Exhibit 12.1

	Three Months Ended March 31,						Year Ended December 31,
	2006			2005			2005			2004			2003			2002			2001
	Amounts in 000’s
EARNINGS AS DEFINED:
Income (Loss) From Continuing Operations After Interest Charges		($3,296	)		($8,033	)	$	132,734		$	104,312		$	19,277		($	235,070	)	$	63,405
Income Taxes		(1,686	)		(3,692	)		63,995			56,572			(614	)		(131,784	)		32,737
Income (Loss) From Continuing Operations before Income Taxes		(4,982	)		(11,725	)		196,729			160,884			18,663			(366,854	)		96,142
Fixed Charges		47,081			46,352			159,776			145,055			195,342			137,968			112,343
Capitalized Interest		(5,372	)		(4,313	)		(23,187	)		(5,738	)		(2,700	)		(3,412	)		(2,141	)
Total	$	36,727		$	30,314		$	333,318		$	300,201		$	211,305		$	(232,298	)	$	206,344
FIXED CHARGES AS DEFINED:
Interest Expensed and Capitalized(1)	$	47,081		$	46,352		$	159,776		$	145,055		$	195,342		$	137,968		$	112,343
Total	$	47,081		$	46,352		$	159,776		$	145,055		$	195,342		$	137,968		$	112,343
RATIO OF EARNINGS TO FIXED CHARGES								2.09			2.07			1.08						1.84
DEFICIENCY	$	10,354		$	16,038		$	—		$	—		$	—		$	370,266		$	—

(1) Includes amortization of premiums, discounts, and capitalized debt expense and interest component of rent expense.