Why would you need steam and not have fuel of some sort available? AFAIK the only applications for steam are power generation and cracking coal to oil, both situations where an electrically powered boiler doesn't make sense.
You can't have a net gain of energy with an electric boiler feeding a steam engine otherwise you make a perpetual motion machine (all of which violate various laws of thermodynamics).
You already have coal being fed to a coal to oil cracking plant so just split off a yellow belt from that to feed the boilers there.
Other than that, I'm not aware of a use for steam, if there is one then I might see a reason to have an electric boiler.
