Our research is trying to find alternative source of energy to solve these both problems environmental pollution and energy shortage. Cultivation of microalgae and extraction Biodiesel from it can be a great source for clean energy it is also cheap and algae sucks (co2) during growth so it’s environment cleaner. Extraction Biodiesel from algae by being compressed by our device (Exgester) which has been modified to use biomass to extract biogas and Natural fertilizer based on the principle of anaerobic fermentation of organic materials. Exgesteralso purifies the biogas to separate it from acid gases and increase the heating value of CH4. Finally the outcomes from this project by cultivating about 3%-8% from Egypt desert we will not need diesel from petroleum.