Energy Blue Print
Scenario for a future energy supply

Moving from principles to action for energy supply that mitigates against climate change requires a long-term perspective. Energy infrastructure takes time to build up; new energy technologies take time to develop. Policy shifts often also need many years to take effect. In most world regions the transformation from fossil to renewable energies will require additional investment and higher supply costs over about twenty years.

solar thermal technologies

Solar collectors depend on direct solar irradiation, so the yield strongly depends on the location. In very sunny regions even very simple collectors can provide hot water to households at very low cost. In Europe, thermosiphon systems can provide total hot water demand in households at around 400 €/m2 installation costs. In regions with less sun, where additional space heating is needed, installation cost for pumped systems are twice as high. In these areas, economies of scales can decrease solar heating costs significantly. Large scale solar collector system are known from 250-600 €/m2, depending on the share of solar energy in the whole heating system and the level of storage required. While those cost assumptions were transferred to all OECD Regions and the Eastern European Economies, a lower cost level for households was assumed in very sunny or developing regions.