The Ministry of Environment estimates the worldwide investment in RES should be multiplied by five from EUR 122 billion in 2005 to EUR 590 billion in 2030. Depending on the assumptions made on German export market shares, the estimated impact on GDP of the RES policy varied by 20% and the impact on employment by one third (BMU, 2011). Implementing cost-efficient climate change policies will not be sufficient to maintain the leadership on green markets.