Farm Digester Progress In Pennsylvania
Pennsylvania has 30 dairy digesters, including the one shown at Oregon Dairy, as well as around 5 swine digesters. About 10 of those have been installed since 2010.

Deputy Secretary of Agriculture Jay Howes and Center for Dairy Excellence Director John Frey share insights on farm digester trends in the Keystone State.
Nora Goldstein
BioCycle May 2013, Vol. 54, No. 5, p. 26

Farm Digester Industry In America
Figure 1. Anaerobic Digester Projects 2000-2011

Growth in facility installations is steady, but lack of capital and antiquated energy policies remain obstacles to realizing the broad suite of benefits that manure-based digester systems could achieve.

Allison Costa and Chris Voell
BioCycle February 2012, Vol. 53, No. 2, p. 38