EXHIBIT 12

AVISTA CORPORATION

Computation of Ratio of Earnings to Fixed Charges

Consolidated

(Thousands of Dollars)

	Nine months ended September 30,			Years Ended December 31
	2012			2011			2010			2009			2008			2007
Fixed charges, as defined:
Interest charges	$	54,990		$	69,591		$	72,010		$	61,361		$	74,914		$	80,095
Amortization of debt expense and premium - net		2,876			4,617			4,414			5,673			4,673			6,345
Interest portion of rentals		1,709			2,154			2,027			1,874			1,601			1,612
Total fixed charges	$	59,575		$	76,362		$	78,451		$	68,908		$	81,188		$	88,052
Earnings, as defined:
Pre-tax income from continuing operations	$	95,813		$	160,171		$	146,105		$	134,971		$	120,382		$	63,061
Add (deduct):
Capitalized interest		(1,765	)		(2,942	)		(298	)		(545	)		(4,612	)		(3,864	)
Total fixed charges above		59,575			76,362			78,451			68,908			81,188			88,052
Total earnings	$	153,623		$	233,591		$	224,258		$	203,334		$	196,958		$	147,249
Ratio of earnings to fixed charges		2.58			3.06			2.86			2.95			2.43			1.67