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Best Energy from Waste Initiative: Carbonarius

Carbonarius is a joint venture company between the UNA Group and O-Gen UK who in partnership with Mitie have developed a new waste wood fuelled biomass plant, known as O-Gen Plymtrek.

Located at Plymouth, the plant utilises an advanced conversion technology to recover heat and electrical power from waste wood, generating 4.1MWe with a further 1.6MWth of heat available for export.

As a timber resource recovery plant it will recover clean ferrous and non-ferrous material for recycling, charcoal for heating, heat for nearby buildings through combined heat and power, and renewable electrical power.

It demonstrates Best Practicable Environmental Option (BPEO) and Best Available Techniques (BAT) and redefines performance benchmarks for emissions performance and energy efficiency for treatment technologies in this sector, as well as helping the UK meet its CO2 emissions targets.

As a small sized facility treating locally available biomass, it keeps transportation distances to a minimum, while recovering valuable products from this otherwise wasted material as heat, electricity, charcoal and clean metal recyclates. Efficiencies are realised by the localised rather than regionalised scale of operation which will prevent waste from being transported long distances and the recovery of a secondary charcoal fuel.

The judges said: “We were very impressed with our winning initiative - especially as they work in what has previously been considered a ‘difficult area’ of the industry. The project offers great potential.”



  • GreenEfW Investments
  • LondonWaste
  • Northumbrian Water
  • Scottish & Southern Energy
  • Viridor
  • Veolia Environmental Services

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