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Unrivaled knowledge in regulatory matters. About Our Firm At Keegan Werlin LLP, we specialize in developing creative solutions to the complex challenges our clients encounter in their business environments. Keegan Werlin attorneys are industry leaders in matters regarding energy and regulatory issues, project siting, licensing and permitting, environmental compliance and permitting, land use, government and legislative relations, municipal law and real estate. From start to finish, Keegan Werlin has unrivaled experience and knowledge of energy-related regulatory and policy matters and the project-development and permitting landscape. ​ Our goal is to provide clients with successful results through commitment to client objectives, expertise and responsiveness. We take pride in our ability to understand our client businesses, the environment in which they operate and their priorities for achieving success. We commit to client objectives at all stages of representation and know that there is no success without client success. ​ If you would like to discuss a matter of interest, please contact us today.

Practical advice from a knowledgeable and dedicated legal team. We take great pride in our ability to understand our client businesses, the environments in which they operate and their priorities for achieving success. We commit to client objectives at all stages of representation and know that, ultimately, there is no success without client success. If you would like to discuss a matter of interest, please contact us today. About Our Firm At Keegan Werlin LLP, we specialize in developing creative solutions to the complex challenges our clients encounter in their business environments. Keegan Werlin attorneys are industry leaders in energy and regulatory issues, project siting, licensing and permitting, environmental compliance and permitting, land use, government and legislative relations, municipal law and real estate. From start to finish, Keegan Werlin has unrivaled experience and knowledge of energy-related regulatory and policy matters and the project-development and permitting landscape. Experience & Expertise Keegan Werlin has a team of attorneys with unparalleled experience dealing with complex energy, real estate and regulatory issues. The firm combines its legal and regulatory expertise with a thorough understanding of the technical, strategic and financial challenges in emerging industries to provide successful and cost-effective representation of client interests. Learn More Practice Areas Energy & Regulatory Law Read more Energy Facilities Siting & Permitting Read more Real Estate Development & Permitting Read more Governmental & Legislative Relations Read more Environmental, Municipal & Land Use Read more Partnerships

Our Team Practical advice from a knowledgeable legal team. Cheryl M. Kimball Managing Partner & Chair of Energy & Regulatory Practice Read More David S. Rosenzweig Executive Partner & Chair of Energy Facilities Siting & Permitting Practice Read More Brian Golden Partner and Chair of Real Estate Development and Permitting Practice Read More Robert J. Keegan Chairman Emeritus ​ ​ Read More Molly K. Agostinelli Associate Read More Jonathan A. Goldberg Senior Counsel Read More Michael B. Hershberg Associate Read More Ashley S. Marton Associate Read More Anna Rendell-Baker Associate Read More Danielle Winter Partner Read More Cheryl A. Blaine Partner Read More Kerri A. Gowaski Associate Read More Robert J. Humm Partner Read More Sean P. Nehill Senior Counsel Read More Tiffany N. Tisler Associate Read More Barry P. Fogel Partner Read More John K. Habib Partner Read More Catherine J. Keuthen Partner Read More Kevin F. Penders Partner | Practice Manager Read More Brendan P. Vaughan Associate Read More Steven Frias Associate Read More Erika J. Hafner Partner Read More Michael J. Koehler Partner Read More Jessica Ralston Partner Read More Daniel P. Venora Partner Read More Practice Areas Energy & Regulatory Law Energy Facilities Siting & Permitting Governmental & Legislative Relations Environmental, Municipal, & Land Use Real Estate Development & Permitting Learn More

Energy & Administrative Law; Public Utilities Ms. Tisler advises public utilities on legal and regulatory issues related to energy procurements, renewable energy, grid modernization, energy efficiency, and rate cases. Tiffany N. Tisler Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: ttisler@keeganwerlin.com ● Administrative Law ● Energy Law ● Public Utilities Bar Admissions Connecticut U.S. District Court of Connecticut Prior to joining the firm, Ms. Tisler worked as a Staff Attorney at the Connecticut Public Utilities Regulatory Authority, advising on proceedings related to renewable energy, electric vehicles, energy affordability, reliability and resilience, grid modernization, rate adjustments, annual reconciliations, revenue requirements, company restructuring, and investigations. Ms. Tisler completed a Certificate in Financing and Deploying Clean Energy from Yale University. Ms. Tisler also has experience in civil litigation and court operations. Ms. Tisler received her Juris Doctor from The University of Toledo College of Law with a Certificate in Environmental Law. While in law school, Ms. Tisler participated in Moot Court and was the Assistant Managing Editor of The University of Toledo Law Review. Ms. Tisler authored and co-authored two environmental law articles published in The University of Toledo Law Review. Ms. Tisler received her Bachelor of Arts in political science, zoology, and environmental science from Miami University in Oxford, Ohio. In addition to her professional accomplishments, Ms. Tisler maintains an interest in international travel and experiences after living and working abroad for several years. Education Yale University, Certificate in Financing and Deploying Clean Energy, 2022 The University of Toledo College of Law, J.D., 2011, cum laude Miami University, B.A. in Political Science, Zoology, and Environmental Science, 2008, magna cum laude

