Exhibit 12(a)

UniSource Energy Corporation
Computation of Ratio of Earnings to Fixed Charges

      

	12 Months Ended
		Dec. 31,			Dec. 31,			Dec. 31,		Dec. 31,		Dec. 31,
		2005			2004			2003		2002		2001
	- Thousands of Dollars -
Fixed Charges:
Interest on Long-Term Debt	$	76,762		$	80,968		$	80,844	$	65,620	$	68,678
Other Interest (1)		3,153			1,947			3,709		2,123		1,287
Interest on Capital Lease Obligations		79,098			85,912			84,080		87,801		90,559
Total Fixed Charges		159,013			168,827			168,633		155,544		160,524
Net Income		46,144			45,919			113,941		34,928		63,839
Less:
Extraordinary Income & Accounting Change -
Net of Tax		(626	)		-			67,471		-		470
Net Income from Continuing Operations		46,770			45,919			46,470		34,928		63,369
Add (Deduct):
(Income) Losses from Equity Investees		(2,113	)		(7,121	)		3,051		3,047		10,748
Income Taxes		32,560			33,946			12,082		17,962		49,109
Total Fixed Charges		159,013			168,827			168,633		155,544		160,524
Total Earnings before Taxes
and Fixed Charges	$	236,230		$	241,571		$	230,236	$	211,481	$	283,750
Ratio of Earnings to Fixed Charges		1.486			1.431			1.365		1.360		1.768

(1) Excludes recognition of Allowance for Borrowed Funds Used During Construction.