The Dairy Digester Enhancement program (Program) is part of Clean Energy Fund (CEF) 4,  funded from the 2019-21 biennial Capital Budget. This Program funds grants that enhance the viability of dairy digester projects, including bioenergy, improved energy efficiency, and advanced nutrient recovery systems that produce value-added biofertilizers, reduce trucking of lagoon water and improve soil health and air and water quality.

The application period is now closed

  • $970,000 was awarded through a competitive application process.
  • Commerce anticipates making 3-6 awards of $30,000 to $300,000.
  • Awards shall include at least one project east of the Cascades and one project west of the Cascades.
  • There is a minimum  1:1 match requirement of non-state funds, which could consist of applicant self-match, federal grants, private sponsorships or loans.

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CEF 4 Dairy Digester Enhancement Grant Program Reference Materials

Required Documents (to be attached, as instructed, to the email application submission)

Applicant Conference

Commerce held a Skype Applicant Conference on Dec. 6 to assist with the application process. Attendance was optional. 



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