energy
Renewable Energy
SEARCH CITY OF MIAMI:


One Person, Ten Steps

 

Renewable Energy

Renewable energy sources, such as solar, wind, and biomass create less environmental damage and pollution than fossil fuels and offer an alternative to nonrenewable resources.

Picture Credit: www.inhabitat.comSolar power uses solar cells to convert sunlight into electricity. In one minute if harnessed, enough solar energy falls on the earth to provide all humanity enough energy needed for a year. The benefits of solar power include no water or air pollution, it is very efficient for heating, and helps to prevent global warming. The negative side is that solar power is not always predictable since it depends on the amount of sunlight that reaches the Earth at any given time.

Wind power uses wind to turn the blades of a wind turbine. The turbines rotate magnets which creates electricity. Wind power produces no water or air pollution and is a renewable source of energy -- it will never run out. The cost of wind farms is low since you can use them on land with other uses such as farming and grazing. A negative is that wind turbines can disrupt bird migration patterns and pose a danger to the birds themselves, although newer, larger wind turbines have slower moving blades which are visible to birds.

Biomass production uses garbage or other vegetation such as corn to generate electricity. When garbage decomposes the methane produced is captured in pipes and later burned to produce electricity. Vegetation and wood can be burned directly, like fossil fuels, to generate energy or processed to form alcohols.

Biofuel
is a solid, liquid, or gas derived from biomass such as corn, palm oil, or sugar cane and used as a fuel in transportation.
Biofuels are cleaner and cheaper than most greenhouse gas emitting fossil fuels. However, large-scale use of them in the form of monocropping can lead to significant biodiversity loss, soil erosion and nutrient leaching. Additionally, some researchers claim biomass crops produced from intensive farming, such as ethanol, can result in a net loss of energy after one accounts for the fuel costs of fertilizer production, farm equipment, and the distillation process.

Renewable Energy Resources in Florida