Have you ever watched a space shuttle launch? The fuel used to thrust these enormous structures away from Earth’s gravitational pull is hydrogen. Hydrogen also holds potential as a source of energy for our daily activities – driving, heating our houses, and maybe more.
Low energy efficiency is already a major problem for petrol and diesel vehicles. Typically, only 20% of the overall well-to-wheel energy is actually used to power these vehicles. The other 80% is lost through oil extraction, refinement, transport, evaporation, and engine heat. This low energy efficiency is the primary reason why fossil fuel vehicles are emissions-intensive, and relatively expensive to run.