Arts & Culture

Up to 9,000 homes to be powered with energy produced by burning waste matter from the whisky-making process.

Dan Gould
  • 4 may 2011

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This article titled “Scotland toasts new whisky-powered bioenergy plant” was written by Kirsty Scott, for The Guardian on Wednesday 4th May 2011 15.24 UTC

It is the spirit that powers the Scottish economy, and now whisky is to be used to create electricity for homes in a new bioenergy venture involving some of Scotland’s best-known distilleries.

Contracts have recently been awarded for the construction of a biomass combined heat and power plant at Rothes in Speyside that by 2013 will use the by-products of the whisky-making process for energy production.

Vast amounts of “draff”, the spent grains used in the distilling process, and pot ale, a residue from the copper stills, are produced by the whisky industry each year and are usually transported off-site. The Rothes project, a joint venture between Helius Energy and the Combination of Rothes Distillers (CoRD) will burn the draff with woodchips to generate enough electricity to supply 9,000 homes. It will be supplied by Aalborg Energie Technick, a danish engineering company. The pot ale will be made into a concentrated organic fertiliser and an animal feed for use by local farmers.

Environmentalists have expressed concern that some of the wood used in the process may not be locally sourced, but say the 7.2MW project – the equivalent output of two large wind turbines – is a good scale and a valuable addition to Scotland’s renewables industry. Green energy has been a key issue in the run-up to Thursday’s Holyrood elections. The SNP leader, Alex Salmond, has pledged to produce 100% of Scotland’s electricity through renewable energy by 2020, a claim dismissed as “fantasy” by Labour.

The £50m Rothes project is the latest bioenergy venture from the Scotch whisky industry, but it is believed to be the first to provide electricity for public use. A bioenergy plant at Scotland’s largest distillery in Fife is close to completion. The project by Diageo will provide 98% of the thermal steam and 80% of the electrical power used at the Cameronbridge distillery. And last year, scientists at Napier University announced they had developed a method of producing biofuel from the by-products of the whisky distilling process which could power cars and even aircraft. The new fuel, they said, could be available at petrol pumps within a few years.

Of Scotland’s 100 whisky distilleries, 50 are based in Speyside, and Frank Burns, general manager of CoRD, said it was an ideal location for the new bioenergy plant which will be built on an existing industrial site.

“It is very well supported in the local community. Up here in Rothes and in Speyside in general we have a lot of strong links,” he said. “We had zero objections at the planning stage and we have done a lot of work within the community on the progress of the project.”

Waste products from around 16 of the area’s 50 distilleries will be used at the site, including well-known brands such as Glenlivet, Chivas Regal, Macallan, and Famous Grouse. None will come from further than 25 miles away.

Burns acknowledged, however, that some of the wood for the process may not be locally sourced. “Some of it will be local and some of it will be shipped in,” he said. “It is down to the supplier. They may source it locally.” Most of the fuel, he added, will be comprised of the draff.

Sam Gardner, climate policy officer for WWF Scotland, said:

“From the information we have, the project looks to be a very welcome addition to Scotland’s renewable industry. It is using waste products from our whisky industry which is eminently sensible thing to do, and is producing heat both for whisky production and for the local community. We would want to see assurances, however, that the biomass was sustainably sourced.” © Guardian News & Media Limited 2010

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