Renewable Energy Conferences.com | Renewable Energy Events, Conferences, Exhibitions, Training and Seminars: Siemens boosts efficiency of PV solar inverters Siemens boosts efficiency of PV solar inverters ================================================================================ REC.com on 02/06/2010 19:37:00 Siemens AG says its new transformerless solar inverters have achieved an effiency of 98 per cent — 2 per cent higher than other inverters.