cutting pictures and other available data about the energy resources in depend on the geography
Answers
Energy Source Pros Cons
Solar Energy
Non-polluting
Most abundant energy source available
Systems last 15-30 years
High initial investment
Dependent on sunny weather
Supplemental energy may be needed in low sunlight areas
Requires large physical space for PV cell panels
Limited availability of polysilicon for panels
Wind Energy
No emissions
Affordable
Little disruption of ecosystems
Relatively high output
Output is proportional to wind speed
Not feasible for all geographic locations
High initial investment/ongoing maintenance costs
Extensive land use
Hydropower
No emissions
Reliable
Capable of generating large amounts of power
Output can be regulated to meet demand
Environmental impacts by changing the environment in the dam area
Hydroelectric dams are expensive to build
Dams may be affected by drought
Natural Gas
Widely available
Cleanest-burning fossil fuel
Often used in combination with other fuels to decrease pollution in electricity generation
Made safe by adding artificial odor so that people can easily smell the gas in case of a leak
Transportation costs are high
Lack of infrastructure makes gas resources unavailable from some areas
Burns cleanly, but still has emissions
Pipelines impact ecosystems
Petroleum
Efficient transportation fuel for the world
Basis of many products, from prescription drugs to plastics
Economical to produce
Easy to transport
High CO2 emissions
Found in limited areas
Supply may be exhausted before natural gas/coal resources
Possible environmental impact from drilling/transporting
Biofuels
Abundant supply
