4256600
Environment - renewable
energy sources
- Solar engery
- Pros
- it's safe
- it's renewable
- it's clean >> free of pollution, waste and noise
- can be used in every household
- needs less area than coal plants
- it's safe
- Cons
- much higher
costs (compared
to fossil fuels)
- In winter
the suntime
is too small
- much higher
costs (compared
to fossil fuels)
- Pros
- Wind
- Pros
- eco-friendly/ environmentally friendly
- low frequency noise
- a safe method without side effects
- the turbines have no effect on animals
- doesn't harm the production on the field
- eco-friendly/ environmentally friendly
- Cons
- not always available >> it's not always windy
- wind turbines may have a negative
effect on wild bird populations
- high capital costs (Investitionskosten)
- not always available >> it's not always windy
- Pros
- Biomass
- How it works
- Biomass energy is created by organic matter. It's formed
when the sun shines on plants and trees.
- Main source = wood
- waste from industries and cities are also used
- waste from industries and cities are also used
- Biogas / methane is produced from the decomposition
(Zersetung) of biomass and sewage (Abwasser)
- Biomass energy is created by organic matter. It's formed
when the sun shines on plants and trees.
- Pros
- using waste materials reduces the impact on the environment
- Fuel tends to be cheap
- less demand (Nachfrage) on the Earth's resources
- using waste materials reduces the impact on the environment
- Cons
- Collecting the waste in sufficient quantities
(ausreichende Mengen) can be difficult
- Fuel is still being burnt >> still generating
greenhouse gases
- Collecting the waste in sufficient quantities
(ausreichende Mengen) can be difficult
- How it works
- Tidal
- Pros
- doesn't have a large environmental impact
- predictable
- no atmosphere waste
- needs no fuel
- not expensive to maintain
- doesn't have a large environmental impact
- Cons
- expensive to build
- affects a huge area
- only provides power for about 10 hours per day
- many birds rely on the tide uncovering the mut flats to eat
- expensive to build
- Pros
- Geothermal
- How it works
- Underground hot rocks heat up water >>
steam and hot water are recovered. The
steam is accessed through drilling and
used to run turbines and generators.
- Underground hot rocks heat up water >>
steam and hot water are recovered. The
steam is accessed through drilling and
used to run turbines and generators.
- Pros
- Doesn't pollute the earth
- doesn't contribute to the greenhouse effect
- No fuel is needed
- Energy which may be needed can be taken
from the energy being generated
- Doesn't pollute the earth
- Cons
- There aren't many
places where a
geothermal plant can
be built
- geothermal site may run out
of steam for decades
- dangerous gases and minerals may
come up from the underground >>
difficult to dispose of
- There aren't many
places where a
geothermal plant can
be built
- How it works
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