Public Utility, Energy, & Administrative Law; Government Relations As the recent former General Counsel to the Massachusetts Department of Public Utilities (DPU), Mr. Goldberg served as the chief legal and policy advisor for regulating the Commonwealth's invested-owned electric distribution, natural gas, water and steam companies, and oversight of rail transit safety for rail crossings and regional transportation entities, such as the Massachusetts Bay Transportation Authority, as well as transportation network companies and other common carriers, including buses, movers, and towing companies. Jonathan A. Goldberg Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: jgoldberg@keeganwerlin.com ● Energy Law ● Public Utilities ● Administrative Law ● Government Relations Bar Admissions Massachusetts During his tenure as General Counsel and manager of the DPU's legal division, the DPU issued over 1,500 orders on energy related matters, including complex rate designs, performance-based rate plans, mergers and acquisitions, as well as initiatives to encourage grid modernization for the electric industry, including solar, energy storage and electric vehicle charging infrastructure, initiatives to encourage development of networked geothermal systems, and initiatives to encourage energy optimization through energy efficiency, electrification, and demand response programs. Mr. Goldberg worked with the DPU's Commission to develop innovative capital investment cost recovery frameworks to mitigate barriers to distributed renewable energy development, to integrate environmental justice principles into the DPU's procedural and decision-making processes, and to initiate the process to reform the Commonwealth's approach to regulating natural gas distribution companies while the Commonwealth pursues lower greenhouse gas emissions. Mr. Goldberg provides clients an in-depth knowledge regarding the regulation of electric, natural gas and water distribution companies. ​ Prior to joining the firm in 2023 and his tenure as General Counsel at DPU, Mr. Goldberg was an attorney in the Energy Practice Group at Rich May, P.C. from 2015 through 2020. Mr. Goldberg previously served as a hearing officer at the DPU and counsel for the House Committee on Global Warming and Climate Change. Education Baylor Law School, Waco, Texas, J.D., 2009 ​ Northeastern University, Boston, Massachusetts, B.S. Criminal Justice, 2006

Governmental & Legislative Relations Overview Keegan Werlin provides a wide range of advocacy services to clients in legislative, state and municipal agency matters. Our attorneys advise clients on Massachusetts laws that regulate business and industry; lobbying, ethics, and campaign finance; government procurement; and the promulgation of regulations. Keegan Werlin possesses extensive experience representing clients in diverse projects requiring federal, state and local representation and advocacy. Our attorneys’ experiences working with members of the Massachusetts Legislature and serving in the Commonwealth’s executive branch has allowed our governmental relations professionals to develop key contacts throughout Massachusetts. State and Legislative Advocacy Keegan Werlin’s legislative practice is tailored to meet the particular needs of the individual client. Among the attorneys at the firm, two attorneys are registered lobbyists with significant experience advocating on behalf of client interests in advancing ideas, goals and objectives into legislation. Additionally, our attorneys assist clients with developing outreach plans to achieve success before various state agencies as they propose regulatory actions that affect their interests. As legislative advocates, Keegan Werlin works with our clients to develop and implement strategic plans to influence legislative initiatives of interest to a particular client. We coordinate outreach to key legislators, organizations and associations to secure a broad base of support. Our legislative tracking and monitoring services can also provide clients with invaluable “eyes and ears” at the State House. Municipal Advocacy At the local level, KW’s attorneys have extensive knowledge from working with municipal officials on project-related issues and local permitting. Skilled in all facets of municipal representation, KW’s attorneys have appeared before more than 50 communities across the Commonwealth on a wide range of client issues.

