Electricity represents 17% of overall global energy demand and is expected to increase to 23% by 2050 (IEA, 2010b). According to the IEA BLUE Map Scenario, electricity demand is growing between 30% and 37% in OECD member countries from 2007 until 2050 compared to 104% to 509% in non-OECD regions in the same time period. Electricity provides lighting, refrigeration and appliance power that would be difficult to replace with other forms of energy.