How It Works
Our biogas process is simple: we take local liquid by‑products, break them down naturally, capture the energy they release and refine it into renewable gas for the UK grid.
Feedstock Delivery
Northwich Biogas receives liquid by‑products from local food and drink manufacturers — such as breweries, dairies and food processors. These materials arrive in sealed tankers to prevent spills and odour, and are pumped directly into onsite storage tanks ready for processing.
Anaerobic Digestion
Inside sealed, temperature‑controlled digesters, naturally occurring microorganisms break down the organic material in the absence of oxygen. This process gradually converts the liquid feedstock into a mix of methane and CO₂, creating renewable biogas.
Biogas Upgrading
The raw biogas is cleaned and refined to produce high‑purity biomethane suitable for injection into the UK gas grid. At the same time, the captured CO₂ is purified and liquefied for use in industries such as food and beverage manufacturing.
Useful By‑Products
Once digestion is complete, a nutrient‑rich material called digestate remains. When produced to quality standards, it can be used as a natural fertiliser. Any contaminants — such as small plastics — are removed and handled by licensed waste contractors.