Timothy P. Callahan Partner

Clients look to Tim for his significant project finance, development and M&A experience. He is a leading advisor to owners, developers, sponsors, lenders, manufacturers and contractors in all facets of the development, financing, acquisition and disposition of energy and other infrastructure facilities.

His comprehensive projects experience includes advising clients in connection with renewable energy facilities, gas and coal fired power plants, and gas and water pipelines. Tim has closed deals in connection with wind farms, solar plants and other renewable facilities aggregating well over 15,000 MWs, including representing both lenders and sponsors in complex financings, as well as owners in the development, sale and purchase of such facilities.

In addition to his energy practice, Tim counsels clients in a variety of public-private partnerships, including water and wastewater facilities, municipal facilities, convention centers, and stadiums.

Prior to joining McGuireWoods, Tim served as the global chair of the Wind Energy Practice at another Am Law 100 law firm. He frequently speaks and writes on alternative energy.


Representation of clients in connection with projects related to power plants fired by gas, coal and petroleum coke, coal gasification plants (including IGCC and SNG projects), renewable energy facilities, gas and water pipelines, sports stadiums, water and wastewater plants, oil refineries, and pulp & paper mills. Advice includes structuring, negotiating, drafting and administering:

Project financings, including equipment, construction, permanent, acquisition and tax-equity financings;

Joint venture, equity and partnership arrangements, including co-development and joint development agreements;

Asset/stock sale & purchase agreements, as well as the associated term sheets and letters of intent;

Complex engineering, procurement and construction agreements (including EPC, BOP, DBOM & BOT structures), equipment sale and purchase agreements (including TSA, WMSA and “frame” agreements), and operation & maintenance agreements;

Power purchase agreements and other off-take arrangements, fuel supply and feedstock agreements, and tolling agreements; and

Other project documents, such as electric interconnection and transmission service agreements, real estate leases/easements, and licenses.

Advise clients in connection with the negotiation and documentation of complex privatization and public-private partnership arrangements, including those related to convention centers, sports stadiums, hotels, water and wastewater facilities, water pipelines, solid waste transfer stations, tourism venues, and other municipal facilities (including the structuring of tax-exempt municipal bond financing related to privatization).

Advise clients in the structuring and negotiation of outsourcing transactions relevant to the provision of electricity, steam, water, wastewater and other utility services, including energy management outsourcing arrangements.

Advises on Production Tax Credits, Investment Tax Credits, and Renewable Portfolio Standards and related programs.

  • University of Michigan Law School, JD, 1988
  • University of Michigan, BA, High Distinction, 1985

Member, Ecotech Institute Advisory Board

Member, Law360 Energy Editorial Advisory Board, 2011-2012

Past President and Board Chairman, Hinsdale Central Football Club

  • Speaker, "Overview of the United States Wind Power Market," Korea Eximbank Conference, Seoul, South Korea, 2011
  • Moderator, "Strategic Wind Developers’ Perspective on Wind Development," Wind Power Finance & Investment Summit 2009, San Diego, CA, 2009
  • Speaker, "Wind Turbine Procurement: What Do Manufacturers Provide & What Are Emerging Trends?," Power-Gen Renewable Energy & Fuels, Las Vegas, NV, 2008
  • Speaker, "Challenges and Complexities of Foreign Ownership," American Wind Energy Association, Windpower 2008, Houston, TX, 2008
  • Moderator, "Strategic Wind Developers’ Perspective on Wind Development," Wind Power Finance & Investment Summit 2008, San Diego, CA, 2008
  • Moderator, "Developments in the Wind Turbine Market for 2007 & Beyond," Wind Power Finance & Investment Summit 2007, San Diego, CA, 2007
  • Illinois

Selected for inclusion in The Best Lawyers in America, Construction Law, Woodward/White, Inc., 2008-2023

Selected for inclusion in “Legal 500 United States,” Energy: Renewable/Alternative Power; Project Finance, 2021, 2022

Selected for inclusion in America’s Leading Lawyers for Business, Projects: Renewable and Alternative Energy, Nationwide, Chambers USA, 2019-2022

Selected for inclusion in America’s Leading Lawyers for Business, Projects, Nationwide, Chambers USA, 2006-2022

Named to "M&A Client Service All-Stars," BTI Consulting, 2021

Selected for inclusion as a "Leading Lawyer" in Projects, Chambers Global, 2006-2020

Selected for inclusion as a "Leading Lawyer," Energy Renewable/Alternative; Project Finance: Advice To Lenders; Energy Transactions: Conventional Power, Legal 500 US, 2017-2019

Named as a “Top Rated Lawyer” in Energy, Environmental, and Natural Resource Law, The American Lawyer, 2012-2016

Named to “Illinois Super Lawyers,” Energy & Resources, Super Lawyers, Thomas Reuters, 2009-2012

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