$XEL SEC Filings

Filing Filed On
PRELIMINARY PROXY STATEMENT 16 Mar 2012
PRELIMINARY PROXY STATEMENT 21 Mar 2011
PRE 14A 12 Mar 2008
PRELIMINARY PROXY STATEMENT 27 Feb 2004
PRE 14A 29 Jan 1999
PRE 14A 18 Feb 1998
PRE 14A 24 Apr 1997