The introduction and deployment of new RE technologies from a very narrow basis holds the possibility of more considerable progress. It must be noted in this context, that while shifting from coal to gas in electricity generation does reduce GFIG emissions, in climate-friendly scenarios like the 450 Scenario of the WEO 2010 (IEA, 2010a) the global consumption of natural gas decreases after 2020 while renewable energy production continues to expand. Accepting too large an investment in renewable technologies while neglecting timely energy-efficiency programmes clearly runs the risk of locking-in societies' too-high energy consumption patterns, with detrimental long-term implications for both energy security and climate protection.