The government of China’s Shandong province has revealed progress on its programme of planned efficiency conversions on existing residential buildings, representing 19.5 million square metres of space.

Central to the scheme is the development of building integrated solar photovoltaic (PV) systems (BIPV) and the province has reportedly already completed 775 BIPV projects representing 27.6 million square metres.

According to a spokesman, the province initially aims to outfit all buildings with 12 stories or fewer with BIPV and solar hot water systems.