Tons of coal equivalent to terawatt hours converter above calculates how many terawatt hours are in 'X' tons of coal equivalent (where 'X' is the number of tons of coal equivalent to convert to terawatt hours). In order to convert a value from tons of coal equivalent to terawatt hours (from TCE to TWh) just type the number of TCE to be converted to TWh and then click on the 'convert' button.