What is the exemption from taxes on electricity?
No law of a State shall impose, or authorize the imposition of, a tax on the consumption or sale of electricity (whether produced by a Government or other persons) which is consumed by the Government of India, or sold to the Government of India for consumption by that Government, or consumed in the construction, maintenance, or operation of any railway by the Government of India or a railway company operating that railway, or sold to that Government or any such railway company for consumption in the construction, maintenance, or operation of any railway, unless Parliament by law otherwise provides.