Finding the minimum power required in an electricity generating station.

An electricity generating station has a rated output of 300 megawatts.  Given that the station heat rate is 12 000kJ/kW-h, and the coal used has a heat value of 23 000kJ/kg, find the minimum possible belt-drive power required for the bunker coal conveyor in order to keep the boiler supplied when the station is on full load.  The conveyor is to rise 15 m at an inclination of 18 degrees to reach the bunkers.  The belt runs at 3.5 m/s and the mass of belt used in 7.5kg/m.