The document discusses various forms of renewable energy, particularly focusing on hydroelectric power, which is expected to remain a key electricity source through 2030, especially in developing countries. It highlights the importance of wave energy and the operational mechanisms of hydroelectric plants, including the Three Gorges Dam and Hoover Dam as significant examples. Overall, hydroelectric energy is presented as a cost-effective and environmentally friendly alternative to conventional energy sources.

1. Renewable energy - water
Author: Oliwier Dawid

2.  According to the World
Energy Outlook from
2005, hydroelectric
power will remain an
important source of
electric power for the
first 30 years of the 21st
century. Although most
of hydropower
resources in OECD
countries are already
being exploited, growth
potential is estimated at
1.8% for the period 2003-
2030. Curiously,
developing countries
will be responsible for
most of the growth.

3.  Wave energy is the energy captured from the energy
of ocean surface waves and that it is used to do useful
work. Wave energy can be used not only of the
production of electricity, which is its most common
use, but for water pumping and water desalination as
well. Waves on the surface of oceans and seas are
produced by wind, which can be used for wind
energy.
Wave energy

5.  Hydroelectric Energy: Is the energy
produced from water falling, naturally or
man-driven, through turbines which
turn/cycle producing energy. Hydroelectric
energy has a lower cost than any other
form of renewable sources and in some
cases over conventional forms of energy
and this gives a clear benefit to the
consumer since it is free of C02 emissions.
HYDROELECTRIC ENERGY

7.  Hydropower plants capture the energy of
falling water to generate electricity.
A turbine converts the kinetic energy of
falling water into mechanical energy. Then
a generator converts the mechanical energy from
theturbine into electrical energy.
How water turbines work

8. How water turbines work

9.  With a massive generating capacity of 22.5 GW, the
Three Gorges Dam is the biggest hydro dam in the
world. China had begun dreaming up this dam in 1919,
and in 2008, it came alive. It’s a beast of a hydro dam
and is a marvel of modern engineering. It’s placed on
a Yangtze River
The biggest hydroelectric dams

11.  Hoover Dam is one of
the most iconic dams
around the world
stretching between
the American states
of Nevada and
Arizona. Originally
called the Boulder
dam, this colossal
structure stands at a
height of 221.4 m,
The most popular dams

12. Hydroelectric power plants in the
world

14.  Hydro dam in Włocławek- the largest water dam in
Poland. As a result of the construction of the power
plant on the Vistula, the Włocławek Dam was
established. Initially, it was to be part of the cascade
of the lower Vistula, but the remaining dams were
never built.
Renewable energy in Poland

16. Thanks for attention