During play, press ~ to bring up the console. Then type any of the following codes:

cheat_coal(#)            Add # Coal
cheat_electricity(#)     Add # Electricity
cheat_buildings          Add Buildings
cheat_rank               Go up in rank

The maximum coal/electrcity number is 9999.

Thanks to Revolution readers sycojr06, marc fischer, Che@tmaster and Silver_Wookie!