The performance of four domestic rooftop 7.8 kW − PV in the Kingdom of Bahrain: toward low building emission

This paper reports the performance of four domestic houses at different locations in Bahrain, each have 7.8 kW PV on roof, and all panels are tilted 12°, but azimuth (orientation) these varies slightly from south (±10°); depending roof space availability building surroundings. The data year 2019 been used because were monitored, maintained, cleaned by an assigned company government. annual solar electricity generated was 11,329 kWh, 11,448 10,978 9995 kWh for # 4, 2, #1, 3, respectively. Specific Yield (SY) obtained 1468 kWh/kW, 1452 1407 kWh/kW 1254 #4, 1, respectively; this makes daily average SY equals to 4.02 3.98 3.85 3.43 ratio (PR) system found range 75.1% 65.6%. performs better house #4 due its panels' angle which is closest direction. A polynomial equation established, relating month number (X) monthly as well specific yield (Y). work shows that installing a p residential Bahrain will reduce total CO 2 emission 39.0% (4.637 tons) per year, saving 38,567 ft 3 natural gas. step towards low-carbon building; attempt make zero carbon 2060.