The energy in the atoms came from the nuclear reactions in the heart of the Sun. What started the nuclear reactions? Physicists think the Big Bang did. So the short answer is that the energy we encounter and use everyday has always been with us since the beginning of the universe and always will be with us.

What was the first source of energy?

The first source of energy was the sun, as it provided heat and light during the day.

Will we run out of energy?

So yes, we will run out of electricity if we continue to rely on the burning of fossil fuels to drive transportation, power our personal energy devices, control the temperature of our homes, or run our industries. … First, we are increasingly turning to renewables such as solar and wind for our growing electricity needs.