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Artificial dam reservoirs for eco-friendly energy supply
In the mountains the electrical energy is mostly supplied by dam reservoirs. So why dont build artificial dam reservoirs in flat countries? it would be a high initial investment like a nuclear reactor, except that no danger and toxic waste is created, which will cost a lot of money in the next decades.
additionally, these artificial hills could be a regeneration area for families, a biotopic area for animals and plants.
These artificial dam reservoirs could also be used as a energy storage (pumped storage power station) for highly fluctuating energy sources like wind and solar (storing the energy for the night / winter).
another idea: every house has his own energy hill. or use the house, construct them strong or make a framework and put a tank on top of the houses to collect water and create electricity with small generators. a network / smart grid could be build where electricity is distributed / sold / and stored (storage of the private house could be sold like data storage today in the cloud / ebay for energy storage) automatically according to the actual demand.