Our history

Agrivert has established itself as a market leader in the development and operation of organic waste treatment facilities. Widely recognised for creating facilities that are best in class offering high availability, operability and robustness, derived from 25 years of extensive operational experience.

2018 was a very exciting year for Agrivert. Having received an unsolicited approach from Severn Trent Green Power Ltd to purchase our food, green and commingled waste assets Agrivert sold the Company in a £120 million deal. As part of the deal, Agrivert retained its engineering, commercial and operational IP alongside its established brand identity to focus on other opportunities both domestically and across the world. For any queries in relation to processing food waste or green waste please visit STGP at stgreenpower.co.uk.

In March 2018, Agrivert assumed the operation and maintenance contracts for 12 farm anaerobic digestions sites and several EPC contracts for new build farm AD facilities. Agrivert plans to expand within the farm AD sector through acquisitions and build projects over the coming years.

We were thrilled to see our hard work and achievements recognised by ADBA, collecting their awards for Best AD Plant of the year (for two consecutive years). Further information on our Awards and Recognition's can be found here.

Our growth and success has been exponential over our 25 year lifespan. This is largely thanks to our customer-focused and technically competent team, our forward thinking attitude and tailored approach to all endeavours.

Looking back through the years:

  • 2019
    • Agrivert granted O and M rights for 12 farm AD plants and secured rights to construct 3 further AD plants
  • 2018
    • Sale of UK assets to Severn Trent Green Power Ltd in November 2018.
    • We completed construction, commissioning and handover of Severn Trent’s AD facility in Roundhill, Solihull; our second 3rd party AD design and build project.
  • 2017
    • Cultivated further relationships with Local Authorities, managing waste for over 44 Authorities and several hundred commercial customers.
  • 2016:
    • We commissioned Agrivert North London AD facility in Colney Heath, Hertfordshire. Our 5th AD construction project, designed to process 50,000 tonnes of food waste each year and producing enough green electricity to power 6,000 homes.
    • We commissioned the South Wales AD facility in Bridgend, Wales. Our 4th AD construction project, designed to process 50,000 tonnes of food waste each year and producing enough green electricity to power 6,000 homes .
  • 2015:
    • We completed construction, commissioning and handover of Severn Trent’s AD facility in Coleshill, West Midlands; our first 3rd party AD design and build project.
    • We started construction of a second Severn Trent AD plant design and build project in Leicestershire and two Agrivert facilities in North London and South Wales.
  • 2014:
    • We opened Agrivert West London AD facility in Chertsey, Surrey. Number 3 in our network of AD plants, processing 50,000 tonnes of food waste and producing enough green electricity to power 4,800 homes
    • The West London plant was by ADBA and awarded with Best AD Plant of the year
  • 2013:
    • We won South Northamptonshire Local authority Food waste recycling contract, increasing our total number of LA service contracts to 22.
  • 2012: We achieved PAS110 accreditation at Cassington AD facility proving our digestate as a high quality “product” rather than a waste, thus allowing our farmers to spread it to land without the stringent controls associated with spreading wastes. We opened Agrivert Wallingford AD facility in Oxfordshire. The second in our network of AD plants, processing 50,000 tonnes of food waste and producing enough green electricity to power 4,500 homes
  • 2011: We delivered further infrastructure to complement our existing sewage treatment facilities in Newcastle and Sunderland.
  • 2010: We opened our first AD facility in Cassington Oxfordshire, in line with the UK drive for diversion of biodegradable waste from landfill and generation of renewable energy. Processing 50,000 tonnes of food waste this plant produces enough green electricity to power 4,500 homes
  • 2008/9: We won long term Local authority contracts in Oxfordshire and Hertfordshire to treat co-mingled green and food waste that had been segregated by householders at source. As a result of this, we secured land, funding and planning permission to build and operate two IVCs to service these contracts.
  • 2005: We built and began operating our first In Vessel Composting facility. This also then became the first IVC to achieve compliance with both PAS100 and the newly enacted Animal By-Products Regulations.
  • 2000–2005: We built four green waste composting sites to treat green waste arising from a number of Local authority contracts that we had been awarded.
  • 2000: We designed, built and financed a biosolids dewatering and liming plant in Newcastle for Northumbrian Water.
  • 1994-2000: We successfully operated Sewage sludge recycling contracts for Southern Water, Wessex Water, Scottish Water, Northumbrian Water and Anglian Water.
  • 1994: Alexander Maddan founded Agrivert and in response to the EU Urban Waste Water Treatment Directive (which banned the disposal of sewage sludge at sea), we became the first to UK market with innovative biosolids treatment process for the water sector.

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