2. What is
RENEWABLE ENERGY?
Renewable energy is generally defined as
energy that comes from resources which
are naturally replenished on a human
timescale such as sunlight, wind, rain,
tides, waves and geothermal heat.
Renewable energy replaces conventional
fuels in four distinct areas: electricity,
generation, hot water/space heating,
motors, fuels.
3. Why is renewable energy
important?
Renewable energy is important because of
the benefits it provides. The key benefits
are:
Environmental Benefits
Energy for our children's children's
children
Jobs and the Economy
Energy Security
4. Types of renewable energy
There are 5 types of renewable energy
sources:
1. wind power
2. solar power
3. geothermal energy
4. hydroelectric power
5. biomass
5. Biomass
Biomass is biological material derived from
living, or recently living organisms. In the
context of biomass for energy this is often
used to mean plant based material, but
biomass can equally apply to both animal
and vegetable derived material.
7. Mind Map of Biomass
use
environment
impacts
drawback
importance
BIOMASS
Potential
impacts
Economic
impacts
benefits
Social
issues
8. Uses of Biomass in Pakistan
Biomass energy is derived form various sources which
help in generating sufficient energy for use. The various
source of generating energy from biomass are wood,
waste, alcohol, garbage, landfill gases. Wood is either
taken from trees or from the waste of industrial
processes. The waste material of industry like paper
making is really helpful in providing pulping liquor. The
second major source of deriving biomass energy is from
the solid waste. This solid waste is either provided by
municipality waste or industrial waste. When energy is
extracted either from alcohol or from the fiber present in
the corn, it is termed as ethanol fuel. This ethanol fuel is
really helpful in providing fuel to the cars and farm
tractors.
9. Advantages of Biomass
Biomass is very abundant. It can be found on every square meter of the earth
as seaweed, trees or dung.
It is easy to convert to a high energy portable fuel such as alcohol or gas.
It is cheap in contrast to the other energy sources.
Biomass production can often mean the restauration of waste land (e.g.
deforested areas).
It may also use areas of unused agricultural land and provide jobs in rural
communities.
If it is produced on a renewable basis using biomass energy does not result in
a net cabon dioxide increase as plants absorb it when they grow.
It is very low in sulphur reducing the production of acid rain.
10. Potential Impacts of Biomass
The potential impacts of biomass energy development projects
are discussed in this section in general terms on the basis of
typical utility-scale biomass projects for which information is
currently available. The impacts of a specific project will be
determined by factors such as the type and size of the biomass
facility, the amount of land disturbed by construction activities,
the amount of land occupied by facilities long term, the location
of the site with respect to other resources (e.g., species use of
the site, distance to surface water bodies), and so forth. The
various types of biomass facilities (such as power plants,
ethanol ,production plants, bio diesel and biogas production
plants, and landfills) may involve different activities and, as
such, result in different impacts.
