That water is then released through tunnels to generate hydro electric power at times when consumers need it.
There is also a need to develop as yet absent resources including electricity through hydro electric generation or possible wind generation.
Scottish and Southern Energy Renewables has applied to build Scotland's biggest ever hydro electric scheme at the west end of the Great Glen.
"Hydro electric schemes, which use impounded water to generate electricity, are an excellent means of energy storage, " said SSE Renewables managing director Jim Smith.
Scottish Hydro Electric (SHE) said work could potentially start this year.
Scottish Hydro Electric Power Distribution (SHEPD) has organised eight mobile hot food outlets in Argyll and Arran, while 18 large generators and 50 smaller sets have been installed in the areas.
Relations between the countries have deteriorated over a hydro-electric dam that Tajikistan is building.
The organisation said its own studies suggested a hydro-electric scheme at Castlefields weir was financially viable.
Israel has expressed interest in investing in such unobjectionable concerns as agriculture and hydro-electric power.
The most notable casualty is the massive hydro-electric Bakun Dam in East Malaysia's Sarawak state.
Work has started to install a turbine at a community hydro-electric project after bad weather caused delays.
At the time, Brazil was 93% dependent on hydro-electric power and a drought had left many reservoirs very low.
Rains have replenished Brazil's hydro-electric dams, allowing the government to stop rationing energy.
There is not enough of it in the reservoirs banking the three hydro-electric dams that supply Kabul with power.
Therefore there is no wonder the numerous hydro-electric projects in India cannot supply their intended power for the country.
FORBES: What Investors Need To Know About Clean Tech In India
Cornwall can already produce more than 80 megawatts (MW) of electricity from wind, hydro-electric, solar and other renewable energy sources.
BBC: Roscrow wind farm tests strain of green energy on power grid
And if all fossil-fuel power plants were converted to nuclear or hydro-electric power, a 35% reduction in emissions would result.
For example, Latvia operates two major hydro-electric plants on the Daugava River which provide only half of Latvia's electricity needs.
In 2007 the Brazil government gave an initial go-ahead for the construction of two hydro-electric dams on the Amazon's longest tributary.
Meanwhile, rebels have reportedly seized control of Syria's largest hydro-electric dam, in what would be a strategic loss to the government.
It is then released through a number of turbines to generate electricity in the same way as hydro-electric power plants work.
BBC: NEWS | UK | Wales | South West Wales | Wave power plan for Welsh coast
Scottish Hydro-Electric Transmission Limited (SHETL), a subsidiary of Scottish and Southern Energy (SSE), put plans for the interconnector on hold last year.
There is political agreement for a giant hydro-electric scheme to be paid for by Turkey in south-east Bulgaria, which would export electricity to Istanbul.
The first hydro-electric power station was set up in Mysore in 1902.
Few other countries that depend heavily on hydro-electric power, which in turn depends on unpredictable rainfall, have so far dared to liberalise.
Restoring the water-retaining capacity of hydro-electric dams by regular dredging and sand and silt removal is the only way left before the authorities.
FORBES: What Investors Need To Know About Clean Tech In India
The Energy and Climate Change Committee (at 9.15am) has a session on the pros and cons of a hydro-electric power barrage across the River Severn.
Two huge hydro-electric power schemes, on Lake Cahora Bassa in Mozambique and in the Lesotho mountains, which will zap electricity across the region, are also being built.
Environmental groups like Greenpeace and Friends of the Earth would like to see a switch to renewable and clean sources of energy such as solar, wind and hydro-electric power.
BBC: Impact of global warming may be severe and wide-ranging
Lithuania also has several hydro-electric plants in Kaunas along the Neman River and a diesel-oil fueled electricity plant tied into the northwest region of electrical production for the Soviet Union.
应用推荐