacy.
  • In addition to our regular practice within all restructured regional markets, our attorneys have more than 30 years of experience representing developers, independent power producers, and commercial and industrial customers, including in traditionally regulated markets where opportunities and access are limited.
  • In support of our Project Development and Transactions and Sustainability and Decarbonization practices, we assist clients in securing the necessary permits, licenses, and authorizations to facilitate physical, financial, and virtual power purchase agreements.   
  • Working closely with our transaction teams, the energy regulation and competition team ensures compliance—and facilitates necessary governmental approvals—in connection with the development, financing, and acquisition of clean energy infrastructure projects and assets throughout all areas of the U.S.

We also work closely with the firm’s regulatory team in the following areas to help clients comply with related regulatory regimes that affect the energy industry: 

  • Antitrust and Competition
  • Data, Privacy, and Cybersecurity
  • Committee on Foreign Investment in the U.S. (CFIUS)
  • Export Control and Sanctions
  • Federal Trade Commission

Representative Engagements

Our energy regulation and competition team has:

  • Represented one of the nation’s largest independent power producers in FERC proceedings involving potential tariff and policy reforms to accommodate the co-location of large data center loads with electricity generation resources.
  • Represented an independent power producer trade association and secured a unanimous victory from the U.S. Court of Appeals for the Third Circuit in a challenge to a FERC order that sought to retroactively alter the parameters of a capacity market auction administered by PJM Interconnection.
  • Represented an independent power producer in seeking FERC’s authorization, pursuant to Section 203 of the Federal Power Act, for the acquisition of a 110 MW operating photovoltaic solar facility.
  • Counseled a data center developer client on ERCOT requirements relevant to several transactions involving the development of data centers co-located with existing renewable energy generation facilities located in Texas.
  • Represented independent power producers in FERC proceedings, including complex settlement negotiations involving dozens of parties, concerning Winter Storm Elliott’s impacts on the PJM Interconnection capacity market.
  • Represented a battery storage trade association in proceedings involving reforms to the wholesale distribution access tariffs of Southern California Edison, Pacific Gas & Electric, and San Diego Gas & Electric.
  • Represented the owner of one of the largest pumped-hydro facilities in the U.S. in a proceeding to recover the costs associated with complying with certain NERC reliability standards.
  • Counseled a provider of dynamic line rating (DLR) solutions on FERC policies and proceedings relevant to the adoption of DLR on the interstate transmission system.
  • Represented the developer of a 230 MW battery storage project in successfully disputing the allocation of over $200 million in network upgrade costs to the project.
  • Represented OhmConnect in securing FERC approval of its merger with Google Nest Renew.
  • Represented a battery storage project developer in filing a complaint under Section 206 of the Federal Power Act, and securing a favorable negotiated outcome, against a regional transmission organization concerning the organization’s attempt to withdraw the interconnection request for a utility-scale battery storage project.
  • Represented a renewable energy project developer in briefing as amicus curiae before the U.S. Court of Appeals for the D.C. Circuit concerning the U.S. Supreme Court’s post-Loper Bright remand of FERC’s order concerning the interpretation of PURPA’s 80 MW size limit on small power production facilities.
  • Represented Advanced Energy United, American Clean Power Association, and the Solar Energy Industries Association in a judicial appeal of FERC Order No. 2023.
  • Represented Advanced Energy United in a judicial appeal of FERC Order No. 1920.
  • Represented Advanced Energy United in a judicial appeal of FERC orders approving the Southeast Energy Exchange Market.
  • Represented a coalition of clean energy trade associations in a FERC proceeding and associated judicial appeal involving MISO’s proposed Joint Targeted Interconnection Queue framework.
  • Represented multiple clients in seeking FERC’s authorization to make wholesale sales of energy, capacity, and ancillary services at market-based rates (MBR), and in complying with corresponding obligations under FERC’s MBR regulatory framework.
  • Represented multiple power sector clients in FERC and/or RTO/ISO enforcement and compliance matters.  
  • Helped defeat a 2017 Department of Energy (DOE) proposal that requested FERC make market changes to protect fossil fuel generation and secured a ruling from FERC declining to adopt the changes proposed by the DOE.
  • Engaged in a long-term effort in defense of the rights granted to Qualifying Facilities by the Public Utility Regulatory Policy Act of 1978 (PURPA). Engaged as SEIA’s regulatory counsel before FERC on the proceedings leading to its Order 872, the Wilson Sonsini energy regulation and competition team developed testimony and briefings submitted to federal legislators and regulators, drafted reform proposals and comments before FERC, educated state regulators on the value of long-term contracts, and appealed and briefed certain matters before the U.S. Court of Appeals for the Ninth Circuit.
  • Secured a ruling from FERC endorsing state jurisdiction over net metering in the course of defending against the petition submitted by the New England Ratepayers Association.
  • Secured a ruling from FERC invalidating the discriminatory “exit fee” within the Southwest Power Pool (SPP) that had served to effectively foreclose the addition of new voting members.
  • Helped defeat interconnection reforms proposed by PacifiCorp and secured rulings from FERC prohibiting discriminatory standards for commercial readiness.
  • Defeated interconnection reforms proposed by Southern California Edison and secured FERC approval of a settlement for a reduction in rates and implementation of new service for solar and storage resources.
  • Led stakeholders in technical conference and rulemaking proceedings before FERC to encourage the commission to accommodate state policies in wholesale energy and capacity markets.

