Renewable energy is important
we need a clean world in the future…
We are a special team
from Turkey, Spain, Lithuania & Greece
There are many forms of renewable energy. Most of these forms of
renewable energy depend in one way or another on sunlight. Wind
and hydroelectric power are the direct result of differential heating
of the Earth's surface which leads to air moving about (wind) and
precipitation forming as the air is lifted. Solar energy is the direct
conversion of sunlightusing panels or collectors. Biomass energy
is stored sunlight contained in plants. Other renewable energies
that do not depend on sunlight are geothermal energy, which is a
result of radioactive decay in the crust combined with the original
heat of accreting the Earth,and tidal energy, which is a conversion
of gravitational energy.
If you think 100% renewable energy will never happen, think again.
Several countries have adopted ambitious plan to obtain their
power from renewable energy. These countries are not only
accelerating RE installations but are also integrating RE into their
existing infrastructure to reach a 100% RE mix.
Solar power can be used directly for heating and producing
electricity or indirectly via biomass, wind, ocean thermal, and
hydroelectric power. Energy from the gravitational field can be
harnessed by tidalpower; and the internal heat of the Earth can be
These tools and more can help make the transition from non-
renewable to renewable and environmentally friendly energy.
However, none of these is sufficiently developed or abundant
enough to substitute for fossil fuels use. Every one of these power
sources (with the exceptionof hydroelectric)has low environmental
costs,and combined have the potential to be important in avoiding
a monumentalcrisis when the fossil fuel crunch hits. These energy
sources are often non-centralized, leading to greater consumer
control and involvement.
installing solar panels on the metal roof
of the pool in Panorama-Thessaloniki-Greece
This form of energy relies on the nuclearfusion power from the core
of the Sun. This energy can be collected and converted in a few
different ways. The range is from solar water heating with solar
collectors or attic cooling with solar attic fans for domestic use to
the complex technologies of direct conversion of sunlight to
electrical energy using mirrors and boilers or photovoltaic cells.
Unfortunately these are currently insufficient to fully power our
The developmentof affordable,inexhaustible and clean solar energy
technologies will have huge longer-term benefits.
Advantages of Solar energy
- Zero pollution
- Zero cost productionof energy – minimal maintenance
- Silent operation
- Reliability and long life
- Inexhaustible and mostly import-independentresource,(It will
increase countries’ energy security)
- Keep fossilfuel prices lower than otherwise.
Disadvantages of Solar energy
- High construction cost
- Luck of subsidies
- Difficultyin storage
HYDROELECTRIC POWER – HYDROPOWER
A small hydroelectric project of Imathia-Greece
This form uses the gravitationalpotentialof elevated water that was
lifted from the oceans by sunlight. It is not strictly speaking
renewable since all reservoirs eventually fill up and require very
expensive excavation to become useful again. At this time, most of
the available locations for hydroelectric dams are already used in
the developed world.
Advantages of Hydroelectricenergy:
- Hydroelectric plants can function on demand whenever needed,unlike
the thermal plants which require a lot of preparation time.
- It is a "clean" and renewable source of energy with various benefits
(reduction in exchange, natural resources,protectionof the environment).
- Through the water reservoirs there is the possibilityto satisfy certain
needs such as water supply, irrigation halting torrents, creation of
wetlands, recreational and sports areas.
Disadvantages of Hydroelectricenergy:
- Big constructioncost for dams and installation of equipment as well as
the great amount of time needed to complete the project/ facilities
- The environmental distortion of the area where facilities are constructed
(including the geomorphology,animals and plants) as well as the
potential population movements,the degradation of areas, the required
changes of the use of land. In addition, in areas of big constructions great
changes in the microclimate and increase in the seismic rate have also
The movement of the atmosphere is driven by differences of
temperature at the Earth's surface due to varying temperatures of
the Earth's surface when litby sunlight.Wind energy can be used to
pump water or generate electricity, but requires extensive area
coverage to produce significant amounts of energy.
Advantages of Wind Energy:
- Wind energy can be produced again and again since it is available in
- It is the cleanest form of renewable energy.
- Reducesfossilfuels consumption.
- Wind energy has created many jobs for the local people,from
installation of wind turbines to maintenance of the area where turbines
Disadvantages of Wind Energy:
- The wind turbines may cause the wounding or even the death of birds.
- Too much noise of the machines
- Turbines may cause aesthetic pollution
- There is a need to cut down trees or generally to destroy a part of land
on which the venture will take place.
- Wind turbines are suited to the coastal regions or hilly areas which
receive wind throughout the year to generate power.
However, due to the technological advance and the stricter selectionof
the facilities location (e.g. floating platforms in the open sea) the
previously mentioned problems as well as the noise of the machine’s
operation have almost been solved.
In any case, an environmental impact study should precedethe
construction of the Aeolian park or any other facility of renewable energy
Geothermal energy is defined as heat from within the earth. The
adjective geothermaloriginatesfrom the Greek roots geo, meaning
earth, and thermos, meaning heat.
If the heated water within the earth does not reach the earth's
surface,it remains as underground concentrations of hot water and
steam,known as geothermalreservoirs.By tapping into geothermal
reservoirs, we can efficiently heat our homes and businesses and
even generate electricity.
