GESS International – Anaerobic Digestion

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GESS International – Anaerobic Digestion

Clean and Reliable Energy for Your Business

About the Company:

GESS International – “GESS” – is an energy service company that offers solutions in the field of “green” energy and energy efficiency for the private sector, budgetary organizations, and business.

GESS specializes in energy efficiency, co-generation and renewable energy sources. The GESS team has been in the energy industry since 1997 with over 350 implemented projects worldwide.

About the Solution:

The main components GESS includes in their biogas facilities to insure stable functioning:

  • Metering technology to deliver the required amount of substrate
  • Efficient digest mixing system and stable production of gas at low energy consumption
  • Gas preparation for optimal energy conversion in CHPs
  • Equipment for hygienization according to the EU sanitary requirements
  • Stainless steel V2A (1.4301 / AISI 304) in systems containing a liquid substrate
  • Stainless steel V4A (1.4571 / AISI 316Ti) in systems containing gas

GESS International 3700 National Drive, Suite 100 Raleigh, NC USA (888) 662-4333 Visit Company Website

Solution Type

  • Anaerobic Digestion


  • Project Developer


  • Energy


  • GHG
  • Odor
  • Pathogens

To view additional information about this vendor, click below.

Solution Strengths, Weaknesses and Critical Indicators

Anaerobic Digestion:

  • Long usable life and can be run reliably
  • Creates energy and generates environmental credits
  • Proper feeding & system monitoring is required to avoid system downtime
  • Proven technology for odor control
  • Proven technology for GHG reduction
  • Proven technology for pathogen reduction
  • Different types of systems produce varying gas production rates
  • Requires proper preparation of the feedstock
  • Requires other technologies for energy utilization
  • Requires other technologies for digestate handling
  • Requires other technologies to prevent nitrogen loss
  • Complex systems may require expertise not available on-farm

Newtrient Comments/Opinions:

GESS is currently involved in eight biogas projects in North Carolina totaling 4,000,000 MMbtu's. GESS International has not been evaluated using Newtrient's 9-point scoring process because, although their process appears to be suited for use on dairy manure and they have expressed interested in working with the industry, Newtrient is not aware of any current dairy based projects.

Newtrient 9-Point Scoring Rating

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