 

Overview

Electricity and the infrastructure needed to generate, deliver, and efficiently use it is the lifeblood and circulatory system of the modern technology- and data-driven economy. Supporting economic prosperity while averting the worst effects of climate change requires rapidly decarbonizing the economy by transitioning to clean energy sources, deploying innovative solutions to serve and manage electricity demand, and developing the infrastructure needed to support a technologically advanced power system. This shift to a more advanced energy sector will support an economy that is cleaner, healthier, smarter, and more resilient. Many of the technologies and business models necessary to achieve those goals already exist, but powerful monopolies control key regulatory and economic barriers that presently impede the efficient and rapid evolution of the electric power sector.

Wilson Sonsini’s energy regulation and competition team advocates for innovation and competition in the regulation of electric energy across the nation. We help clients create opportunities to compete with new services, technologies, and business models in complex regulatory environments where legacy companies have long resisted change. Wilson Sonsini is the go-to law firm for companies looking to capitalize on the evolving energy and data ecosystem and emerge as winners in the new energy economy.

What We Do

Appearing before FERC and state public utility commissions, our energy regulation and competition team represents clients in advocacy to revise legacy systems and implement new regulatory regimes that support the entry and development of competitive clean energy resources. Representing the lead clean energy trade associations, we dismantle key barriers and revise skewed incentives that currently impede the efficient evolution of the electric power sector.

  • Our team specializes in supporting new market entrants that are facilitating novel and complex transactions within the organized ISO/RTO markets, regularly assisting such clients on all matters related to market participation, interconnection, transmission service, market design, resource adequacy, and stakeholder advocacy.
  • In addition to our regular practice within all restructured regional markets, our attorneys have more than 30 years of experience representing developers, independent power producers, and commercial and industrial customers, including in traditionally regulated markets where opportunities and access are limited.
  • In support of our Project Development and Transactions and Sustainability and Decarbonization practices, we assist clients in securing the necessary permits, licenses, and authorizations to facilitate physical, financial, and virtual power purchase agreements.   
  • Working closely with our transaction teams, the energy regulation and competition team ensures compliance—and facilitates necessary governmental approvals—in connection with the development, financing, and acquisition of clean energy infrastructure projects and assets throughout all areas of the U.S.

