Gigawatt hours to tons of coal equivalent conversion calculator shown above calculates how many tons of coal equivalent are in 'X' gigawatt hours (where 'X' is the number of gigawatt hours to convert to tons of coal equivalent). In order to convert a value from gigawatt hours to tons of coal equivalent (from GWh to TCE) just type the number of GWh to be converted to TCE and then click on the 'convert' button.