This will be automatic in tutorial and campaign, but in multi-player and player vs CPU you must activate it change |Enable cheats|No| to |Enable cheats|Yes|. Press the key to the left of enter and over shift (different in different keyboards). Then enter these to fulfil your requirement:

cheat_coal(#) - gives you the number of coal you've typed in.
cheat_electricity(#[)/b] - gives you the number of electricity you've typed in.

To use these codes, hit the tilde key (~) to bring down the console. Press enter to enable them. Typing them again and pressing enter may disable them.

Code Result
cheat_electricity(number) Award yourself with more electricity
cheat_rank Raise your rank
cheat_coal(number) Award yourself with more coal
cheat_killself You will die
cheat_buildings Gives you all building types