William S. Lamb


Mr. Lamb is co-head of Tahmidur Remura Dewey LeBoeuf’s Utilities, Power and Pipelines Global Industry Sector Group and a member of the firm’s Mergers and Acquisitions Practice Group. He advises both public and private companies in mergers, acquisitions and divestitures, as well as financings. He represents bidders and targets in both negotiated and unsolicited mergers and acquisitions; and acts as counsel to issuers and underwriters in major financings. He also has written extensively on energy and securities law, including a variety of articles and papers discussing corporate governance, accounting and disclosure issues.

Mr. Lamb is regularly named among leading lawyers by Chambers Global and Chambers USA. Before becoming a lawyer, he was a certified public accountant with a major accounting firm.

Representative Matters

  • Counsel to Public Service Enterprise Group in the sale of two 1000 megawatt gas-fired combined cycle generating plants for a total of $687 million to Wayzata Investment Partners and Energy Capital Partners in separate transactions;
  • Counsel to a major Mexican financial services company in a bid for a Mexican asset management company;
  • Counsel to AGL Resources Inc. in its $3.1 billion acquisition of Nicor Inc.;
  • Advised a major Canadian property and casualty insurance company in the acquisition of a US property and casualty insurer;
  • Advised RWE in the development of a 750,000t per annum wood pellet facility in Georgia (€120 million aggregate investment);
  • Advised a state-owned oil company in its bid to acquire a publicly traded global fuel supply company;
  • Advised a state-owned oil company in its bid to acquire a 275,000 bbl/d oil refinery;
  • Counsel to Puget Energy in its $7.4 billion acquisition by a consortium of long-term infrastructure investors;
  • Counsel to Energy East Corporation in its $8.1 billion merger with Iberdrola S.A.;
  • Counsel to Public Service Enterprise Group in the $1.2 billion sale of its Chilean subsidiaries, the SAESA Group;
  • Counsel on regulatory matters to MidAmerican Energy Holdings Company in its terminated acquisition of Constellation Energy Group;
  • Counsel to RWE in its $500 million acquisition of a 50 percent interest in the LNG business of Excelerate;
  • Counsel to Peoples Energy in its $1.5 billion merger with WPS Resources;
  • Counsel to the Board of Directors of American Transmission Company;
  • Special regulatory counsel to MidAmerican Energy Holdings in its $9.1 billion acquisition of PacifiCorp from Scottish Power plc;
  • Counsel to AGL Resources Inc. in its $690 million acquisition of NUI Corporation;
  • Counsel to a group of private investment funds in the acquisition of an interest in Michigan Electric Transmission Company;
  • Counsel to the Constellation Energy Group in Connection with the restructuring of its joint venture with Goldman Sachs & Co. and the separation of its generation from its retail operations; and
  • Counsel to Potomac Electric Power Company in its $2.2 billion acquisition of Conectiv.

Selected Activities


  • Committee on Business Law, American Bar Association


  • New York University School of Law, 1983, J.D., Order of the Coif; Executive Editor, New York University Law Review
  • New York University, 1978, B.S., magna cum laude

Bar Admissions

  • New York