Fossil fuel means natural gas, petroleum, coal, or any form of solid, liquid, or gaseous fuel derived from such material.
Spent fuel means any fuel element or fuel component, solid or liquid, which has been used or exposed to radiation in a nuclear reactor;
Fossil fuel-fired means the combustion of fossil fuel or any derivative of fossil fuel, alone or in combination with any other fuel, independent of the percentage of fossil fuel consumed in any calendar year (expressed in mmBtu).
Coal means non-coking as well as coking coal, produced by the Seller and categorized into different classes, GCV bands, Grade(s) and sizes, as per the notification/order issued for such purpose by Government of India/CIL/Seller and it is clarified that Coal shall also include the middlings arising out of washing of coking coal and non-coking coal, as the case may be.
Biodiesel fuel means a renewable, biodegradable, mono alkyl ester combustible liquid fuel derived from agricultural plant oils or animal fat such as, but not limited to, soybean oil. For purposes of this definition, “biodiesel fuel” must also meet the specifications of American Society for Testing and Material Specifications (ASTM) D 6751-02, “Standard Specification for Biodiesel Fuel (B100) Blend Stock for Distillate Fuels,” and be registered with the U.S. Environmental Protection Agency as a fuel and a fuel additive under Section 211(b) of the Clean Air Act, 42 U.S.C. Sections 7401, et seq. as amended through November 15, 1990.