CreChar Case Study – Site A

Site A is a farm-based AD plant using predominantly farm and distillery wastes as well as some energy crop. The site has 2 tanks in series with a total volume of 7000 m3 and generates 1.1MWe via 2 CHP engines.
Case Study A Image Crechar for AD
The owner was looking for solutions to reduce expensive feedstock input whilst maintaining energy output.

This is a well-run site with comprehensive data recording and analysis. The owner is experienced and innovative focusing not only on maximising revenues but also on the wider impact on the environment.

Our approach

We run our large-scale operations, following a proven process to maximise the outputs and collect data relevant for performance monitoring. We require minimum input from the operator at the same time offering our expert advice to add further value.

The Carbogenics team assess the sites operational and chemical data filling in any gaps where necessary.

CreChar is supplied in 25 kg digestible bags which are added to the solid feed hopper daily, resulting in no disruption to normal plant operation.

Case Study A Graph

The graph shows the methane yield from the site over the course of the trial. The Green bars are the average methane yields in m3 per tonne volatile solids for each month, and the Black line is cumulative amount of CreChar in the system.

  • The operator reported 8% reduction in expensive feedstocks whilst maintaining the engines at full capacity.
  • 8% reduction in digestate disposal costs
  • Smooth performance was observed and confirmed with chemical analysis
  • PAS 110 analysis of the digestate has also shown that CreChar has no negative impact on digestate quality for application to land. 57t of Co2e were removed via CreChar sequestration in the soil through digestate.
Case Study A Graph Benefits

Increased methane yield and reduced feedstock usage will help Strathendrick achieve annual savings of £129 k/y that can be increased up to £225k/y with increased dose, regular use of the product and after sales support from Carbogenics.


For further information on Crechar® and other services from Carbogenics please contact:

Lidia Krzynowek: (COO and Co-Founder)

David Vaughan: (AD Business Development
and R&D Director)