This document discusses several renewable energy sources including their advantages, disadvantages, and uses. Biomass is an unlimited source of energy that produces few residues and is less contaminating than fossil fuels, but has low efficiency and requires large volumes for handling. Hydroelectric energy is also unlimited, has low costs, and helps control flooding, but is dependent on weather conditions. Solar and eolic energy are unlimited and clean sources, but availability is affected by weather for solar and wind is intermittent for eolic. Geothermal and tidal energy do not depend on weather like solar or wind, but geothermal has environmental impacts and tidal has low efficiency and is limited to coastal areas.

2. RENEWABLE ENERGY SOURCES
ADVANTAGES
DISADVANTAGES
BIOMASS
-Unlimited source of
-Low efficiency
energy.
-Large volume makes
-Produces very few
handling and transportation
residues, mainly
difficult.
biodegradable.
-Less contaminating than
fossil fuels.
HYDROELECTRIC
-Unlimited source of
energy
-Low usage and
maintenance costs.
-Clean energy source.
-Helps to control
flooding.
-Provides water to
agricultural areas during dry
seasons
-High transportation
USES
-Provides heat,
electricity and gases such as
ethanol.
-Production of heat,
costs.
electricity for homes and
-Dependent on weather industry.
conditions.
-Negative environmental
impact.
-Risk of dam breakage
and potential flooding.

3. RENEWABLE ENERGY SOURCES
ADVANTAGES
DISADVANTAGES
USES
SOLAR
-Unlimited source of
energy.
-Low maintenance cost
-Clean energy source
-Availability affected by
latitude, seasons, cloudiness.
-Requires large area to
collect
-Production of heat
-Transformed directly
into electricity.
EOLIC
-Unlimited source of
energy
-Low installation and
maintenance costs.
-Clean energy source.
-High efficiency
-Wind is intermittent
and inconsistent.
-Difficult to store.
-Requires large areas
-Wind turbines are loud
-Interferes with radars,
televisions and radio.
-Dangers to birds.
-Transformed directly
into electricity.

4. RENEWABLE ENERGY SOURCES
ADVANTAGES
DISADVANTAGES
USES
GEOTHERMAL
-Not dependent on
-Negative environmental
-Transformed directly
weather conditions unlike solar impact.
into electricity.
or eolic energy.
-Installation is difficult
-Clean energy source
and costly.
TIDAL
-Unlimited source of
energy
-Not dependent on
weather conditions.
-Clean energy source.
-Low efficiency
-Transformed directly
-Negative environmental into electricity.
impact.
-Limited to certain
coastal areas