FrankfurtRheinMain is recognised as one of the larger metropolitan regions of Germany and is named after its largest city, Frankfurt, and its two main rivers, the Rhine and the Main. The region covers 14,755km2 and in 2009 had a population of approximately 5.5 million people. The majority of the FrankfurtRheinMain region lies within the state of Hesse, with the remainder lo- cated in the states of Rhineland-Palatinate and Bavaria.

 The regional objectives and strategies of the Frankfurt- RheinMain metropolitan region are managed by the Regional Association which is responsible for sports and recreation, culture, location marketing, economic development and regional transport planning and man- agement. The Regional Association is also responsible for the development of the Regional Land Use Plan and Landscape Plan and manages projects funded by the European Union. It offers an advisory function for its communities.

 The majority of generated statistics used in this re- search relate to the Government District Darmstadt (GDD), an area that covers the south of the state of Hesse and the core of the FrankfurtRheinMain region.

 The city of Frankfurt is the fifth largest city in Germany. The landscape of the region is dominated by the upper Rhine trench and the adjoining hills of the Taunus, Od- enwald and Spessart. There are areas of open country- side remaining in the region and a large urban forest in the city of Frankfurt. Within Germany, this region is one of the more economically successful areas, gener-ating around 8% of Germany’s GVA with 7 % of the country’s population. The service sector provides over 77% of the region’s jobs. The sub-sectors of finance, logistics, transport, ICT, consulting and creative industries are significant business areas. Banking services in Frankfurt (home to the European Central Bank, the German Federal Bank, the Frankfurt Stock Exchange and many credit institutions) are key to the region’s economic strength. There are several universities located within the GDD including the University of Frankfurt and the European Business School.

 The metropolitan region is a major European trans- port hub, connected by road to Cologne, Nuremberg, Stuttgart and Kassel. Frankfurt’s main train station, one of the largest railway stations in Europe, accommodates 350,000 passengers daily. In the metropolitan region there is an S-Bahn which connects the major centres and light railway and bus services. Frankfurt airport is the third busiest by passenger numbers in Europe, han- dling over 51 million passengers and almost 2 million tonnes of freight in 2009.

 The Regionalverband is combining and linking the regional activities to the topics climate and energy in the FrankfurtRheinMain region. The region produce an exhibition that focused on the causes and conse- quences of climate change. It has also published and communicated the outcomes of model projects on the issues of climate protection, sustainable energy usage and adaptation to climate change. Frankfurt provides information on wider environmental issues and the ac- tions they are taking to address them. The Energy and Climate Protection Concept adopted by the city in 2008 provides practical guidelines to reduce CO2 emissions in the GDD.

 Many municipalities and districts of the region have been active for quite some time and initiated a num- ber of measures to protect the climate. For example the city of Frankfurt has a long history of considering energy in planning, The city of Frankfurt’s Energy Office has been part of the Building Department since 1983.