The present invention relates to a mushroom production process comprising the steps of preparing a mushroom growing shed with at least one bed of mushroom compost； supplying heat to the mushroom growing shed； harvesting the mushrooms； and removing the spent mushroom compost from the mushroom growing shed； wherein the process further comprises the steps of combusting the spent mushroom compost in an energy conversion system； harnessing the heat generated by combusting the spent mushroom compost； and using the harnessed heat to control temperature of the mushroom growing shed. In this way, the energy costs for the mushroom production are greatly reduced.
