You only need look to the source of ALL our energy, Sol.
Whether we harvest it in realtime with solar panels or wait million of years for photosynthetic residue to turn into oil and gas we can burn,the Sun is the source of all energy.
Except for the giant nuclear decay engine under our feet that keeps the core of the earth molten.
Yup old Sol suppying endless E in Einstein’s E=mc2 to produce plant mc2 via photosynthesis.