VAT Goes High Tech to Light Production Facilities â and Save Energy 'Production facilities like the VAT vacuum valve manufacturing sites in Switzerland and around the world use a hefty amount of energy: to run the production systems, the heating and cooling systems - and keeping everything lit,' explains Heinz Märkli, VAT Environmental Program Manager. 'That makes every improvement important in the final tally of our overall energy consumption.' The shift to new LED lighting systems for the VAT production plants is part of a the company's global sustainability initiative, which includ...