Renewable energy

According to the exact meaning of the term, renewable energy should be produced from sources that are replenished while they are used. In practice, this is impossible, every source will exhaust one day. However, there are sources that are very large, thus, if used responsibly they might last without notable depletion. This coined the term of sustainable energy.

On human scale fossile energies are hardly renewable because it took millions of years for them to form, while we consume them whithin a few decades, or centuries at most. In contrast, solar, wind, hydro, and geothermal energy make use of very large reservoirs. Granted, one day the sun will stop shining, the earth will not revolve any more and its core becomes cold, but by then the human race will have altogether different problems...

For the time beeing we should try to make use of these renewable or sustainable forms of energy rather than consume fossile reservoirs without taking care of following generations.



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