Solar energy can solve many energetic problems (to produce electric power with solar panels or, directly, hot water for domestic uses), but NOT ALONE. It must be used together its "sisters": WIND and GEOTHERMIC.

Infact, solar energy is diffuse and abundant, but not easy to concentrate, given that solar panels must cover wide land areas (easy to do it in deserts) to give a high energy contribution. Despite this, solar panels can be installed on the roofs of private or public buildings (houses, industries, hangars, docks, schools, hospitals,…)

Moreover, it can’t be used with efficience in polar and sub-polar regions, where solar light on Earth surface is scarce.

So, just here, is the WIND that can be employed, considering that these cold regions are very windy during all periods of the year. The only problems for eolic generators could be that of a certain manutention against freezing and mechanic stress in the rotating mechanisms, but it’s possible to remedy with a bit of organization.

The 3rd "sister" is GOTHERMIC energy. It exploits the natural heat of hot water or vapour underground sources, heated by volcanic phenomena (presence of magma) active near the water.

Water can be more…