:Sulfur. This is measured in number of pounds per MM Btu. Due to emissions regulations set forth by the EPA, it is desirable to achieve low sulfur content. Coal traders must be aware not to purchase coal with high sulfur content for a plant with machinery that does not operate efficiently; otherwise, the plant may not meet EPA standards and may be forced to shut down
:Caloric value This is the Btus per ton. This will change based upon for which plant NEP is purchasing supplies. One ton of coal with 12,000 Btu content will produce more electricity than one ton with 10.000 Btu content