Clean Energy Private Limited
The world energy demand is increasing due to population
growth and to rising living standards. World population
in doubling about every thirty-five years, though the rate
of growth is very different in different countries. The
world energy use is doubling every fourteen years and the
need is increasing faster still. One of the main energy
sources is oil and the rate of production is expected to
peak in the next few years. There are still plentiful supplies
of coal, the other principal energy source, but it is even
more seriously polluting than oil, leading to acid rain
and climate change. This combination of increasing need
and diminishing supply constitutes the energy crisis. The
world urgently needs a clean energy source that is able
to meet world energy needs.
This is without doubt the most serious problem facing mankind.
If we simply let things take their course, the world is
heading for a catastrophe during the present century. To
see what can be done about it, all possible energy sources
have to be critically examined and their potential evaluated.
Before considering the various energy sources in detail
it is useful to list some of the difficulties in doing so.
These arise partly from the complicated nature of the subject,
which involves a range of scientific and technological specialities,
and partly from the fierce political debates that surround
The only way to assess the various criteria is to express
them numerically as far as possible. Without the numbers
it is all just a matter of words spiced with emotion, and
it is never possible to reach an objective decision. These
numbers seldom have the precision of scientific measurements,
and some of them are inherently imprecise but it is better
to have approximate numbers rather than no numbers at all.
It is important to distinguish between precise measurements,
reasonable estimates, guesses, commercial or political propaganda,
The speculations can be plausible and in accord with known
scientific laws, or in contradiction to such laws. A further
complication is that new scientific data often alter the
picture; this is notably the case for climate change. The
people providing the information can be completely objective,
or they can be strongly influenced by commercial and political
The criteria used to assess the various energy sources
are their capacity, reliability, cost, safety, and effects
on the environment. No single source satisfies all these
criteria so an energy mix is essential for each country.
The optimum energy mix depends on the natural resources
of that country, and so there is no general solution; each
country must be considered separately.