evidence: Sri Lanka receives significant amount of solar radiation across all geographical regions. The Global Horizontal Irradiance (GHI) varies between 1,247 kWh/m2 to 2,106 kWh/m2. It is interesting to note that the intensity of solar irradiation in lowland areas is high compared to mountainous regions. This is largely due to the continuous presence of clouds in mountainous areas and the shadowing effect of mountains. The intensity variation of Direct Normal Irradiance (DNI) is similar to that of GHI. [...] On September 6, 2016, the Government launched an enhanced version of the Rooftop Solar PV Programme under the theme "Sooryabala Sangramaya" which converts to "Battle for Solar Power". Under this programme, excess energy exported to the grid can either be carried forward (as originally done in the net-metering scheme) or encashed (this scheme is identified as net-accounting), at a tariff of LKR 22.00 per kWh during the first seven years and LKR 15.50 per kWh during the remaining thirteen years. The programme attempts to encourage institutional users through a third scheme, known as the micro power producers’ scheme, where all generation is exported through a separate export meter without making any change to the electricity users metering method.