MarkWest Energy Partners Increases Quarterly Cash Distribution by 3% to $0.67

MarkWest Energy Partners, L.P.

today announced that the Board of Directors of the General Partner of MarkWest Energy Partners, L.P., declared a cash distribution of $0.67 per common unit for the first quarter of 2011, for an implied annual rate of $2.68 per common unit. The first quarter 2011 distribution represents an increase of $0.02 per common unit, or 3 percent, over the fourth quarter 2010 distribution and an increase of $0.03 per common unit, or 5 percent, over the first quarter 2010 distribution.