Mainland Greece had 2,442.6 MW of installed PV capacity as of the end of April 2015, according to the Hellenic Transmission System Operator SA (HTSO). The Greek mainland had 2,092.06 MW of installed grid-connected PV systems over 10 kW and 350.54 MW of rooftop PV systems up to 10 kW at the end of the month. In April, the country added only 80 kW of new PV systems. In the same month of 2014, the newly installed PV power was of 200 kW. The country added 6.9 MW of new PV capacity in the first four months of this year, up from 2.2 MW in the same period of 2013. HTSO’s figures do not include the installed capacity of non-interconnected Greek islands, which – according to the Hellenic Electricity Distribution Network Operator SA (HEDNO) – reached 135.9 MW at the end of 2014. Based on the most recent data available, Greece has a total installed PV capacity of at least 2,580 MW.