PT. Netwave Teknologi as Solar PV System Provider has successfully conduct a trial of  Solar PV System for Power Source of BTS. The trial was held in cooperation with PT. Indosat Tbk., one of GSM Operator in Indonesia. It was held on January to February 2008 in one of PT. Indosat Tk.’s BTS in Tomohon – North Sulawesi. The system itself is a hybrid system between Solar PV System and Electric Generator set and implemented in the middle of bad weather condition but the trial went well as expected.