The Fraunhofer Institute for Solar Energy Systems ISE has developed an index that determines the extent to which energy policy in various countries around the world is already well advanced. This "Energy Transformation Index" (ETI) measures both the establishment of renewable forms of power generation such as photovoltaics and the really efficient use of energy.

Germany lies with the progress of the energy revolution behind the countries of Sweden, Brazil and Italy on a par with Japan and the United Kingdom to fourth place. The results of the "Energy Transformation Index" (ETI), a new ranking, which will in future regularly publish together with the International Solar Energy Society ISES the Freiburg Fraunhofer Institute for Solar Energy Systems ISE. "So far there has been no methodical approach with which we could describe the progress of individual countries and regions quantitatively on the way to the energy revolution," says Prof. Dr. Eicke Weber, Director of Fraunhofer ISE. The now developed EIT would permit for the first time, to describe the situation of a country in this respect by a catchy number. "Compared to other states if it is considered that the energy revolution in this country is not as advanced as it is generally believed," says Weber.

"The basis for this new index an idea that was introduced two years ago at the annual meeting of the research network Renewables FVEE," says Weber. The former representation described on the x-axis the share of renewable energy in the total energy mix. On the ordinate, the energy efficiency found as the ratio of gross domestic product (GDP) or "gross domestic product" (GDP) and energy consumption. »The defined here Energy efficiency is the inverse of the known energy intensity of GDP, which describes how much energy is required to produce a unit of GDP," says Weber. "The inverse amount, which describes how much dollars in economic performance can be obtained for a unit of energy should be as large as possible and is therefore well suited as the ordinate of such a graph."

"After the progress in the transformation of the energy system in two essential aspects of energy efficiency and the development of renewable energies, clearly, it became clear there was to consider whether it is not a catchy number could be developed," said Weber about the origin of the "Energy Transformation Index. " However, in order to ensure consistency, must be produced on the abscissa, a reference to the overall power consumption. "As a target of the transformation of the energy system should of course a percentage of 100 percent renewable energies are, on the ordinate, however, is a target of the energy efficiency more difficult to define," says Weber. Fraunhofer ISE is selected as the target of the efficiency value of two dollars a kilowatt-hour, roughly double the efficiency of today's Germany.

Now, to create an index, it was the first approach, the length of the vector from the origin (0,0) with each point for a specific country to calculate, and to share this length by the length of the optimal vector. A more detailed analysis shows, however, that this approach would reward deviations on the way to the ideal point," says Weber, "for countries that initially emphasized only one of the two factors, performed better than countries that are already on the ideal 45 - progressed degree path. "So it made sense to define the projection of the vector as an index of a particular country on the diagonal, divided by the length of the ideal vector.

Energy Transformation Index of Countries- ETI |

In the result, Sweden is in the presented at the ISES conference first ranking of 17 states in the first place with an EIT of 40 just ahead of Brazil with 39 Germany (30) follows behind Italy (34) Japan (30) and the UK (30) par on the fourth. When the growth rate since the year 1990, however, Germany is located along with Britain at the top. In decapitated seats in the current index value is currently countries like the USA (18) and China (11) find. The EIT ranking also has a direct relation to the climate problem. 100% renewable energy also mean no CO2 emissions more from the energy sector, and also the improvement of energy efficiency affects of course directly in the reduction of CO2 emissions.

"In the future we would like to annually publish such a ranking to document which countries tackle the energy change seriously, and who thereby remains," says Weber. This should be considered the values for the 82 major states as a basis. "We expect that this regular publication provides a further incentive to really deal effectively with the global task of the energy revolution," says Weber, "for mankind to live on a permanent basis only sustainably on our planet."

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