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Energy related carbon emission of buildings is a major cause of global warming. In order to mitigate energy related carbon emission, buildings tend to adopt renewable energy technologies. Amongst renewable energy technologies, grid-tied PV technology has gained the interest of building energy consumers as an alternative energy source. Nevertheless, there is considerably low implementation of grid-tied PV technology in Sri Lanka, especially as a carbon reduction strategy. A key reason for lack of implementation of grid-tied PV system is that majority of buildings still depend on traditional energy sources for their total energy needs. Hence, there is a need of highlighting the importance of grid-tied PV system to penetrate the existing traditional energy market. The aim of this study is therefore to assess the possible energy related carbon reduction of grid-tied PV system for buildings in Sri Lanka. Accordingly, total of four (4) buildings were selected as case studies, including two buildings with grid-tied PV technology and two other buildings that are totally dependent on traditional energy sources. Subsequently, carbon footprint assessment was conducted to four (4) buildings specifying to energy related carbon emitting activities. And research findings revealed that selected two buildings with grid-Tied PV technology achieve an average reduction of carbon by 3379.77kg and 3013.06kg respectively per month compared to traditional-energy buildings. Consequently, this work has successfully identified that buildings with grid-tied PV technology achieve a reduction in energy related carbon emission compared to buildings with traditional energy sources.

ASSESSING THE CARBON EMISSION REDUCTION BY GRID-TIED PHOTOVOLTAIC (PV) TECHNOLOGY FOR BUILDINGS IN SRI LANKA