The Coal Question - Energy Alternatives

Energy Alternatives

Jevons considered the feasibility of alternative energy sources, foreshadowing modern debates on the subject. Regarding wind and tidal forces, he explained that such sources of intermittent power could be made more useful if the energy were stored, for example by pumping water to a height for subsequent use as hydro power. He reviewed biomass, namely timber, and commented that forests covering all of the UK could not supply energy equal to the current coal production. He also mentioned possibilities for geothermal and solar power, pointing out that if these sources did become useful, the UK would lose its competitive advantages in global industry. He was not aware of the future importance of natural gas or petroleum as prime energy sources since they were developed after his book was published.

Regarding electricity, which he pointed out was not an energy source but a means of energy distribution, Jevons noted that hydroelectric power was feasible but that reservoirs would face the problem of silt build-up. He discounted hydrogen generation as a means of electricity storage and distribution, calculating that the energy density of hydrogen would never make it practical. He predicted that steam would remain the most efficient means of generating electricity.