The use of building-integrated clean energy sources is expected to grow, according to a new survey of architects commissioned by PPG Industries.

The study also found that while the volume of work for US architectural firms overseas has remained steady, they are completing more projects in China, Canada and the Middle East.

The PPG survey indicated that architects are almost evenly split on whether they have specified clean-energy generating elements, such as solar panels and mini wind turbines, for building projects. While 42% of respondents reported having done so, nearly three-quarters (74%) said they expect to do so in the future. Most said they see new incentives and falling technology prices driving this trend, as well as the positive sentiment associated with clean energy.