We also work closely with the firm’s regulatory team in the following areas to help clients comply with related regulatory regimes that affect the energy industry: 

  • Antitrust and Competition
  • Data, Privacy, and Cybersecurity
  • Committee on Foreign Investment in the U.S. (CFIUS)
  • Export Control and Sanctions
  • Federal Trade Commission

Representative Engagements

Our energy regulation and competition team has:

  • Represented one of the nation’s largest independent power producers in FERC proceedings involving potential tariff and policy reforms to accommodate the co-location of large data center loads with electricity generation resources.
  • Represented an independent power producer trade association and secured a unanimous victory from the U.S. Court of Appeals for the Third Circuit in a challenge to a FERC order that sought to retroactively alter the parameters of a capacity market auction administered by PJM Interconnection.
  • Represented an independent power producer in seeking FERC’s authorization, pursuant to Section 203 of the Federal Power Act, for the acquisition of a 110 MW operating photovoltaic solar facility.
  • Counseled a data center developer client on ERCOT requirements relevant to several transactions involving the development of data centers co-located with existing renewable energy generation facilities located in Texas.
  • Represented independent power producers in FERC proceedings, including complex settlement negotiations involving dozens of parties, concerning Winter Storm Elliott’s impacts on the PJM Interconnection capacity market.
  • Represented a battery storage trade association in proceedings involving reforms to the wholesale distribution access tariffs of Southern California Edison, Pacific Gas & Electric, and San Diego Gas & Electric.
  • Represented the owner of one of the largest pumped-hydro facilities in the U.S. in a proceeding to recover the costs associated with complying with certain NERC reliability standards.
  • Counseled a provider of dynamic line rating (DLR) solutions on FERC policies and proceedings relevant to the adoption of DLR on the interstate transmission system.
  • Represented the developer of a 230 MW battery storage project in successfully disputing the allocation of over $200 million in network upgrade costs to the project.
  • Represented OhmConnect in securing FERC approval of its merger with Google Nest Renew.
  • Represented a battery storage project developer in filing a complaint under Section 206 of the Federal Power Act, and securing a favorable negotiated outcome, against a regional transmission organization concerning the organization’s attempt to withdraw the interconnection request for a utility-scale battery storage project.
  • Represented a renewable energy project developer in briefing as amicus curiae before the U.S. Court of Appeals for the D.C. Circuit concerning the U.S. Supreme Court’s post-Loper Bright remand of FERC’s order concerning the interpretation of PURPA’s 80 MW size limit on small power production facilities.
  • Represented Advanced Energy United, American Clean Power Association, and the Solar Energy Industries Association in a judicial appeal of FERC Order No. 2023.
  • Represented Advanced Energy United in a judicial appeal of FERC Order No. 1920.
  • Represented Advanced Energy United in a judicial appeal of FERC orders approving the Southeast Energy Exchange Market.
  • Represented a coalition of clean energy trade associations in a FERC proceeding and associated judicial appeal involving MISO’s proposed Joint Targeted Interconnection Queue framework.
  • Represented multiple clients in seeking FERC’s authorization to make wholesale sales of energy, capacity, and ancillary services at market-based rates (MBR), and in complying with corresponding obligations under FERC’s MBR regulatory framework.
  • Represented multiple power sector clients in FERC and/or RTO/ISO enforcement and compliance matters.  
  • Helped defeat a 2017 Department of Energy (DOE) proposal that requested FERC make market changes to protect fossil fuel generation and secured a ruling from FERC declining to adopt the changes proposed by the DOE.
  • Engaged in a long-term effort in defense of the rights granted to Qualifying Facilities by the Public Utility Regulatory Policy Act of 1978 (PURPA). Engaged as SEIA’s regulatory counsel before FERC on the proceedings leading to its Order 872, the Wilson Sonsini energy regulation and competition team developed testimony and briefings submitted to federal legislators and regulators, drafted reform proposals and comments before FERC, educated state regulators on the value of long-term contracts, and appealed and briefed certain matters before the U.S. Court of Appeals for the Ninth Circuit.
  • Secured a ruling from FERC endorsing state jurisdiction over net metering in the course of defending against the petition submitted by the New England Ratepayers Association.
  • Secured a ruling from FERC invalidating the discriminatory “exit fee” within the Southwest Power Pool (SPP) that had served to effectively foreclose the addition of new voting members.
  • Helped defeat interconnection reforms proposed by PacifiCorp and secured rulings from FERC prohibiting discriminatory standards for commercial readiness.
  • Defeated interconnection reforms proposed by Southern California Edison and secured FERC approval of a settlement for a reduction in rates and implementation of new service for solar and storage resources.
  • Led stakeholders in technical conference and rulemaking proceedings before FERC to encourage the commission to accommodate state policies in wholesale energy and capacity markets.

