The answer is Energy Pyramid. The energy pyramid is a graphical model of energy flow in a community. The different levels represents different groups of organisms that might compose a food chain. From the bottom-up, they are as follows; Producers- bring energy from nonliving sources into the community, primary consumers eat the producers, which makes them herbivores in most communities, secondary consumers eat the primary consumers, which makes them carnivores and tertiary consumers eat the secondary consumers.
The energy pyramid indicates the energetic magnitude of trophic interactions in a community. It is the most complex of the three types of ecological pyramids and includes information on primary and secondary production. In other words, we can say that this type of pyramid graphically shows the energy that is available at each trophic level of a food chain.
The flow of energy through the food chain decreases towards the higher trophic levels. Thus, the energy decreases from the bottom to the top, because part of the energy is incorporated by each trophic level and another part dissipated as heat.
Therefore, the shorter the food chain, the more energy will be harnessed.
The energy pyramid will never be inverted. Producers will always be on the first and highest level because they store the most energy.