The trophic level with the most energy in a healthy ecosystem is the producers (also called primary producers), such as plants, algae, and photosynthetic bacteria.

Quick Scoop: Why producers have the most energy

  • Energy in almost all ecosystems enters as sunlight and is first captured by producers through photosynthesis.
  • Only about 10% of the energy at one trophic level makes it to the next level up, so energy decreases sharply as you go from producers → primary consumers → secondary consumers → tertiary consumers.
  • Because of this “10% rule,” the energy pyramid is widest at the base: producers hold the largest total amount of usable energy in a healthy ecosystem.

Mini breakdown of trophic levels

  • Producers (plants, algae, some bacteria): capture solar energy and form the base of the food chain.
  • Primary consumers: herbivores that eat producers, but receive only a fraction of the producers’ energy.
  • Secondary and tertiary consumers: carnivores and top predators with even less available energy overall.

So, in a healthy ecosystem, the producers should have the most energy, supporting all the levels above them.

TL;DR: In a healthy ecosystem, the base of the energy pyramid—producers—must contain the most energy so that all higher trophic levels can survive.

Information gathered from public forums or data available on the internet and portrayed here.