EXHIBIT 1.1 NIAGARA MOHAWK POWER CORPORATION SENIOR DEBT SECURITIES UNDERWRITING AGREEMENT New York, New York May 9, 2000 To the Representative named in Schedule I hereto of the Underwriters named in Schedule II hereto Dear Ladies and Gentlemen:...Senior Debt Securities Underwriting Agreement • May 30th, 2000 • Niagara Mohawk Power Corp /Ny/ • Electric & other services combined • New York