 

News Articles
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.
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.
News Articles
Wilson Sonsini Lawyers Matt Christiansen and Nic Gladd Quoted by New Project Media on Department of Energy Grid Directive
Energy Secretary Chris Wright’s recent order instructs the Federal Energy Regulatory Commission (FERC) to assert federal jurisdiction over certain large-load interconnections to the power grid in an effort to expedite the interconnection of data centers.
Bylined Articles
Wilson Sonsini Attorneys Author Law360 Article: "Transource Ruling Affirms FERC’s Grid Planning Authority"
Matt Christiansen, Nic Gladd, and Rachel Neuburger, attorneys at Wilson Sonsini Goodrich & Rosati, authored a recent Law360 article titled "Transource Ruling Affirms FERC’s Grid Planning Authority."
News Articles
Matt Christiansen Quoted in Law360 on Third Circuit Grid-Planning Ruling
Wilson Sonsini partner Matt Christiansen, former General Counsel of FERC, was featured in Law360 discussing the Third Circuit’s ruling limiting states’ ability to block transmission projects approved by regional grid operators.
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.
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Insights
News Articles
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.
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.
News Articles
Wilson Sonsini Lawyers Matt Christiansen and Nic Gladd Quoted by New Project Media on Department of Energy Grid Directive
Energy Secretary Chris Wright’s recent order instructs the Federal Energy Regulatory Commission (FERC) to assert federal jurisdiction over certain large-load interconnections to the power grid in an effort to expedite the interconnection of data centers.
Bylined Articles
Wilson Sonsini Attorneys Author Law360 Article: "Transource Ruling Affirms FERC’s Grid Planning Authority"
Matt Christiansen, Nic Gladd, and Rachel Neuburger, attorneys at Wilson Sonsini Goodrich & Rosati, authored a recent Law360 article titled "Transource Ruling Affirms FERC’s Grid Planning Authority."
News Articles
Matt Christiansen Quoted in Law360 on Third Circuit Grid-Planning Ruling
Wilson Sonsini partner Matt Christiansen, former General Counsel of FERC, was featured in Law360 discussing the Third Circuit’s ruling limiting states’ ability to block transmission projects approved by regional grid operators.
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.
View All
Affiliated Programs
Infocast Transmission & Interconnection Summit 2026
Join Wilson Sonsini at the Transmission & Interconnection Summit presented by Infocast in Washington D.C. June 23-25. On June 23, Matt Christiansen will moderate the panel "Developing new Large Load Interconnection Paradigms - Impacts of 'Speed to Power' and Other Initiatives on Flexibility, Cost Allocation, and Queue Management," and Sarah Greenberg will moderate the panel "Best Practices in Interconnection: Comparing Approaches of RTOs & Transmission Owners."
Affiliated Programs
NPM US Power & Data Center Development Forum
On April 28, Scott Zimmermann will moderate the panel "Evolving power supply agreements in the data center era." at the NPM US Power & Data Center Development Forum. The event will provide insight into the convergence of power infrastructure, renewable energy, and data center development from over 300 industry experts.
Affiliated Programs
Infocast CA Clean Energy Transition Summit
Join us at the CA Clean Energy Transition Summit presented by Infocast in San Diego, CA from April 14-16. On April 14, Sarah Greenberg will moderate the panel “FERC Order No. 2023: Implementation Across the Western Energy Markets." The conference will address the new era of energy complexity as California's clean energy sector transforms.
Affiliated Programs
Energy Bar Association Western Chapter Annual Meeting 2026
Join us at the Energy Bar Association Western Chapter Annual Meeting 2026 in Phoenix, AZ on February 26th, where partner Matt Christiansen will speak on the panel "Energy, Administrative Law, and Appeals: How the U.S. Supreme Court's Recent Decisions Have Affected Energy Law Practices." The meeting is an all-day program that will provide insight on the West's evolving energy landscape.
