Monofacial solar panels (SPs) have been widely used in the architectural design of buildings and city planning. Despite having 60% more output capability, bifacial SPs were not applied in city design compared to conventional one-sided SPs. Therefore, this study compared various types of solar cells (SCs) and SPs in modeling and experimenting, as small-scale decentralized power sources. The optimal orientation angles of bifacial silicon SPs have been estimated. The optimal parameters of installation and rear reflecting surface color have been studied to obtain the highest yield from the bifacial SPs. External walls and translucent windows on the sunny sides of modern buildings are used as secondary light reflectors on the back side of double-sided SPs. The experiments showed that bifacial SP outperformed its monofacial counterpart by almost 1.6/1.7 times. The relatively high efficiency of hybrid solar photovoltaic and thermal power plants with bifacial Si SCs is shown. The monthly and annual performance of mono and bifacial PV-based hybrid systems has been compared in Andijan city’s metrological condition. The technical and economic indicators for implementing bare PV and hybrid photovoltaic and thermal power plants with bifacial Si SCs are substantiated. Their high economic efficiency compared to traditional SPs and collectors has been shown. A comparative analysis proved that the application of bifacial SPs is a new architectural design direction in modern urban planning.