Both the engine and the digestion system operation costs are
included in the O&M of the system. Feeding the digester with
substrate on a daily basis is also included in this price. Since the
biogas is produced locally, the fuel price is included in the O&M
cost. The O&M cost is dependent on the price of daily labour work
for collecting the substrate, preparation and feeding to the digester.
The digester system also should be monitored on a daily basis.