Affiliated Programs
Infocast ERCOT Market Summit
Join Wilson Sonsini at the Infocast ERCOT Market Summit February 10-12 in Round Rock, Texas.
Affiliated Programs
New England Energy Summit
On December 2nd, partner Nic Gladd will moderate the panel "AI & Data Centers: What New England can Expect and What We can Learn" at the New England Energy Summit. The panel will discuss the lessons learned from the last year of data center growth in other markets to find the right path forward in the New England market.
View All
Events
Affiliated Programs
Infocast Transmission & Interconnection Summit 2026
Join Wilson Sonsini at the Transmission & Interconnection Summit presented by Infocast in Washington D.C. June 23-25. On June 23, Matt Christiansen will moderate the panel "Developing new Large Load Interconnection Paradigms - Impacts of 'Speed to Power' and Other Initiatives on Flexibility, Cost Allocation, and Queue Management," and Sarah Greenberg will moderate the panel "Best Practices in Interconnection: Comparing Approaches of RTOs & Transmission Owners."
Affiliated Programs
NPM US Power & Data Center Development Forum
On April 28, Scott Zimmermann will moderate the panel "Evolving power supply agreements in the data center era." at the NPM US Power & Data Center Development Forum. The event will provide insight into the convergence of power infrastructure, renewable energy, and data center development from over 300 industry experts.
Affiliated Programs
Infocast CA Clean Energy Transition Summit
Join us at the CA Clean Energy Transition Summit presented by Infocast in San Diego, CA from April 14-16. On April 14, Sarah Greenberg will moderate the panel “FERC Order No. 2023: Implementation Across the Western Energy Markets." The conference will address the new era of energy complexity as California's clean energy sector transforms.
Affiliated Programs
Energy Bar Association Western Chapter Annual Meeting 2026
Join us at the Energy Bar Association Western Chapter Annual Meeting 2026 in Phoenix, AZ on February 26th, where partner Matt Christiansen will speak on the panel "Energy, Administrative Law, and Appeals: How the U.S. Supreme Court's Recent Decisions Have Affected Energy Law Practices." The meeting is an all-day program that will provide insight on the West's evolving energy landscape.
Affiliated Programs
Infocast ERCOT Market Summit
Join Wilson Sonsini at the Infocast ERCOT Market Summit February 10-12 in Round Rock, Texas.
Affiliated Programs
New England Energy Summit
On December 2nd, partner Nic Gladd will moderate the panel "AI & Data Centers: What New England can Expect and What We can Learn" at the New England Energy Summit. The panel will discuss the lessons learned from the last year of data center growth in other markets to find the right path forward in the New England market.
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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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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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Sarah Greenberg
Associate
Washington, D.C.
Sarah Greenberg is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s energy and climate solutions practice. Sarah helps independent power producers, project developers, large energy consumers, and trade associations navigate an increasingly complex energy sector.
  • Energy and Climate Solutions
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Rachel Neuburger
Associate
Washington, D.C.
Rachel Neuburger is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the energy and climate solutions practice. Rachel helps clients navigate complex matters involving transmission development, interconnection, and participation in wholesale electric markets. She regularly advises independent power producers, project developers, and industry associations on matters before the Federal Energy Regulatory Commission (FERC) and other agencies. 

