Exhibit 12b

Tucson Electric Power Company
Computation of Ratio of Earnings to Fixed Charges

	3 Months Ended			12 Months Ended		12 Months Ended
	March 31,			March 31,		Dec. 31,			Dec. 31,		Dec. 31,			Dec. 31,			Dec. 31,
	2009			2009		2008			2007		2006			2005			2004
	- Thousands of Dollars -
Fixed Charges:
Interest on Long-Term Debt	$	9,191		$	44,935	$	47,456		$	50,230	$	51,422		$	56,243		$	69,904
Other Interest (1)		349			711		1,367			4,538		6,436			2,597			1,263
Interest on Capital Lease Obligations		13,963			56,886		57,252			64,477		72,556			79,064			85,869
Estimated Interest Portion of Rental Expense		25			122		130			160		188			216			243
Total Fixed Charges		23,528			102,654		106,205			119,405		130,602			138,120			157,279
Net Income (Loss)	$	(553	)	$	12,671	$	4,363		$	53,456	$	66,745		$	48,267		$	46,127
Less:
Cumulative Effect of Accounting Change - Net of Tax		—			—		—			—		—			(626	)		—
Net Income (Loss) from Continuing Operations		(553	)		12,671		4,363			53,456		66,745			48,893			46,127
Add (Deduct):
(Income) Losses from Equity Investees (2)		—			—		(1,381	)		—		(320	)		(314	)		(131	)
Income Taxes		(313	)		14,891		10,867			35,542		42,478			33,907			34,815
Total Fixed Charges		23,528			102,654		106,205			119,405		130,602			138,120			157,279
Total Earnings before Taxes and Fixed Charges		22,661			130,216	$	120,054		$	208,403	$	239,505		$	220,606		$	238,090
Ratio of Earnings to Fixed Charges		0.963			1.268		1.130			1.745		1.834			1.597			1.514
Dollar Amount of Shortfall	$	866

(1)	Excludes recognition of Allowance for Borrowed Funds Used During Construction.
(2)	Inncom International, Inc.(Income) Losses.