Exhibit 4.6 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT is made and entered into as of February 14, 2003 by and between Sierra Pacific Resources, a Nevada corporation (the "Company"), and Merrill Lynch & Co., Merrill Lynch,...Registration Rights Agreement • May 7th, 2003 • Sierra Pacific Resources /Nv/ • Electric & other services combined • New York
Exhibit 1.1 SIERRA PACIFIC RESOURCES (a Nevada corporation) 7.25% Convertible Notes due 2010 PURCHASE AGREEMENT Dated: February 11, 2003 TABLE OF CONTENTSSierra Pacific Resources /Nv/ • May 7th, 2003 • Electric & other services combined • New York
