FAQ

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Renewable energy is energy that can produce heat or electricity from readily available natural resources that replenish themselves within our lifespans. These resources include sunlight, wind, moving water, and heat from the earth. Renewable energy is sustainable because it renews itself.

Frequently asked questions

Most frequent questions and answers

What alternative energy can replace fossil fuels?

Whether alternative energy sources such as biofuels, hydrogen, solar, geothermal, or nuclear energy can meet energy demands better than finite fossil fuels such as oil and coal remains hotly debated.

What are the disadvantages of using nuclear energy?

Here are some of the main cons of nuclear energy.
  • Expensive to Build. Despite being relatively inexpensive to operate, nuclear power plants are incredibly expensive to build—and the cost keeps rising. …
  • Accidents. …
  • Produces Radioactive Waste. …
  • Impact on the Environment. …
  • Security Threat. …
  • Limited Fuel Supply.

What can be used as alternative source of energy?

Today, we start using alternative sources of energy like solar power, wind power, geothermal, biomass, hydro power, waste energy and so on, because these renewable energy sources are not polluting the environment and are helping us to reduce the level of greenhouse gas emissions in the atmosphere and to reduce climate …

Why is alternative energy bad?

All energy sources have some impact on our environment. Fossil fuels—coal, oil, and natural gas—do substantially more harm than renewable energy sources by most measures, including air and water pollution, damage to public health, wildlife and habitat loss, water use, land use, and global warming emissions.

What are the 7 alternative sources of energy?

  • Solar. Solar energy is derived by capturing radiant energy from sunlight and converting it into heat, electricity, or hot water. …
  • Wind. Wind farms capture the energy of wind flow by using turbines and converting it into electricity. …
  • Hydroelectric. …
  • Geothermal. …
  • Ocean. …
  • Hydrogen. …
  • Biomass.

What is the most efficient source of energy?

Most Efficient Energy Sources

Although there are many types of energy, the most efficient forms are renewable: hydro-thermal, tidal, wind, and solar. Solar energy has been proven to be the most efficient and effective among renewable energy sources for home and commercial use.