The route taken by energy: “From the power station to the computer”
Taking energy from where it is created to where it is used requires a great deal of organisation. Energy is carried along what we call "networks": the network that carries electricity is called a "grid". There are also distribution networks for petroleum and gas.
The energy then has to be adapted to suit what consumers want. For example, petroleum is used to produce heating oil and petrol, etc. The voltage of electricity is adjusted through transformers so that it is able to be used for a variety of purposes (factories, trains, homes, etc.).