2. 1.0 Contents
Why Green Energy
Types of Green Energy
3. 1.2 INTRODUCTION
Energy that comes from nature
Any type of energy that has negligible
impact on the greenhouse gas emission.
Energy that is renewable.
4. 1.3 WHY GREEN ENERGY
Fossil fuel is limited
Fossil fuel creates great amount of greenhouse gases
Except coal the other options are expensive
Green energy is natural and renewable
Its free because its natural
It does not produce harmful gases.
5. 1.4 TYPES OF GREEN ENERGY
The biggest source of renewable energy
used around the world
Almost 21% of world energy is produced
by this (2000)
Build on special sites
Water storage needs lots of area so people
and environment can be affected.
6. CONTINUE ……
232 GW produced through solar (2015)
There are two ways energy is produced through solar
sunlight is concentrated at one place to make steam.
special panels used that turns light
into electricity. Substance used are
gallium arsenide, crystalline silicon
and amorphous silicon
Second most popular source of green power.
17,500 MW worldwide (2000)
Can be installed only in specific areas (windy areas)
Are complicated to design ( aerodynamics)
two types of wind turbine.
Vertical axis: spins on wind
From every direction.
Horizontal axis: spins on
Only one direction.
Plant matter, trees, grasses,
agricultural crops or other
When the rots or decomposes
they release burnable gases.
14,000 MW of annual
The U.S. is the largest
biomass generator in the
world with 7,000 MW.
Tides caused by moon in ocean are
used to drive underwater blades .
Tides are more predictive than solar
and wind. Happens twice a day
Huge potential because of the ocean
A tidal barrage power station in
France has 240 MW of capacity; its
typical output is 0.5 terawatt-hour
Tidal energy uses the
gravitational pull of the Earth and
moon to generate energy.
While Wave energy uses the
kinetic force of waves to
Waves have lower displacement
than tides but are more
Different converter would be
Available in very huge
When burned only water
is released as end
Hydrogen can be used
in fuel cells to power
A lot of energy is used
to create initial hydrogen
Heat at the core of the
earth exploited to
7,974 MW generated
Needs specific areas to
made like places with
natural hot springs.
13. 1.5 CONCLUSION
As the concerns about the
availability & environmental impacts
of fossil fuels become more wide
spread, the interest on
environmentally benign renewable
energy technologies will surely take
center stage among engineers &