1.lightning and the sun
2.the sun and Earth’s interior
3.the sun and wind
4.Earth’s interior and wind
2. Those 2 cause all the other sources of power on the planet.
The sun and the Earth’s interior. The energy causing wind and lightning come from these sources, mostly uneven heating of the earth by the sun.
How are you defining “Earth System?”
Because 2, 3 and 4 are all decent sources of energy. Solar, geothermal, and wind power.