Exhibit 12

Williams Partners L.P.
Computation of Ratio of Earnings to Fixed Charges

	Years Ended December 31,
	2010			2009			2008			2007			2006
							(Millions)
Earnings:
Income before income taxes	$	1,103		$	1,040		$	1,156		$	1,318		$	940
Less: Equity earnings, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		(68	)		(55	)		(55	)		(51	)		(35	)
Income before income taxes and equity earnings		1,035			985			1,101			1,267			905
Add:
Fixed charges:
Interest accrued, including proportionate share from from 50% owned investees and unconsolidated majority-owned investees		393			260			252			226			146
Rental expense representative of interest factor		6			8			11			13			11
Total fixed charges		399			268			263			239			157
Distributed income of equity-method investees, excluding proportionate share from 50% owned investees and unconsolidated majority-owned investees		78			60			64			48			64
Less:
Capitalized interest		(29	)		(58	)		(43	)		(25	)		(11	)
Total earnings as adjusted	$	1,483		$	1,255		$	1,385		$	1,529		$	1,115
Fixed charges	$	399		$	268		$	263		$	239		$	157
Ratio of earnings to fixed charges		3.72			4.68			5.27			6.40			7.10