As a pioneering law firm in the Energy & Climate sectors, we have deep expertise in the range of technologies, business models and strategies necessary to develop & deploy climate solutions at scale
Investment and innovation are the key ingredients to meeting the challenges posed by climate change. Recognizing this, Foley Hoag established its Energy & Climate Group in 2005—one of the first multidisciplinary practices serving the full lifecycle of renewable energy and climate solutions companies. With over two decades at the forefront of the energy transition, our attorneys and professionals are pioneers in a broad range of markets and technologies, including distributed and large-scale solar, onshore and offshore wind, energy storage, clean transportation, electricity transmission, geothermal, and many more. We provide a full suite of transactional, debt, finance, strategic, regulatory, permitting, litigation, and other counsel regarding matters and deals large and small, at the state, federal, and international levels. We built and continue to develop a full-service and committed team that works hand-in-hand with energy and climate innovators—from early-stage startups to some of the largest energy companies in the world.
Areas of Focus
From wind and solar to biogas, hydropower and geothermal energy, our legal strategies and industry insights are helping clients accelerate their clean infrastructure projects.
We represent clients developing and deploying innovative technologies that capture and sequester carbon dioxide from the atmosphere, mitigating climate change while advancing a path towards negative emissions.
We help navigate a range of issues across the entire spectrum of clean and low-carbon transportation solutions, including electric vehicles and charging infrastructure, sustainable aviation fuel, renewable natural gas, and other renewable and sustainable alternative fuels. Our expertise extends to state and federal programs supporting electric vehicles and alternative fuels and includes matters arising under the Renewable Fuel Standard, State Low Carbon Fuel Standards, emerging Clean Heat Standards, and clean-fuels-related federal tax credits such as 45Z (clean fuels production tax credit), 45V (hydrogen production tax credit), and 45Q (carbon capture tax credit).
Our team works with companies with solutions for difficult-to-decarbonize spaces, such as energy-intensive industrial processes and long-haul transportation. From clean cement to clean steel, we help clients navigate and obtain key incentives and financing to support their decarbonized solutions. This includes advising on federal programs and tax incentives supporting solutions such as hydrogen, carbon capture, long-duration energy storage, critical minerals for clean energy components, and materials recycling.
Combining deep industry knowledge with regulatory prowess, we guide utilities, developers and investors through the intricate state and federal legal and regulatory landscapes governing the build-out and operation of robust transmission networks.
We combine deep legal expertise with a passion for sustainability, empowering innovators to bring transformative climate solutions to market.
Our Energy & Climate Counsel Blog is a one-stop resource for timely analysis of legal and policy developments affecting the energy and climate sectors.
Spring Lane Capital and Just Climate in their investments in Zanskar Geothermal & Minerals, including a $115 million Series C financing and a first-of-its-kind $40 million development capital facility structured to scale to $100 million.
Climate Tech
Neglected Climate Opportunities
Neglected Climate Opportunities, the Grantham Foundation’s climate focused venture capital vehicle, in 20+ investments including Renewable Metals, Ebb Carbon, Cache Energy Storage, and Travertine Technologies.
Tough Tech
Engine Ventures
Engine Ventures in the $45 million Series A financing of Blue Energy, a manufacturer of nuclear power plants at existing fab yards and shipyards.
Critical Minerals
Nth Cycle
Nth Cycle, a leader in sustainable metals refining, in its $37 million Series B financing.
Flatiron Energy in connection with two utility-scale battery energy storage projects in Massachusetts: the Energizar project, a 250 MW/1,200 MWh facility in Chelsea supported by approximately $850 million in financing commitments, and Project Taft, a 200 MW/800 MWh project in Uxbridge supported by approximately $540 million in financing commitments.
Environmental Enforcement & Litigation
Environmental Facilities
Numerous electric generating, waste-to-energy, biomass, chemical manufacturing and mining facilities across the United States in the northeastern United States against federal Department of Justice and state Attorneys General claims under federal and state clean air acts.
Offshore Wind & Renewable Energy Infrastructure
Vineyard Wind and Park City Wind
Vineyard Wind and Park City Wind in successfully navigating Massachusetts EFSB proceedings, environmental permitting, and related appeals for the 800 MW Vineyard Wind project, North America's first utility-scale offshore wind farm, and the 804 MW Park City Wind project.
Clean Energy Tax Credits & Energy Transition Incentives
National Solar and Battery Storage Developers
National solar and battery storage developers on regulatory issues affecting tax credit transactions, including compliance with federal clean energy tax credit requirements, foreign entity of concern (FEOC) rules, and solar and wind credit phaseout provisions.
FERC & Wholesale Power Markets
Power Producer
A competitive power producer before FERC in challenging the price-suppressive aspects of a competitor's cost-of-service agreement.
