Our Green Gas suppliers: Meet Cannington Enterprises

Posted in: Green Gas

Posted on: 16.08.2017

In 2016, we launched our Green Gas, giving customers – old and new – a completely carbon neutral gas offering for the very first time.

We recently paid a visit to Cannington Enterprises, our suppliers of biomethane - which makes up 6% of our gas - to find out how it’s generated and what the future is for increased biomethane in the grid.

Based in Somerset, Cannington Enterprises has been farming in the West Country for over 100 years. Managing Director, Tim Roe, whose grandfather bought the farm in 1914, first decided to diversify the farm into generating renewable energy back in 2007.

“After starting as a traditional mixed farm and potato growers in the 1980s, we decided to diversify the farm into a cold storage facility and renewable generator just over 10 years ago as it just made sense.”

“We looked at installing all forms of renewable technology including wind, solar and hydro, but always knew that anaerobic digestion was our best and most useful option.”

With the first of three plants going live in 2009, the farm initially used waste to generate renewable electricity before moving on to producing biomethane (green gas) in 2015.

When organic matter, such as decaying food, decomposes, it releases a renewable form of methane - this is the process of anaerobic digestion. The biomethane is captured, fed into the National Grid and can then be used to heat your home!

  • Did you know that food waste sent to landfill emits methane over 20 times more damaging than CO2?

“All of the organic matter we source comes from food waste, typically from across the West Country and a range of suppliers – from supermarkets and shops, to hotels and local restaurants.”

After feeding the leftover food into the plant, machinery strips out all of the packaging – 95% of which is then recycled - and crushes the waste into a pumpable liquid, which is then fed into the digester.

This liquid then enters a 40-day cycle where the organic matter decomposes further, allowing for all the impurities to be stripped out, resulting in a 98% biomethane gas. The rest is then converted into a nutrient rich, organic fertiliser which is used on our farmland.

Where next for biomethane?

“We’re delighted to be providing Good Energy with our biomethane for its customers. It’s fantastic seeing more companies supporting the green gas industry. For me, the next step is to get more biomethane sources into our transport system, especially for vehicles on the road.”

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Jamie White

Senior Communications Executive 


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