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GOLD Certified Iowa Green Brewery

Peace Tree Brewing Company in Knoxville became the fifth GOLD Certified Iowa Green Brewery in October of 2019. With their focus on Energy Efficiency and Resource Management through local sourcing, Peace Tree has become an industry leader and advocate for sustainable brewing practices in the State of Iowa.

A unique feature of Peace Tree’s Knoxville brewery location is the custom hot air exchange system, developed and built by head brewer Joe Kesteloot.  This system was designed to capture ambient heat emanating from brewing equipment while redistributing that air to heat the taproom, saving on energy consumption and costs. This system is unique to Peace Tree and something not-before seen at a certified brewery.

Owner Megan McKay and the team at Peace Tree also place a heavy focus on sourcing local ingredients and supporting local businesses.  Cornucopia!, a yearly release farmhouse ale produced by the brewery features sweet corn sourced from a local Iowa Farm. Most recently, Peace Tree has focused on switching their bottle supplier to a regional company headquartered in the Midwest which supports a larger mission that cuts energy, transportation costs, and promotes environmental sustainability.

Peace Tree Brewing Company is one of more than thirty breweries now certified by the Iowa Green Brewery Certification Program.  Their commitment to sustainability helps further the green beer community in the State of Iowa!


Becoming a Certified Green Brewery

  1. Submit the brewery audit request form (located on the left)
  2. IWRC staff will visit your brewery to assess your environmental impact and document your sustainability achievements
  3. Breweries are scored on a points-based system and recommendations to increase scoring and reduce environmental impact are provided in a customized report
  4. The IWRC will provide direct assistance, upon request, to help implement recommendations provided in the customized report 
  5. Once your brewery is satisfied with your level of certification (Bronze, Silver, Gold, Platinum), the IWRC will present your brewery with a framed certificate and window decals recognizing your achievement

Resources for Brewers

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