Energy Law & Public Utilities Michael B. Hershberg is an associate at Keegan Werlin LLP, where he specializes in energy, regulatory, and public utility law. He represents the firm’s utility clients before the Department of Public Utilities. Michael B. Hershberg Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: mhershberg@keeganwerlin.com ● Energy Law ● Public Utilities Bar Admissions Massachusetts Connecticut New Hampshire Mr. Hershberg received his Juris Doctor from Vermont Law School, where he served on the Student Bar Association as a Senator focusing his efforts to bridge the gap between the Vermont Law School student body and the Town of South Royalton. During his time in law school, he also worked as a Student Clinician at the South Royalton Legal Clinic supporting lower income communities in civil disputes and Asylees in Immigration matters, interned for the Irish International Immigrant Center in Boston, and worked for the Suffolk County District Attorney’s Office in Chelsea. ​ Mr. Hershberg received his Bachelor of Arts in political science from Stonehill College in Easton. At Stonehill, he was a member of the Pi Sigma Alpha National Political Science Honor Society. ​ He brings a wide berth of experience to the firm; Mr. Hershberg previously worked on Transmission Right of Way matters at Georgia Power Company and most recently as a project manager for Volta Charging, an Electric Vehicle charging infrastructure start-up where he worked closely with municipalities and appeared before municipal boards to expand access to public charging. ​ In addition to his work at the firm, he serves on both the Zoning Board of Appeals and the Earth Removal Board in the Town of Sudbury. Education Stonehill College, Easton, Massachusetts B.A., 2013 Vermont Law School, South Royalton, Vermont, J.D., 2016

Energy and Regulatory Law, Litigation, Administrative & Public Utilities Robert J. Humm is a partner at Keegan Werlin LLP, focusing on energy, regulatory, and public utility law. He represents a number of gas and electric utilities in state regulatory and administrative proceedings in Rhode Island, Massachusetts, and Connecticut. Robert J. Humm Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: rhumm@keeganwerlin.com ● Energy & Regulatory Law ● Public Utilities ● Administrative Law ● Litigation Bar Admissions Rhode Island Massachusetts Connecticut U.S. First Circuit of Appeals U.S. District Court, District of Rhode Island U.S. District Court, District of Massachusetts U.S. District Court, District of Connecticut Mr. Humm advises energy and public utility companies on legal, regulatory, commercial, and legislative matters to support their objectives and ensure compliance. His representation includes advocacy and strategic guidance on issues related to distribution rates, planning and system reliability, infrastructure replacement, capital and operational expenses, energy supply, service quality, safety, compliance, mergers and acquisitions, and state investigations. In addition, his background as a litigation attorney allows him to assist clients with court appeals from administrative agency decisions. Before joining Keegan Werlin, Mr. Humm served as Senior Counsel at National Grid in its New England Legal Regulatory Group, and as the Assistant General Counsel – Litigation at Blue Cross & Blue Shield of Rhode Island, where he represented the company in federal and state administrative proceedings, among other responsibilities. Mr. Humm began his career as a litigation attorney at Adler Pollock & Sheehan P.C. Roger Williams University School of Law, J.D., 2008 Brown University, B.A., Modern American History, 2004 Memberships & Associations Town Council, Town of Barrington, Rhode Island – Vice President Leadership Rhode Island – Member. Friends of Brown Basketball – Executive Board Member. Education Recognitions Rhode Island Super Lawyers, “Rising Star,” 2014, 2015, 2016 Roger Williams University School of Law Alumni Association - President (2012-14). ​ Roger Williams University School of Law Alumni Board of Directors - Board Member (2009-16). ​ Roger Williams University School of Law Board of Directors - Ex Officio Member (2012-14).

