In this section, we discuss various aspects that are relevant for the development of future energy prices, focusing on natural gas. The IEA (2012) reports energy consumption in public buildings as part of Commercial and Public Services. In 2009, the EU27 consumption in that category totaled 140.5 million tons of oil equivalents, accounting for about 12% of total EU27 energy con- sorption. Fig. 2 breaks down the total supply by energy source. Electricity makes up 47% of the total and natural gas provides 30%