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Follow the ‘field to mulch bag’ process

The field to mulch bag process

  1. Arable crops of maize, barley, rye, oats and grass are grown at our farm and partner farms
  2. Harvesting of the arable crops. Harvest takes place annually from July to November
  3. The harvested crops are fed into Ag-bags, sealed long plastic tubes used for ensilement
  4. The crops are stored in Ag-bags in a field for up to 12 months. The silaging process takes around 6 weeks
  5. The ensiled crops are loaded and transported back to the farm then fed into the anaerobic digesters.
  6. A biodigester acts like a cow’s stomach to break down crops. Biogas is produced including methane and CO2
  7. Biomethane gas produces renewable green energy for export to the National Grid, heating around 8,500 homes
  8. A co-product of the biogas production process is digestate, used as a soil improver/ fertiliser
  9. The solid digestate is sold as soil improving mulch which is 100% sustainable, peat-free and approved for organic use
  10. The liquid digestate is sold as a fertiliser, approved for organic use and free from peat and waste
  11. Sustainable CO2 is a co-product of biomethane production. Our food-grade, high quality liquid dioxide is ISO approved. Read more here
Harvesting of crops
Foraged crops are stored in ag-bags in fields
Crops being collected from the ag-bags to take back to the farm
In the digester nature gets to work, thanks to 37,000m3 of bacteria-rich material we have grown.
Biodigester at Apsley Farms
Apsley Farms produces food-grade CO2 as a by-product of the biodigester process
Sustainability is at the heart of Apsley Farms

• Biogas is 100% renewable and carbon-neutral,  preventing the release of methane into the atmosphere with a positive impact on the environment

• Our activities have reduced the UK’s energy-related CO2 emissions from gas by around 140,000 tonnes of CO2 since 2014

• With a carbon footprint of around 5% of ‘natural gas’ (i.e., savings of 95%) our biomethane production provides a sustainable fuel to meet the UK’s energy needs and climate targets

About Apsley Farms

Sustainability and efficiency are at the heart of everything we do at Apsley Farms. Embracing cutting-edge technologies, we have transformed low-value crops into renewable energy. Furthermore, we’ve focused on operating within a circular economy, notably by returning the nutrients in our digestate products back to the land as a fertiliser.
Our process of generating green gas and other important by-products achieves three critical objectives: Firstly, it displaces natural gas (fossil fuel) in the gas grid to heat people’s homes; secondly it displaces CO2 produced by the fertiliser industry, which is essential in the food industry thirdly it simultaneously generates natural fertiliser in the process!