Public Utility, Energy, and Administrative Law; Government Relations & Lobbying John K. Habib (Jack) is a partner in Keegan Werlin LLP's energy and regulatory and governmental relations practices, specializing in clean energy and public utility law, as well as governmental advocacy. He represents a number of electric and gas utilities in Massachusetts and Rhode Island on issues concerning clean energy, interconnection, rates, energy efficiency, and energy procurement. John K. Habib Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: jhabib@keeganwerlin.com ● Public Utility Law ● Energy Law ● Administrative Law ● Government Relations & Lobbying Bar Admissions Rhode Island Massachusetts New Hampshire Mr. Habib has represented electric utilities in proceedings before the Massachusetts Department of Public Utilities regarding the Massachusetts 2021 Climate Act, the 2008 Green Communities Act and related laws, including proceedings governing the procurement of long-term clean energy, utility and third-party storage, solar incentives, smart grid investments, energy efficiency and the interconnection of distributed generation. He has also represented electric utilities in Massachusetts and Rhode Island supporting groundbreaking programs to promote the adoption of electric vehicles through the expansion of electric vehicle charging infrastructure. Mr. Habib has represented gas utilities in proceedings before the MA D.P.U. regarding gas system enhancement plans, gas procurement and related issues. Most recently, Mr. Habib has represented the Massachusetts gas utilities, Mr. Habib has represented the Massachusetts gas utilities in D.P.U. 20-80, addressing the gas utilities' net zero enablement plans to meet the Commonwealth's 2050 greenhouse gas reduction targets. ​ Mr. Habib has also represented electric utilities in proceedings relating to the implementation of the Massachusetts Electric Restructuring Act of 1997, including proceedings governing the divestiture of generation facilities and purchase power agreements, implementation of default service policy and service quality. ​ Mr. Habib has also represented clients in appellate proceedings before the Massachusetts Supreme Judicial Court on issues concerning administrative and regulatory law. Before joining Keegan Werlin in 1998, Mr. Habib was an attorney at the Massachusetts Department of Public Utilities. He was also General Counsel to Massachusetts State Senator John D. O'Brien from 1993 to 1997, during which time he authored legislation on behalf of the Joint Special Committee on Electric Utility Restructuring. Representative Cases Massachusetts Electric Company and Nantucket Electric Company, D.P.U. 18-77 (2019) ​ The Narragansett Electric Company, RI Dkt. 4929 (2019) ​ Massachusetts Electric Company and Nantucket Electric Company, D.P.U. 17-117 (2018) ​ NSTAR Electric Company, D.P.U. 16-105 (2016) ​ Massachusetts Electric Company and Nantucket Electric Company, D.P.U. 14-01 (2014) ​ Boston Gas Company and Colonial Gas Company, D.P.U. 13-157 (2013) ​ NSTAR Electric Company, D.P.U. 12-110 (2013) Members and Associations Massachusetts Bar Association Boston Bar Association Education Boston University School of Law, Boston, Massachusetts, J.D., 1993 Boston College, Boston, Massachusetts, B.S. Political Science, magna cum laude, 1990 Awards: Dean's List

Administrative, Energy & Regulatory Law; Public Utilities; Government Relations & Lobbying Kevin Penders serves as a Partner and the Practice Manager for Keegan Werlin’s Energy & Regulatory Practice. Mr. Penders focuses on energy, regulatory, public utility law and governmental relations for utility clients, and represents electric and gas utilities before public utility commissions on issues associated with rates, forecast and supply planning, corporate financing, energy procurement and contracting, pipeline safety, and energy efficiency. Kevin F. Penders Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: kpenders@keeganwerlin.com ● Administrative Law ● Energy & Regulatory Law ● Public Utilities ● Government Relations & Lobbying Bar Admissions Massachusetts U.S. Supreme Court As the former General Counsel to the Massachusetts Department of Public Utilities (DPU), Mr. Penders served as the chief legal and policy advisor for regulating the Commonwealth’s investor-owned electric distribution, natural gas and water companies, handled complex rate design and base rate cases, and helped to write the playbook for future regional energy solutions. Under his management, the DPU’s legal division issued over 2,000 orders on a wide range of energy issues, including traditional rate recovery obligations, initiatives to encourage grid modernization for the electric industry, including solar, battery storage and electric vehicle deployment, initiatives to quantify and reduce gas leaks in the Commonwealth, and initiatives to ensure energy efficient and renewable energy deployment to meet the Commonwealth’s clean energy and climate goals. He provides clients an in-depth knowledge regarding the regulation of electric power, natural gas and water companies, and was part of the team that created the regulatory oversight of the Transportation Network Company industry. ​ Prior to rejoining the firm in 2021, Mr. Penders served as a policy advisor with Preti Strategies, providing business, political and strategic advice to clients on public policy and energy law issues, and of counsel in the Energy Practice Group of its affiliated law firm, Preti, Flaherty, Beliveau & Pachios. Mr. Penders was an attorney with Keegan Werlin from 2006 through 2015, and has previously held positions within the energy industry and in government, at National Grid, the former New England Gas Company, the DPU, the House Committee on Taxation, and the Senate Committee on Post-Audit and Oversight. ​ Kevin lives in Foxborough, MA with his wife, three kids, two rescue dogs and a domesticated corn snake. Memberships & Associations Boyden Library Board of Trustees, Foxborough, MA, 2011 to present Board of Directors, NexDine Foundation, 2018 to present Zoning Board of Appeals, Town of Foxborough, MA, 2010 to 2015 Adjunct Professor, “Legislation”, New England Law Boston, 2003 to 2013 New England School of Law, J.D., 1996 College of the Holy Cross, B.A., Political Science, 1993 St. John’s Preparatory High School, 1989 Lecturer, Business Law & Ethics, Boston University School of Management, 2008 Visiting Professor, Tufts University Experimental College, 2000 to 2004 Lucius Beebe Library Board of Trustees, Wakefield, MA, 1994 to 2001 Recognitions Massachusetts’ Super Lawyers, 2013, 2014 Education

