France–Germany relations of the further integration of the EU. They are sometimes described as the "twin engine" or "core countries" pushing for moves. A tram straddling the Franco-German border, across the river Rhine from Strasbourg to Kehl, was inaugurated on the 28th of April 2017 symbolising the strength of relation between the two countries. Both France and Germany track their history back to the time of Charlemagne, whose vast empire included most of the area of both modern-day France and Germany – as well as the Netherlands, Belgium, Luxembourg, Switzerland, Austria, Slovenia, and northern Italy. The death of Charlemagne's son Louis the
Energy policy of Belgium Germany, Italy, Spain, France and Portugal. Wind electricity production per inhabitant in 2009 was in Belgium 93 kWh/person compared to Spain 794, Germany 461, the Netherlands 278, Britain 138 and France 121. Belgium had in 2007 FiT for small installations of photovoltaic solar power. Target for biofuels was in Belgium was 5.75% by 2010. The EU Biofuels Directive (2001) requires 5.75% biofuels of transport fuels excluding aviation by December 31, 2010. As of 2009, there was 3.3% of electricity coming from renewable energy. The Flemish Region published various "Beleidsnota energie". The 2004-2009 version was published by Minister Kris Peeters. The