Exhibit 12.01

SOUTHWEST GAS CORPORATION

COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

(Thousands of dollars)

	For the Twelve Months Ended
	Jun 30,		December 31,
	2012		2011		2010		2009		2008		2007
1. Fixed charges:
A) Interest expense	$	68,585	$	68,183	$	75,481	$	81,861	$	90,403	$	94,035
B) Amortization		2,043		2,137		2,620		2,097		2,880		2,783
C) Interest portion of rentals		10,207		8,943		6,455		6,644		7,802		7,952
Total fixed charges	$	80,835	$	79,263	$	84,556	$	90,602	$	101,085	$	104,770
2. Earnings (as defined):
D) Pretax income from continuing operations	$	179,734	$	175,066	$	158,378	$	132,035	$	101,808	$	131,024
Fixed Charges (1. above)		80,835		79,263		84,556		90,602		101,085		104,770
Total earnings as defined	$	260,569	$	254,329	$	242,934	$	222,637	$	202,893	$	235,794
		3.22		3.21		2.87		2.46		2.01		2.25