Electrical requirements for a bearded dragon?

It will be a young one at first, but still living in an adult sized tank. I already have a thermo regulator heat map that keeps the tank at a set temperature (what would be the best?) and then a large heat lamp. I'm not sure of the wattage, but it used to be for a tortoise, if that makes any difference. Will I need anything else, and then is the stuff i've got alright?