Presentation made by students from Prienai ‘Žiburys’ gymnasium in Lituania

1. Solar energy
Prienai ‘Žiburys’ gymnasium

2. What is solar power?
 Solar power is energy from the sun and without its presence all
life on the Earth would end.
 Solar power is produced by collecting sunlight and converting it
into electricity.
 According to scientists, it is the most powerful energy source on
the Earth.
 European Renewable Energy Council (EREC) predicts that by 2040
the world's largest share - 27.4 percent of all electricity will be
generated by solar power. They predict that even after 30 years,
82 percent of all electricity will be produced from various
renewable sources, mainly solar and wind.

3. Electricity generation
There are two ways to use solar energy to generate electricity:
 Photovoltaic technology (PV)
 Concentrating solar thermal technology (CST)

4. Photovoltaic technology
PV converts sunlight directly into electricity. The sun illuminates
the solar cells, which convert the energy from the sunlight into
electricity. The electricity goes into an inverter and into the power
lines to your home. However, solar panels are only effective
during daylight hours because storing electricity is not a
particularly efficient process

5. Photovoltaic power plants
82 MW Senftenberg Solar park, Germany 80 MW Solar park Finsterwalde I,II,III, Germany

6. Photovoltaic power plants
70 MW Rovigo PV power plant, Italy 84 MW Montalto di Castro PV power plant, Italy

7. Photovoltaic power plants
Solar park Gabardan in France (44 MW) Solar farm Les Mées in France (31MW)

8. Advantages of using solar power
 Energy is free
 Energy is independent. Solar batteries
equipment lets us become
independent from General Electric
Networks and save money.
 Energy is ecological. Solar batteries
don’t pollute environment because
their materials are clear and recycled
easily.
 Energy is longevous (long term used).
 Solar cells can be installed in all the
objects that use electricity.

9. Disadvantages of using solar power
 A large number of panels may be
necessary to produce sufficient
amounts of heat or electricity,
requiring a significant financial
investment.
 Parts of the world that don't
receive large amounts of sunlight
are not well-suited to the
generation of this type of power.
 Solar panels cannot be used to
generate power at night and the
production of power may be
impaired when there is significant
cloud cover.

10. Use of solar power
 Measuring Stations  TV and radio
transmitters and
amplifiers

11. Use of solar power
Control devices  Railway
Traffic

12. Use of solar power
 Telemetry  Calculators

13. Use of solar power
 Satellite, space  Bicycles
stations

14. Use of solar power
 Power stations  Buildings, their
heating, light and
constructions.

15. Solar power innovations. Solar cars
 Solar cars produce energy
from the sun converting it
into electricity. That electricity
fills the battery that runs the
car's motor. Instead of using a
battery, some solar cars direct
the power straight to
an electric motor. Solar cars
can get this energy
through photovoltaic cells
(PVC).

16. Lunokhod
 Solar panels are used in
creation of lunokhods. Usually
high-efficiency photovoltaic
(PV) cells are located on top
of the lunokhods, they charge
the batteries so that
lunokhods can move.

17. Space stations
 Double-sided solar, or
photovoltaic arrays, provide
electrical power for the space
stations. These bifacial cells
are more efficient and operate
at a lower temperature than
single-sided cells commonly
used on Earth, by collecting
sunlight on one side and light
reflected off the Earth on the
other.

18. Solar powered containers and backpacks
 Solar powered containers handle
garbage more efficiently by
periodically compacting the
trash inside, creating space for
more garbage.
 A solar powered backpack is a
green gadget. The photovoltaic
panels in a solar powered
backpack collect energy from
the sun to power a variety of
electronic devices, including
laptops, cell phones and music
players.

19. Solar windows
 The window lets in less light,
while still being transparent,
so buildings get needed shade
during hot sunny hours,
reducing their air conditioning
use and making the building
more energy-efficient. At the
same time, the panels
produce solar power, which
the building can use for
electricity.

20. Solar powered gadgets
 The companies Apple and
Samsung are already planning to
offer gadgets that are charged by
solar energy.
 Engineers created solar powered
yacht Turanor fitted with 536
square meters of photovoltaic
panels, which has successfully
sailed halfway around the world.
 In Switzerland was created first
solar-powered glider (airplane)
„Solar Impulse“.