1. Author: Violetta Surgutova
Form 8.a

2. Solar cell is an electrical device that converts
the energy of light directly into electricity by
the photovoltaic effect.

3. Solar panels are made up of a set of solar
cells, that directly convert solar energy
into electricity.

4. Here is an image which will help you
understand some basic terminology
better.

6.  My family mostly spends income on electricity
and so I am interested in alternative energy
sources

7.  A year my family spends 2500 kW of energy.
 According to the calculations 3 kW solar
system panel produces 2850kW a year.

8.  To ensure this we must buy 12 panels that
cover an area of 20 square meters. We would
spend 4000Ls (5700 euros)

9. Solar cells are often found :

11. Solar cells
The solar cell creation for the first time is
credited to Charles Fritts, who used
junctions that were created when the
semiconductor was coated by a very thin
layer of gold.

12.  Flat SC:

14. Solar cells in Latvia
Latvian solar panels can be used in places
where there is no connection to the
power grid - a farm or a summer home.

15. Solar battery proved themselves in space
as stable source of energy that can run
for a very long time.

16. I would like to have a solar cell in my
village. I have a private house,so I could
make the roof of them. I would save a lot
of electrical energy and a lot of money.
It would look like this

17. The experts say that the panels should be
placed on the roofs of buildings in the :
•southern,
• western,
•eastern side.

18.  Solar panels are tested in the field for many
installations. Practice has shown that the
service life of solar panels over 20 years.

19.  Solar panels can be placed on any roof
 They do not harm the nature
 It is possible to store electricity in batteries
 This energy is inexpensive
 It reduces the cost of electricity bills.

20. To understand this, we should know that light
is composed of a number of small energy-
containing particles – photons.

21.  Solar panels consist of several cells, which are
made of silicon.

22.  When light photons are absorbed in the cell,
the energy of the electrons released.

23.  Next, the electrons pass through the cells of
the adverse party, and leave further to the
attached driver. This flow of electrons is
called electricity.

24.  Young people who participate in the race
Latvian "Solar Cup", manufactured car models
with solar panels, which contribute to
students' understanding of the fact that solar
energy can and should be used.

25. Solar cells will be used a lot more in the future than now. The solar
panels will be constructed for boats, motorcycles and even an entire
city will be formed on solar cells
They will look like this :

26.  Solar energy is also available in Latvia!
 Sun will never appears on the bill of energy
consumption.

27.  Short-term thinking and making decisions
according to the slogan " lower costtoday is
better than benefits in the future ".
 At present, we are very slowly mooving
towars «sunny» future energy In Latvia

28.  Lack of research & development &
production phase