Energizing Brew


A new facility in the UK, Adnams Bio Energy anaerobic digestion plan, using brewery waste and local food waste will begin producing renewable gas which can be used as liquid fuel among other things.

Working in partnership with National Grid, the facility expects to generate up to 4.8 million kilowatt-hours of energy per year – that is enough to heat 235 family homes annually.

Well, the average home in the UK burns 56 kilowatt-hours of gas per day. The same amount of energy which could be generated from the waste left behind from brewing roughly 600 pints of beer.

Some 28 million pints of beer are enjoyed daily by Britons — well, the waste from brewing that much beer could produce enough biomethane to heat 47,000 homes.

The Adnams plant plans to be able to produce enough renewable gas to power the company’s brewery and run its fleet of lorries, while leaving up to 60% of the remaining output available for injection back into the national grid.

By diverting waste from landfill, the plant will also prevent the release of methane into the atmosphere.

Biomethane is like natural gas. Once it’s upgraded to grid specification, it may be injected into the gas network to be used by customers.

National Grid suggests that biomethane could account for at least 15% of domestic gas consumption by the often-cited year 2020.

The Adnams Bio Energy plant has three digesters – these are sealed vessels in which naturally-occurring bacteria act without oxygen to break down up to 12,500 tons of organic waste every year. In addition to producing biomethane, the process also yields a liquid organic fertilizer.

Working in connection with Centrica, the parent company of British Gas, Adnams Bio Energy has also deployed British solar thermal panels at the plant and will soon install cutting-edge photovoltaic cells on site, thereby creating a sort-of mini energy park.

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