Hydro energy, also called hydro power, means transforming
water movement into more beneficial form for humans. Its benefits are its
exhaustless, low costs, great adjustability and domesticity. The proportion of
hydro power of all energy forms is only 2% but on electricity generation it is
20%.
The best opportunities for using hydro power are on
mountainous areas and on areas with plentiful raining. Hydro power is mostly used
in Norway, alpine countries and Canada, where it plays a significant part in
electricity production. There are also hydroelectric plants on the big rivers
in developing countries. In Finland we can hardly increase the proportion of
hydro power in the production of energy because the rivers suitable for power
production have mainly been harvested by dams already.
Even though hydro power is pure energy, it causes
environmental harms. For example, under rationing tanks, there remains a lot of
ground, even entire villages. The water level and shoreline of rationed
waterways change repeatedly so rationing has an affect also on shore
vegetation. Dams also block the access of migration fish to spawning places.
These cons can be softened by building fish roads.
Hydro power is easily adjusted so in Finland the brief
control of electricity is accomplished mostly by hydro power. By brief control
we mean adjusting electricity production to daily or weekly consumption.
Made by Mona, Muusa, Madleena
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