Before joining the firm, Rachel worked in the Office of the General Counsel at FERC. While at FERC, she provided counsel on proceedings involving generator interconnection, transmission planning and incentives, and administrative law issues.
  • Energy and Climate Solutions
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Bryan Shpall
Associate
Washington, D.C.
Bryan Shpall is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he is a member of the energy and climate solutions practice. Bryan regularly counsels clients on energy regulatory matters and advocates for their interests before the Federal Energy Regulatory Commission (FERC) and other federal agencies.

Prior to joining the firm, Bryan worked in the Office of the General Counsel at FERC, where he helped develop the organization’s landmark transmission planning rule. While at FERC, he also advised on matters involving organized wholesale electricity markets and transmission-related issues.
  • 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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Stephanie McFall
Associate
Seattle
Stephanie McFall (formerly Stephanie Phillips) is an associate in the Seattle office, where she is a member of the firm's energy and climate solutions group. Stephanie works on a broad range of issues affecting the solar, wind, electric vehicle, hydroelectric, energy storage, distributed energy, and other renewable energy industries. She advises clean energy market participants on regulatory and state renewable energy program compliance, and on the development of clean energy policies at the Federal Energy Regulatory Commission and state regulatory commissions. She also assists project developers of both distributed and utility-scale renewable energy projects across the United States in drafting project development and financing documents, negotiating deals, and closing transactions necessary for successful project development, including agreements dealing with electricity purchase and sale, project construction and equipment procurement, development services, project financing, and asset sales. 
  • Energy and Climate Solutions
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Jaron Goddard
Associate
Seattle
Jaron Goddard is an associate in the Seattle office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm's energy and climate solutions practice. She works on a broad range of project development, financing, regulatory, and policy issues affecting the solar, wind, hydroelectric, energy storage, energy efficiency, distributed energy resources, electric vehicle, and other renewable energy industries. Jaron combines a diverse experience as a clean energy lawyer, former U.S. Senate staff counsel involved in negotiating and drafting provisions of the Inflation Reduction Act of 2022 (IRA), and strong industry background to create solutions for her clients engaged in the clean energy transition and navigating a constantly evolving international, federal, and state legal and regulatory landscape.
  • Energy and Climate Solutions
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Katie Mansur
Associate
San Francisco
Katie Mansur is an associate in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where she is a part of the firm’s energy and climate solutions practice.
  • Energy and Climate Solutions
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Jason Slagle
Partner
San Francisco
Jason Slagle is a partner in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where he is a member of the firm's energy and climate solutions practice. Jason’s practice focuses on advising clients across solar, wind, energy storage, CCUS, green hydrogen and ammonia, energy efficiency, distributed energy resources, and other renewable technology industries. He represents emerging and established companies, private equity and debt investors, and project developers in private equity finance, debt project finance, structured finance, project development and start-up counseling. Jason’s practice also includes joint ventures, cross border transactions, and sales and acquisitions of project assets and special purpose entities, as well as general corporate matters.
  • Energy and Climate Solutions
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People
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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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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Sarah Greenberg
Associate
Washington, D.C.
Sarah Greenberg is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm’s energy and climate solutions practice. Sarah helps independent power producers, project developers, large energy consumers, and trade associations navigate an increasingly complex energy sector.
  • Energy and Climate Solutions
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Rachel Neuburger
Associate
Washington, D.C.
Rachel Neuburger is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where she is a member of the energy and climate solutions practice. Rachel helps clients navigate complex matters involving transmission development, interconnection, and participation in wholesale electric markets. She regularly advises independent power producers, project developers, and industry associations on matters before the Federal Energy Regulatory Commission (FERC) and other agencies. 

Before joining the firm, Rachel worked in the Office of the General Counsel at FERC. While at FERC, she provided counsel on proceedings involving generator interconnection, transmission planning and incentives, and administrative law issues.
  • Energy and Climate Solutions
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Bryan Shpall
Associate
Washington, D.C.
Bryan Shpall is an associate in the Washington, D.C., office of Wilson Sonsini Goodrich & Rosati, where he is a member of the energy and climate solutions practice. Bryan regularly counsels clients on energy regulatory matters and advocates for their interests before the Federal Energy Regulatory Commission (FERC) and other federal agencies.