Project Finance
Energy Storage & Battery Project Finance
Monarch Private Capital
Monarch Private Capital, an impact investing firm, in the substantial completion funding of a 150 MW BESS project in Brazoria County, TX developed by Nightpeak Energy.
Energy Storage Project Finance
Vitis
Vitis in the financing of a 200 MW battery energy storage project in ERCOT, including $155 million in construction-to-permanent, ITC bridge, and letter-of-credit debt facilities and a $90 million tax equity investment.
Solar & Storage Project Finance
BlueWave
BlueWave Public Benefit Corp in M&A and financing transactions, including a $91 million solar and storage portfolio financing involving U.S. Bank tax equity and KeyBank debt facilities.
Energy Procurement & Power Purchase Agreements
Akamai Technologies
Akamai Technologies in two virtual power purchase agreements (VPPAs) related to Texas wind projects
Solar & Storage Project Finance
Soltage
Soltage in over $1 billion of equity and debt financings of solar and storage project portfolios.
M&A
Renewable Energy M&A
Aggreko Energy Transition Solutions
Aggreko Energy Transition Solutions – a division of Aggreko – in its acquisition of Infiniti Energy, a U.S.-based commercial and industrial solar company, from Upper Bay Infrastructure Partners.
Energy Storage M&A
Convergent Energy and Power
Represented Convergent Energy and Power in the acquisition of 30 MW of battery energy storage assets in New York.
Energy Transition M&A
Greenwood Energy
Greenwood Energy in the acquisition of Saturn Power and its 1.4 GW solar and battery development portfolios, and in various tax equity, debt, and M&A transactions.
Solar Project Acquisitions & Divestitures
Paddle Energy
Paddle Energy in its sale of an 11-site Maine solar portfolio to Bridge Renewable Energy, as well as negotiating the purchase of a 12-site PJM portfolio.
Energy Transition M&A
Soltage
Soltage in the sale of a majority equity interest to Igneo Infrastructure Partners and in multiple portfolio M&A transactions, including the sale of its joint venture with Basalt Infrastructure Partners holding 121 MW of solar assets in North and South Carolina to Altus Power.
Cleantech Open runs the world’s largest clean technology accelerator program, having worked with over 1,800 early stage cleantech innovators to develop their business models, engage investors and secure first customers since 2005.
NY-BEST works to catalyze and grow the energy storage industry and establish New York State as a global leader in advancing energy storage as a key solution for a clean energy future.
The Oceantic Network (formerly the Business Network for Offshore Wind) informs, coordinates, and mobilizes human ingenuity, enterprise, and labor to take advantage of the urgent need to tap the vast renewable energy resources that lie offshore in the world’s oceans.
The startup competition and accelerator MassChallenge has helped entrepreneurs from more than 54 countries solve some of the world's biggest challenges. Foley Hoag has been a proud supporter and partner since day one. Our team has been engaged as mentors, judges and teachers to 3,000+ different startups over the past decade including many in the climate tech and energy industry.
Greentown Labs is North America's largest climatetech incubator. Foley Hoag has collaborated with Greentown since 2013 and was a founding partner of Greentown’s headquarters. In addition to working with Greentown as their corporate counsel and serving on the advisory board, we enjoy working closely with their emerging companies as mentors and partners.
NYSEIA, the only statewide membership and trade association dedicated solely to advancing solar energy use in New York State, strives to achieve significant, long-term and sustainable growth of solar energy throughout New York.
SeaAhead brings together entrepreneurs, investors, industry leaders and stakeholders in the blue economy, providing an open-innovation ecosystem that produces scalable commercial solutions to modern-day challenges.
ACE NY promotes the use of clean, renewable electricity technologies and energy efficiency in New York state to increase energy diversity and security, boost economic development, improve public health and reduce air pollution.
Awards & Accolades
Chambers USA 2026
Ranked as a leading law firm in Chambers USA 2026 in a variety of areas, including Energy, Enviroment, Impact Investing and Corporate/M&A.
Law Students for Climate Accountability
LSCA recognized Foley Hoag with the organization’s first-ever A+ score on its 2026 Law Firm Climate Change Scorecard.
The Legal 500
Recognized nationally in multiple practice areas including M&A: Middle-Market (sub-$500 million) and Venture Capital & Emerging Companies by The Legal 500 United States 2026
Best Lawyers
57 Foley Hoag lawyers were listed in the 2026 edition; 4 attorneys named "Lawyer of the Year" and 46 attorneys recognized as “Ones to Watch”
U.S. News - Best Lawyers
Recognized nationally for Land Use and Zoning Law, Litigation - Environmental, Corporate, Mergers & Acquisitions and Venture Capital law in the 2025 Best Lawyers “Best Law Firms” rankings; overall, Foley Hoag is ranked in 22 national & 40 regional categories
IFLR1000
One of only six Massachusetts law firms ranked in Tier 1 for M&A by IFLR1000 2021; shortlisted for Massachusetts Law Firm of the Year 2021
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