High-rise buildings reduce solar radiation on the rooftops of surrounding low-rise dwellings, resulting in lower-density residential areas receiving less solar irradiance in proximity to high-rise buildings. In contrast, low-rise dense urban village areas received the highest rooftop irradiance because high-rise buildings did not cast shadows.
The growth of Residential rooftop solar (RRS) in some western countries has predominantly been driven by individual or market behaviour and has been extensively studied. However, the development landscape of RRS in China differs, and its driving mechanisms remain unclear.
1. Introduction Residential rooftop solar (RRS) for electricity generation is essential in the new power system and vital during the low-carbon green energy transformation, which is being adopted globally (Moore and Bullard, 2021). In recent years, China’s RRS has been expanding rapidly, with the annual growth rate ranking first in the world.
China’s rural residential photovoltaic system has been greatly developed in recent years. However, most existing researches, are difficult to reflect the real development situation of the whole system.
At the same time, the Whole County PV programme provides an opportunity to revitalize rural China, local officials say. For example, homeowners can receive extra income by lending their rooftops to solar developers, or by selling the power generated by their rooftop system, Fishman says. The plan seems to be working.
In China's residential design code (Design code for residential buildings (in Chinese)), residential buildings are divided into low-rise (Area 1), multi-storey (Area 2), and high-rise (Area 3) according to their storey height.