The Department of Energy, (DOE) raised the efficiency requirements of transformers in April 2013 to be implemented January 1, 2016. Manufacturers may no longer produce current EPACT 2005 (previously TP-1) units after 2015. Pricing has not been finalized, but may result in a 15-30% increase. Sola HD has been working to re-tool its product line to adhere to the new DOE 2016 government standards ahead of the January 1st effective date. Redesigns are complete and initial product manufacturing is underway. You will be able to order the DOE 2016 certified equipment in October 2015.