MAIN SOURCES OF ENERGY

R E N N E O W N A B L E

TYPES OF ENERGY ADVANTAGES DISADVANTAGES

FOSSIL FUELS

• It is an easy and a regular way of producing energy. • It is not so expensive to build power plants.

• They will run out one day. • It pollutes a lot; it emits greenhouse gases, acid rain and it pollutes rivers and lakes.

NUCLEAR

• It produces a great amount of energy. • It neither produces acid rain nor greenhouse gases.

• It can cause serious damages and accidents. • It’s very difficult and dangerous to keep radioactive waste. • The facilities are very expensive.

R E N E W A B L E

HYDRAULIC

• It’s free. • It’s easy to keep. • It’s clean. • The reservoirs regulate the flow of the rivers.

• The facilities are very expensive. • The water supply is irregular. • The reservoirs produce environmental alterations (e. g. in landscapes). • Heat waves can limit the quantity of this type of energy.

WIND

• It’s clean and free. • It won’t run out. • There are very few safety risks with wind turbines. • It’s a quick way of producing mechanical energy.

• The power generators are very expensive. • It’s production is not regular. • It’s very noisy and it can cause a negative visual impact on landscapes.

SOLAR

• It’s free. • It’s clean, it doesn’t pollute. • The sun will always be there during our lifetime, so this type of energy won’t run out.

• A great amount of land is needed. • The facilities are very expensive. • Its production is discontinuous. • Environmental impact due to solar panels.

BIOMASS

• It reduces waste • It creates little rubbish.

• It pollutes since it produces C02. • It’s limited. • It takes a long time to be created. • Many trees are cutting down.

GEOTHERMAL

• It’s clean: it doesn’t produce big amounts of waste. • It’s quite regular. • It’s practically endless.

• Advanced and very expensive technological devices are needed. • It’s very expensive. • It deteriorates the landscape and the ecosystem. • It cannot be transported.

SOLID URBAN WASTE • It reduces waste.

• It pollutes. • It generates poisonous/ toxic products and release heavy metals.

TIDAL ENERGY • Tides are free and will not run out. • It doesn’t pollute. • It’s noiseless/ it’s a quiet type of energy.

• It has a negative impact on the landscape, flora and fauna.

WAVE ENERGY

• It’s clean and free. • Wave power does not produce greenhouse gases.

• The facilities and the equipment are very expensive. • Electricity production depends on the wave speed, height and length.