The main purpose of the modernization is a more reasonable use of electricity in the building. Solar panels installed on the roof of the White house, will help the presidential residence to completely switch to renewable sources of energy. Here, set in the near future and all the necessary equipment to save energy.
Note that the installation of solar panels, President Barack Obama said in 2010. The President's administration claims that considering the active use of alternative energy sources, as part of a plan to combat global warming was going.