The energy in this system is needed in the producers and consumers, the plants and the elephants need the energy to live. The plants, like the Balanite tree, get energy from the sun and uses photosynthesis to convert the light energy into chemical energy that it uses to carry out its processes.
The elephant eats the tree and uses its energy to carry out its own processes. They need this energy so that they can move, reproduce, make proteins, go through their cellular processes because, without energy, organisms cannot do any of these things which need to occur in order for organisms to be alive.
African Elephants 