What Stores the Most Energy: A Deep Dive into Energy Storage Technologies
                                
                                
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                                    5 min read                                
                            
                                The energy released by a single kilogram of uranium-235 is equivalent to the energy from 3 million kilograms of coal, demonstrating that nuclear fission technically stores the most energy on a mass basis. This incredible difference in energy density across various sources brings to light the multifaceted question of what stores the most energy and for what purpose.