California Department of Food and Agriculture

Dairy Digester Research & Development Program

Dairy Digester Research & Development Program

Projects selected for DDRDP 2014-15 (Digester Development) updated

DDRDP 2014-15 Research Project selected for award

CDFA's Dairy Digester Research and Development Program (DDRDP) provides financial assistance for the installation of dairy digesters in California, which will result in reduced greenhouse gas emissions. The program is guided by the Statement of Principles (PDF) of the California-Federal Dairy Digester Working Group. The Working Group is a partnership of state, federal and local agencies with the common goal of identifying and removing barriers to the wide adoption of dairy digester systems in California.

About the Program

Dairy digesters are a renewable technology that uses livestock manure to produce methane, which is a renewable source of electrical energy generation and transportation fuel. The technology has many environmental and social benefits. More information on dairy digesters can be found on the CalEPA Dairy Digesters webpage and the USEPA AgSTAR Anaerobic Digestion webpage.

Download the Dairy Digester Research & Development Program Fact Sheet to learn more (PDF)


What's New?

Press Releases

DDRDP in the News


Growing California video series: Cow Power

New Hope Dairy like other California dairies is quickly pioneering a new method to convert cow manure into methane gas using anaerobic digester plants.

Contact Us

If you have questions about CDFA’s dairy digester and dairy methane reduction programs, please send an e-mail to