Markwest Energy Partners L P 10-Q 2015 Q3 Quarterly report

Exhibit 12.1

MarkWest Energy Partners, L.P.

Calculation of Ratio of Earnings to Fixed Charges

(Dollar amounts in thousands)

	2010			2011			2012			2013			2014			2015 (through September 30, 2015)
Total fixed charges	$	120,697		$	123,879		$	157,323		$	200,852		$	206,759		$	182,424
Earnings:
Earnings (loss) from continuing operations before income taxes	$	31,757		$	118,449		$	255,293		$	53,114		$	202,522		$	(45,013	)
Add:
Fixed charges	120,697			123,879			157,323			200,852			206,759			182,424
Amortization of capitalized interest	1,583			1,639			2,942			4,694			6,099			5,327
Cash distributions from equity method investments	8,448			4,382			8,416			6,370			12,459			46,485
Income (loss) from equity method investments	3,823			158			2,328			1,422			(4,477		)	11,473
Subtract:
Interest capitalized	(2,766		)	(1,121		)	(26,061		)	(35,053		)	(28,088		)	(20,465		)
Total earnings	$	163,542		$	247,386		$	400,241		$	231,399		$	395,274		$	180,231
Ratio	1.35			2.00			2.54			1.15			1.91			0.99		(1)

(1)Earnings were inadequate to cover fixed charges for the nine months ended September 30, 2015 by $2.2 million.