Sierra Pacific Power 10-K/A 2007 FY Annual report (amended)

EXHIBIT 12 (B)

NEVADA POWER COMPANY
RATIOS OF EARNINGS TO FIXED CHARGES
(Dollars in Thousands)

	Year Ended December 31,
	2007			2006			2005			2004			2003
EARNINGS AS DEFINED:
Income (Loss) From Continuing Operations After Interest Charges	$	165,694		$	224,540		$	132,734		$	104,312		$	19,277
Income Taxes		78,352			117,510			63,995			56,572			(614	)
Income (Loss) From Continuing Operations before Income Taxes		244,046			342,050			196,729			160,884			18,663
Fixed Charges		190,836			190,333			159,776			145,055			195,342
Capitalized Interest (allowance for borrowed funds used during construction)		(13,196	)		(11,614	)		(23,187	)		(5,738	)		(2,700	)
Total	$	421,686		$	520,769		$	333,318		$	300,201		$	211,305
FIXED CHARGES AS DEFINED:
Interest Expensed and Capitalized(1)	$	190,836		$	190,333		$	159,776		$	145,055		$	195,342
Total	$	190,836		$	190,333		$	159,776		$	145,055		$	195,342
RATIO OF EARNINGS TO FIXED CHARGES		2.21			2.74			2.09			2.07			1.08

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

     For the purpose of calculating the ratios of earnings to fixed charges, “Fixed charges” represent the aggregate of interest charges on short-term and long-term debt (whether expensed or capitalized) and the portion of rental expense deemed attributable to interest. “Earnings” represents pre-tax income (or loss) from continuing operations before fixed charges (excluding capitalized interest).