About Us


Mark Jenner is a biomass economist and owner of Biomass Rules. His vision for biomass economic opportunity is unparalleled. Jenner is passionate about pulling underutilized organics INTO the economy rather than isolating them as wastes. Biomass Rules, LLC combines principles of agronomy, engineering, livestock production, policy, and economics to conduct feasibility studies and biomass inventories.

Biomass Rules emerged as a vehicle for Jenner to do business as a consultant in value-adding biomass development projects.  This worked well until the economic downturn occurred in 2008.

In 2009, Jenner went on the road.  This included:

  • A 3-year tour  with the California Biomass Collaborative housed at the University of California, Davis in Davis, California.
  • 18 months in 2012, with the commodity forecasting group, World Agricultural Economics and Environmental Services.
  • a 3-year tour with University of Missouri Extension as a Regional Ag Business Specialist in Butler, Missouri in October of 2013.

Today Mark Jenner is the director of agribusiness and economics in the Briner School of Business at Greenville University in Greenville, IL.  As of August 2023, he has completed 7 years of teaching agribusiness and economics.  Year Three included an experiment as a dean of the business school.  Jenner and University leadership all agreed it was a worthy experiment, but building an agribusiness program was a better use of his out-of-the-box talents.

Biomass Rules is a creative part of this journey and biomassrules.com is coming out of storage.  The coronavirus adventure of 2020 has turned the bio-everything supply chain on its ear.  As Jenner prepares his students for the play-by-play of the bio (and non-bio) economy it makes sense to reenergize www.biomassrules.com.  Effectively the 2008/2009 recession brought an cessation of biomassules.com, so it is fitting that the new iteration of this site emerge from the 2020-2023 economic downturn.

Jenner has a PhD in production systems—ag econ (grazing research, 1996), two MS degrees in manure management (ag econ, 1992, ag mechanization, 1990), and a BS in agronomy (1980).

I am back.

…Buckle up.

Mark Jenner, 2-page biosketch

Mark Jenner, Academic CV