Abstract: The present invention relates to a mobile power generation system and method of constructing the system. The mobile power generation system includes a power generation module configured to generate and transmit electricity, a mobile module configured to be movable and to allow the power generation module to be assembled therein, an additional module configured to protect the mobile module against external physical shocks and fix the mobile module at a designated location, and a site configured to allow the mobile module to be fixed therein. The present invention is advantageous in that mobile power generation facilities are modularized and produced in a technically-intensive manner, the construction time and expenses thereof are decreased, existing sites are reused, and the mobile power generation facilities are safely protected against physical shocks such as earthquakes because they are moved and float through a mobile module.