One measure of the efficiency of a generator or power plant that converts a fuel into heat and into electricity is the heat rate. The heat rate is the amount of energy used by an electrical generator or power plant to generate one kilowatthour (kWh) of electricity. The U.S. Energy Information Administration (EIA) expresses heat rates in British thermal units (Btu) per net kWh generated.
The Constitution specifically grants Congress its most important power â the authority to make laws. A bill, or proposed law, only becomes a law after both the House of Representatives and the Senate have approved it in the same form.
The Constitution established three separate branches of federal government â the legislative, the executive, and the judicial â and each branch wields and asserts only those powers specifically or implicitly provided to it in the Constitution.rticle II of the Constitution vests the powers of the executive branch in the President of the United States and details the powers of that office. In short, the executive branch is responsible for carrying into effect the laws as passed by the legislative branch and making sure that the laws are observed.