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 includes installation of rooftop solar arrays to generate electricity and the increased use of thermal exchange systems using groundwater to cool production systems. The initial upgrade to LED lighting was begun at the Haag facility in Switzerland and also includes the Penang facility in Malaysia. Further VAT production facilities are also scheduled for a lighting upgrade.