Hanergy and Survey Digital sign a 5-year contract for corrective and preventive maintenance of the central inverters of its Greek PV portfolio. The cooperation regards to five individual solar installations of a total of 5.5MWs, 2MWs in Viotia with Power-One Ultra 1040, 2MWs in Imathia with Power-One Ultra 1040, 2×500 kW with Fronius Agilo 100 in Karditsa, as well as 500kW in Trikala with Fronius Agilo 100.