This document discusses hydroelectric power and its various forms. It begins by defining hydropower and hydroelectricity, noting that hydropower harnesses the energy of falling or running water and has been used for centuries. Hydroelectricity specifically refers to electricity generated through hydropower. It accounts for 16% of global electricity production. The document also lists advantages like being renewable and producing no waste, and disadvantages such as high costs and environmental impacts of dam construction. It concludes by describing the largest hydroelectric plants in the world and Poland, as well as the main types of hydroelectric facilities.

1. Water Energy
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2. Hydropower
• Hydropower or water power is power derived from
the energy of falling water or running water, which
may be harnessed for useful purposes. Since ancient
times, hydropower from many kinds of watermills has
been used as arenewable energy source
for irrigation and the operation of various mechanical
devices, such as gristmills, sawmills, textile mills,trip
hammers, dock cranes, domestic lifts, and ore mills.
A trompe, which produces compressed air from
falling water, is sometimes used to power other
machinery at a distance.

3. Hydroelectricity
• Hydroelectricity is the term referring
to electricity generated by hydropower; the
production of electrical power through the use
of the gravitational force of falling or flowing
water. It is the most widely used form
of renewable energy, accounting for 16
percent of global electricity generation –
3,427 terawatt-hours of electricity production in
2010, and is expected to increase about 3.1%
each year for the next 25 years.

4. Advantages of Hydroelectricity
• Hydroelectricity does not "use" water, all of the
water is returned to its source of origin.
Hydroelectric power can be created 24/7
indefinitely assuming that the body of water it is
utilizing never runs dry. It is also another
absolutely clean source of energy. The power
plants, once in place, do not create any waste
byproducts in their conversion. Dams constructed
can also shut their gates and conserve the water
for use when power is in higher demand.

5. Disadvantages of
Hydroelectricity
• Like all power plants, hydroelectric plants are very
expensive to build, and must be built to a very high
standard. The high cost means that plants must operate for
a long time to become profitable. The creation of dams can
also create flooding of land, which means natural
envrionment and the natural habitat of animals, and even
people, may be destroyed.

6. • The building of dams for hydroelectric
power can also cause a lot of water
access problems. The creation of a dam
in one location may mean that those
down river no longer have control of
water flow. This can create controversy
in places where neighboring countries
share a water supply.

7. The largest hydroelectric power
plant in Poland
• Żarnowiec

8. The biggest hydroelectric power plant
in the world
The Three Gorges Dam in Hubei, China, has the world's largest
instantaneous generating capacity (22,500 MW), with theItaipu
Dam in Brazil/Paraguay in second place (14,000 MW). Despite
large differences in installed capacity of these two power stations,
during the course of an entire year they generate equal amounts
of electrical energy - Itaipu 98.2 TWh in 2012[1]
and Three Gorges
98.1 TWh in 2012,[2]
because the Three Gorges experiences six
months per year when there is very little water available to
generate power, while the Paraná River that feeds the Itaipu has a
much lower seasonal variance in flow. Power output of The Three
Gorges reaches 125 TWh in years of high feed availability.

9. TYPES OF
HYDROPOWER
PLANTS :

10. IMPOUNDMENT
• The most common type of hydroelectric
power plant is an impoundment facility. An
impoundment facility, typically a large
hydropower system, uses a dam to store river
water in a reservoir. Water released from the
reservoir flows through a turbine, spinning it,
which in turn activates a generator to produce
electricity. The water may be released either
to meet changing electricity needs or to
maintain a constant reservoir level.

12. DIVERSION
• A diversion, sometimes called run-of-
river, facility channels a portion of a
river through a canal or penstock. It
may not require the use of a dam.

14. MICRO HYDROPOWER
• A micro hydropower plant has a
capacity of up to 100 kilowatts. A small
or micro-hydroelectric power system
can produce enough electricity for a
home, farm, ranch, or village.

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