Sainsbury's is looking closely at opportunities to use the energy generated from its food waste via anaerobic digestion (AD) to power its stores or nearby low cost housing.
The retailer is examining the feasibility of building new stores around existing AD plants where it can directly feed these facilities with its own food waste. In turn, the outputs could provide low cost heat and power back to the store.
http://www.edie.net/news/news_story.asp?id=21323&title=Sainsbury%27s+to+investigate+closed+loop+AD+model+