William Grant & Sons is at the forefront of best practice regarding energy efficiency in the manufacture of distilled spirits. As an independent family-owned business, we take every opportunity to implement the most effective and efficient technology across our operations and sites in order to improve our environmental foot-print and reduce our energy bills.As part of this long term strategy we have been producing our own heat and electricity via a Combined Heat and Power plant (CHP) which burns gas and allows us to return surplus electricity to the grid.Our grain whisky stills at The Girvan Distillery in Ayrshire have a unique patented design which utilises vacuum technology to improve efficiency by using less energy.We have also installed Thermal Vapour Recompression technology on several of our stills in order to optimise their energy efficiency and reduce our energy requirements per unit of production.Our latest innovation is to be the first Scotch whisky producer to install an Anaerobic Reactor. This plant, located in Girvan, allows the production of methane gas from our effluent stream. This gas is burned in turbines which produce renewable energy in the form of electricity and heat. It also has the added benefit of improving the quality of our effluent.