It must have broken the heart of many a drinker to hear that during lockdown, pubs with brews that were past their expiry date had to pour the beer away.

However, Hall & Woodhouse has found a more sustainable solution for what do with the unsold beer. Thanks to the brewery’s green energy focus, the returned products helped create enough electricity to power nearly 17,000 average homes for a day – or around 46 homes for one whole year.

Toby Heasman, Hall & Woodhouse head brewer, said: “Although lockdown meant that many of our pubs had to return unsold beer back to the brewery, the silver lining has been that none of this has gone to waste. Thanks to our wastewater treatment plant, all of the returned beer has been used to generate green electricity.”

The increase in demand for Badger Ales through supermarkets and stockists also served to boost the amount of green electricity produced by the brewery, as all wastewater created during the brewing process is also processed through the sustainable electricity generators.

Toby said: “Brewing is a highly energy-intensive process, so as far back as 2015, we started to look at ways we could incorporate more green energy into the way we work.  “The decision was made to make sustainable energy production an integral part of our new brewery, which came into operation in 2017. In addition to solar (PV) panels, we installed a wastewater treatment plant, which creates biogas. The biogas is fed through a unit which generates electricity to power our packaging lines and utilities.

“Heat produced by the combined heat and power (CHP) engine is used to preheat the boiler feed water, which in turn produces steam to boil the beer.”

Hall & Woodhouse, which has been based at its headquarters in Blandford Forum since 1900, sets a monthly target for the use of self-generated electricity– and sees green energy production as just one part of its longer-term objective to become carbon neutral.

Matt Kearsey, managing director said: “As an independent family-owned brewer with a heritage stretching back nearly 250 years, innovating with new technologies and ways of working has been central to our continuing success. I’m pleased to say that we are continuing to look at new ways of maximising the creation of green energy to help conserve resources.

“We have a responsibility to operate consciously, and to take continual steps to improve sustainability, as part of ensuring that as a business we thrive for generations to come.”