Prior to joining the firm, Bryan worked in the Office of the General Counsel at FERC, where he helped develop the organization’s landmark transmission planning rule. While at FERC, he also advised on matters involving organized wholesale electricity markets and transmission-related issues.
  • 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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Stephanie McFall
Associate
Seattle
Stephanie McFall (formerly Stephanie Phillips) is an associate in the Seattle office, where she is a member of the firm's energy and climate solutions group. Stephanie works on a broad range of issues affecting the solar, wind, electric vehicle, hydroelectric, energy storage, distributed energy, and other renewable energy industries. She advises clean energy market participants on regulatory and state renewable energy program compliance, and on the development of clean energy policies at the Federal Energy Regulatory Commission and state regulatory commissions. She also assists project developers of both distributed and utility-scale renewable energy projects across the United States in drafting project development and financing documents, negotiating deals, and closing transactions necessary for successful project development, including agreements dealing with electricity purchase and sale, project construction and equipment procurement, development services, project financing, and asset sales. 
  • Energy and Climate Solutions
View Profile
Jaron Goddard
Associate
Seattle
Jaron Goddard is an associate in the Seattle office of Wilson Sonsini Goodrich & Rosati, where she is a member of the firm's energy and climate solutions practice. She works on a broad range of project development, financing, regulatory, and policy issues affecting the solar, wind, hydroelectric, energy storage, energy efficiency, distributed energy resources, electric vehicle, and other renewable energy industries. Jaron combines a diverse experience as a clean energy lawyer, former U.S. Senate staff counsel involved in negotiating and drafting provisions of the Inflation Reduction Act of 2022 (IRA), and strong industry background to create solutions for her clients engaged in the clean energy transition and navigating a constantly evolving international, federal, and state legal and regulatory landscape.
  • Energy and Climate Solutions
View Profile
Katie Mansur
Associate
San Francisco
Katie Mansur is an associate in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where she is a part of the firm’s energy and climate solutions practice.
  • Energy and Climate Solutions
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Jason Slagle
Partner
San Francisco
Jason Slagle is a partner in the San Francisco office of Wilson Sonsini Goodrich & Rosati, where he is a member of the firm's energy and climate solutions practice. Jason’s practice focuses on advising clients across solar, wind, energy storage, CCUS, green hydrogen and ammonia, energy efficiency, distributed energy resources, and other renewable technology industries. He represents emerging and established companies, private equity and debt investors, and project developers in private equity finance, debt project finance, structured finance, project development and start-up counseling. Jason’s practice also includes joint ventures, cross border transactions, and sales and acquisitions of project assets and special purpose entities, as well as general corporate matters.
  • Energy and Climate Solutions
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Related Practices
  • Antitrust and Competition
  • Energy and Climate Solutions
  • Project Development and M&A
  • Supreme Court and Appellate
  • Sustainability and Decarbonization
Related Industries
  • Clean Energy
  • Climate and Clean Technologies
Recent Insights
News Articles
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.
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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.
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Recent Events
Affiliated Programs
Infocast Transmission & Interconnection Summit 2026
Join Wilson Sonsini at the Transmission & Interconnection Summit presented by Infocast in Washington D.C. June 23-25. On June 23, Matt Christiansen will moderate the panel "Developing new Large Load Interconnection Paradigms - Impacts of 'Speed to Power' and Other Initiatives on Flexibility, Cost Allocation, and Queue Management," and Sarah Greenberg will moderate the panel "Best Practices in Interconnection: Comparing Approaches of RTOs & Transmission Owners."
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Affiliated Programs
NPM US Power & Data Center Development Forum
On April 28, Scott Zimmermann will moderate the panel "Evolving power supply agreements in the data center era." at the NPM US Power & Data Center Development Forum. The event will provide insight into the convergence of power infrastructure, renewable energy, and data center development from over 300 industry experts.
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Bylined Articles
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. 
Click here to read the full article.
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