Question: where does electricity come from?

Ruth Elderfield answered on 17 Jun 2015:

Electricity is the movement of electrons (negative charges). So if you create a negative charge and give it something to flow through (like copper wire that allows negative electrons to move easily) you will create electricity.
We can make electricity from burning fuel, wind power and even wave power, we take the energy from them, use it to drive turbines (which are like windmills), which feed into generators. Now it gets a bit complicated, the generators use this energy to make magnetic fields which in turn makes the negative electrons in the copper wire flow, which as we learnt at the start is electricity.
This a biologist’s answer an engineer of physicist may explain it a bit better.