(4-traders.com) Accra, May 24, GNA - The Accra Polytechnic has inaugurated its solar educational trail which has a total of five photovoltaic systems to beef up the supply of energy in the institute. The facility has a back-up system rated power of 2940 Watt, with a battery capacity of 14,8 kWh voltage 48 V, that continuously supplies electricity to...http://www.4-traders.com/DENA-CO-LTD-6497537/news/DeNA--Accra-Polytechnic-inaugurates-solar-installation-facility-18493478/