Musk’s sustainable energy plan Outspoken business magnate Elon Musk believes the world can be converted entirely to clean energy in 20 years, at a cost of $10 trillion – $4 trillion less than remaining on fossil fuels COST OF TESLA’S 20-YEAR PROPOSAL Wind turbines $21bn Heat pumps $60bn Thermal power $99bn Solar panels $424bn E-chemicals $510bn Hydrogen storage $725bn Synthetic fuels $1,090bn Electrolysers $1,155bn Vehicles $1,780bn Batteries $2,229bn Mining/refining $2,329bn TOTAL $10.42tn Elon musk COST COMPARISON Coal $2tn Natural gas $6tn Oil $6tn Tesla’s green plan $10 trillion 20-year cost: 0.5% of global economy Sources: Bloomberg, Tesla Pictures: Getty Images, Earth 3D © GRAPHIC NEWS