Advantages of GeothermalEnergy:
- It has low cost and there is no need to use fuel to generate the
geothermal power, and because of this the purchasing, transporting and
cleaning of it will just require low cost.
- It cannot be affected by any kind of weather and it is not affectedby the
cycle of day and night and is not dependenton the light of the sun.
- It is more advantageous than the energy derived from coal because it is
much more cheaper.
- The energy is 100% clean and cannot cause global warming.
- Since it is a renewable source of energy it does not create any pollution
and harm to humans and to other species.
- It is used as direct heating of homes and offices.
- Exploitation of geothermal energy can create more jobs and
opportunities forthe local people.
Disadvantages of GeothermalEnergy:
- The installation of geothermal is not that easy, there is a need to hire a
certified installer and skilled workers to have the plant located. There is a
need to set up electricity towers and to get steam from the deep within
the earth. Because of this, the cost is very expensive and requires a long
time for investment.
- It is not suitable for all types of places;it is only appropriate for those
places which have a lot of rocks below and those that can produce
- It might release harmful and toxic gases that can be very harmful to
- The transportation of geothermal energy is not easy.
Biomass is biologicalmaterial derived from living,or recently living
Wood remains are the largestbiomass energysource today. In the
second sense,biomass includes plantor animal matter that can be
convertedinto fibers or other industrial chemicals,including
biofuels.Plant energyis producedby crops specifically grownfor
use as fuel that offer high biomass outputper hectare with low input
There is a greatdeal of research involving algalfuel or algae-
derived biomass due to the fact that it's a non-food resource and
can be produced atrates 5 to 10 times more than those of other
types of land-based agriculture,such as corn and soy.
Biofuels include a wide range of fuels which are derivedfrom
biomass.The term covers solid,liquid, and gaseousfuels.Liquid
biofuels include bioalcohols,such as bioethanol,and oils, such as
Advantages of Biomass:
We will always have the sources of biomass such as crops,manure
There is a balance between the amount of carbon that the biomass
fuel release into the atmosphere and the amount that they extract from
it. This is why biomass fuels do not contribute to global warming.
Biomass fuels are clean.
Energy harnessed from biomass is inexpensive compared to coal and
oil. Typically they cost about 1/3 less than fossilfuels doing the same
Biomass reduces the pressure on fossilfuels
Biomass is available in large quantities all over the world. Large
pipelines across country borders and oceans are therefore most likely
Biofuels do not require many changes in cars and other places of use
to be utilized.
Biofuels help to reduce carbon emissions by 50-60%.According to the
European Environment Agency, biofuels do not address global
Disadvantages of Biomass:
- Setting aside land for biofuels corps means less land for food
- Extraction of biomass can be expensive. In some areas we find that
biomass projects may not be worth the price and is therefore never
finished. This is also true for the harvesting and storing of the different
types of biomass.
English Greek Turkish Spanish Lithuanian
we care for our
we enhance our
biomass βιομάζα biyokütle Biomasa Biomasė
solar energy ηλιακή ενέργεια güneş enerjisi Energía solar Saulės energija
wind energy αιολική ενέργεια rüzgar enerjisi Energía eólica Vėjo energija
Mini wind turbine
This mini wind turbine was made by our student
Vasilis Kitsopoulos (and his talented father)
from Greece. This wind turbine converts the wind
power into electricity and lights up 3 small bulbs.
The photos below are from the Lithuanian team.
They’ve created and
played a song about
nature and ecology.
It’s a shame that not all of us
take care of nature and destroy it.
Let’s recycle garbage, clean streets and
Let’s build up the solar collectors.
Let’s free nature
Furthermore, they put up a lot of creative activities
from recycled materials.
The video below is made by the eTwinning team from
They’ve created and played a song
about Renewable Energy.
…Renewable Energy is changing our world…
RENEWABLE ENERGY PROJECT SONG
Renewable this is quality label
I’m telling you with different syllables
Solar, wind and geothermal energy
If you don’t use this in emergency
Global warming effects in our World
Fuel oil wastes is toxic, technical
Technical information says life natural
Recycling is solving environmental problems
Hurry up! Awake and listen to me carefully
Energy is saving your country (country)
Electric will produce easily in earthquake
Awake you awake other people in the world
Keep in mind yes this is our nature
Creative Project and Ι introduce you
Save your world because this our culture
You leave a new healthy generation
Renewable energy is saving our world,
renewable energy is changing our world ( x4)
lyrics: Serdar Kurt (student)
music: Serdar Kurt (student)
quitar: Yusuf Özer (student)
made for RENEWABLE ENERGY
How many things do you know
about renewable energy?
in four Greek videos
about RENEWABLE ENERGY
These videos belong to the educational material of the
Photodentro/Educational Video (Digital school),
which is the Greek Educational Video Repository
for primary and secondary education.
COUNTRY SCHOOL TEACHERS
1st Junior High
IES Virgen de la
Marta Mª Sesma Berhó
T.C. MİLLÎ EĞİTİM
ÇORUM - MERKEZ
- ÇORUM FEN