To generate and deliver energy we need raw materials. To produce materials we need energy. There is a clear connection.
For example, windmills contain a lot of copper. Overhead power lines which transport this electricity are made out of copper. The wiring in our houses is made out of copper. Anything that you connect to this wiring by plugging it into a power socket contains a lot of copper. Copper is required for energy!
The same goes for the other metals. Iron, aluminium and alloy metals are needed for drilling, mining and tankers; special metals are required for batteries; cadmium, gallium and tellurium are needed for solar panels; and uranium is needed for nuclear power.
It costs a lot of energy to get the copper ore out of the earth, subsequently it takes a lot of energy to make copper out of copper ore and then it will cost a lot of energy to shape copper into the form you want it to take. Energy is required for copper!