Environmental, Municipal, & Land Use Overview Keegan Werlin provides clients with the highest quality legal representation and services in the area of environmental, municipal and land use law. The strength of the firm’s practice in these areas is drawn from the extensive experience that our attorneys have with a broad scope of regulatory programs in both government and private practice. In addition to corporations of all sizes, sole proprietorships and individuals, our clients include boards and departments of municipal corporations as they plan and construct major public infrastructure projects. Regulatory Permitting and Land Use Our regulatory permitting and land use practice focuses on regulatory permitting for the construction and operation of a wide array of projects. Keegan Werlin works closely with clients and their technical consultants to obtain timely permit approvals from federal, state and local agencies for electric transmission facilities; natural gas pipelines and storage facilities; water and sewer projects; solid waste management facilities; industrial, manufacturing and commercial facilities; and hotel and residential projects of all sizes. Our attorneys are among the region’s leading authorities on regulations and policies currently being used in Massachusetts to implement permit-related programs such as the National Environmental Policy Act and the Massachusetts Environmental Policy Act; the Clean Air Act (state and federal); the Solid Waste Management Act; the Clean Water Act; the Wetlands Protection Act; and the Rivers Protection Act. The firm also guides clients through land use permitting at the local level including zoning, site plan review, subdivision planning and approval, and compliance with public health and wetlands performance standards. As special municipal counsel, we have worked closely with the departments of several cities and towns to obtain necessary permits and approvals for large-scale projects such as landfill closures and post-closure development projects; water and sewer projects; and electric generating facility projects.

Energy, Environmental, Administrative, Municipal; Land Use & Zoning Cheryl A. Blaine is a partner at Keegan Werlin LLP and has been a member of the Firm’s Energy Facilities Siting & Permitting Practice and the Environmental, Municipal and Land Use Practice since 1997. Cheryl A. Blaine Boston Office Phone: 617-951-1400 Fax: 617-951-1354 Email: cblaine@keeganwerlin.com ● Environmental Law ● Energy Law ● Administrative Law ● Land Use & Zoning ● Municipal Law Bar Admissions Massachusetts U.S. District Court District of MA Ms. Blaine’s practice includes representation of energy and utility clients before the Department of Public Utilities and the Energy Facilities Siting Board in permitting energy facilities including natural gas generating and peaking facilities, renewable energy projects, natural gas pipelines, electric transmission lines, substations, and ancillary equipment. She also has assisted individuals, corporations and municipalities in project development and has significant experience in land use and environmental permitting, real estate transactions involving contaminated properties, and litigation, adjudication, negotiation, enforcement, and defense involving environmental and land use issues. Ms. Blaine received her Juris Doctor, cum laude, from Suffolk University Law School in 1993 and completed her Bachelor of Science degree from Northeastern University in 1981. Before attending law school, Ms. Blaine was an analytical chemist and environmental consultant providing technical and quality-control/quality-assurance support to the United States Environmental Protection Agency in connection with New England Superfund Sites. Ms. Blaine is admitted to practice before the bars of Massachusetts and the United States District Court. She is a member of the Massachusetts Bar Association's Property Law and Public Law sections, the Real Estate Bar Association and the Women's Bar Association. Ms. Blaine has co-authored the following articles: “Alteration of Nonconforming Structures and Uses Under the Zoning Act: Is there a Difference Between Lawful and Unlawful?” co-author with Barry P. Fogel and H. Theodore Cohen, Massachusetts Bar Association Section Review, summer 2002. “Standing in Wetland Appeals: How Recent Developments Alter the Right to Challenge State and Local Decisions” co-author with Barry P. Fogel, Massachusetts Bar Association Section Review, fall 2005. Memberships and Associations Massachusetts Bar Association Massachusetts Real Estate Bar Association Massachusetts Women's Bar Association Education Suffolk University Law School, Boston, Massachusetts, J.D., cum laude, 1993 ​ Northeastern University, Boston, Massachusetts, B.S. Biology, 1981