Electricity generation. The production of electricity in 2013 was 23,322TWh. Sources of electricity were coal and peat 41%, natural gas 22%, hydroelectric 16%, nuclear power 11%, oil 4%, biomass and waste 2% and other sources 4%.
The nine Supreme Court Justices on the Supreme Court of the United States are the final arbiters on whether or not a law passed by the legislative branch is constitutional.
There are currently nine justices serving on the Supreme Court; listed in order of seniority, they are: 1  John Roberts, Chief Justice. 2  Anthony Kennedy, Associate Justice. 3  Clarence Thomas, Associate Justice.  Ruth Bader Ginsburg, Associate 1  Justice. Stephen Breyer, Associate Justice.  Samuel Alito, Associate 1  Justice. Sonia Sotomayor, Associate Justice.