An energy collection apparatus includes an upper body and a lower body. The upper body has a first storage compartment, and is arranged to connect to an external energy generator. The lower body downwardly extends from the upper body, and has a second storage compartment. The energy collection apparatus is securely supported in a deep sea level above seabed so that when sea water enters the first storage compartment and the second storage compartment, geothermal energy and pressure difference between the sea water in the first storage compartment and the second storage compartment create upthrust steam at a top portion of the first storage compartment, the upthrust steam being guided to reach the external energy generator for further use.