renewables & onsite generation


Energy can be recovered from many types of waste using many different techniques. 

Waste-to-energy (WtE) is the process of generating electricity or heat (energy) from a waste source.  

Most WtE will produce energy after combustion or will produce a combustible fuel such as methane, ethanol etc. 

Wet organic waste, such as food waste, agricultural waste, animal slurries, feedstocks and organic matter aka biomass is an ideal input waste for anaerobic digestion (AD), the product of which is biogas then used to generate energy.  

AD is a renewable energy technology that relies on the natural biological processes that in the absence of oxygen, breakdown biomass to produce methane (biogas) that can then be used to produce electricity, heat or vehicle fuel.   

After treatment, biomass is placed in a sealed tank where micro-organisms break down the organic materials and release a gas that is approximately 60% methane and 40% carbon dioxide. The methane is then used to generate renewable electricity and heat. A biogas engine will have a conversion efficiency of up to 35% (biomass to electricity) with the remainder being available as heat. 

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waste to energy