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Case study Volkswagen 3/4


VW a penny. David Gustashaw, an ener- gy and utility specialist in VW’s plant infrastructure department,


says: “The


project was financed by a third party and we purchase the entire solar output through a power purchase agreement.” VW Chattanooga has made a commit- ment to source 35% of its energy needs from renewable sources, and Gustashaw says the remaining 22.5%, not supplied by the solar array, comes from external providers through the Green-e renewable energy certificate accreditation scheme. Alongside its use of renewable ener-


gy, VW has also set targets for reduc- ing its overall electricity use through the introduction of efficiency measures. Gustashaw says: “We have an objective of a 20% reduction by 2018 through our Mach 18 strategy. “We achieved a very good reduction in our first full production year, 2012, and are looking to achieve our goal through a balance of equipment-related projects and behavioural change.” However, despite using other renewable technologies such as wind and hydro- electric generation at other VW manu- facturing sites, there are no plans in place to increase the amount of renew-


Fuel efficiency: the Golf TDI BlueMotion


able energy generated and consumed at Chattanooga, for a number of reasons. Scherelis says: “Half a mile from the factory we have a nature park, and on


the other side there are two protected wetlands, so there is no scope for expan- sion of industrial activity.


“Also, the site here is not so suited to


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