The government has increased focus on developing solar and wind projects to raise energy efficiency and reduce greenhouse-gas emissions by 40% by 2020 over its 1990 levels.
German firms operating in resource efficiency, sustainable transport and recycling domains are expected to capture a market share of more than 15% and create about one million jobs, Bloomberg reported citing the study.
Germany Environment Minister Peter Altmaier, who commissioned the study, said that green technologies have lot of growth potential.
"We still have a leading position in clean technologies and we will do everything to defend that," Altmaier said.
The study also observed that the global market for clean technology would double to reach €4.4 trillion by 2025.
