This exhibit demonstrates the relationship between power generation and consumption. A small electric motor is attached to a crank and serves as a generator. Three light bulbs of increasing sizes can be selected by pressing on its corresponding button. The exhibit user cranks the generator while pressing down one of the buttons to light up a light bulb. The bigger the light bulb, the harder it will be to crank the generator. It will also be hard to crank up if two or more light bulbs are presses at the same time. By experience, the user will gain understanding that the more power is used, the more resources are also needed to supply it and hence the importance of power consumption in our daily lives.

Energy Needs Work is available in the "I AM a Scientist" travelling exhibit package.