Time is commonly referred to in game by the unit: seconds. The game operates in a tick based sequence, where an action is queued up to be executed in the next tick. Each tick should equate to 0.2 seconds in real time, which implies that there are 5 ticks per second. The tool-tip on the Miner specifies that it requires 15 units of power, however, this is a visual conversion for the user interface and the game calculates power consumption every tick which would be at a rate of -3.