Anthropogenic climate change threatens the global environment, including biodiversity, and with it continued human welfare. The European Union aims to increase its share of renewable energy (RE) to 20% by 2020 in an effort to reduce greenhause gas emissions while enhancing energy security and providing opportunities for economic development. The Alpine region is expected to contribute significantly to RE expansion. The trade-offs between potential gains and losses, especially for biodiversity, from new RE developments are rarely fully considered even though biodiversity loss has significant economic costs for society. The EU Alpine Space recharge green project develops tools to evaluate the RE carrying capacity of the biodiversity-rich Alpine ecosystems. The tools will aid in the analysis of siting decisions and in weighing up costs and benefits to enable rational energy implementation decisions. The developed tools will be tested in five pilot regions in Austria, Germany, Italy, and Slovenia.