This report argues that green growth can meet the challenge of promoting economic growth while not irreversibly depleting natural resources and the environment. For a variety of economic and structural reasons, the energy sector poses a particular challenge to green growth, according to the report. However, it finds that with significant, focused investment, global emissions could be cut in half by 2050. The authors urge policymakers to act quickly to enable investment in the energy sector before it becomes more expensive to achieve the same reductions. In addition to the full report in English, executive summaries are provided in German, Japanese, Portuguese, and Russian.