The size of the global smart grid market is estimated to be worth $500 billion by 2020 and the potential for jobs in this sector is enormous. The Smart Grid market in the U.S. is expected to double by 2014. With countries like the United States vowing to fight climate change, the implementation of the 'smart' system is vital. Transformer company, Pacific Crest Transformers has good information on the Smart Grid and the role of transformers on its website.