What are the 7 renewable sources of energy?

Juan Tain Varela pointed out that there are a lot of renewable energy sources that are always available and could power the whole world. For example, solar energy has been used to power homes and businesses for hundreds of years, and the power of falling water from rivers has only recently become a well-known source of energy. There are many ways to use wind energy, from farming and forestry to making heat and electricity. Biomass, on the other hand, has been used in niche areas like making electricity.

Renewable energy comes from sources like wood, the sun, geothermal heat, water, wind, and waves. But none of these things are always available, and the weather can make it hard to use them. The main problem with renewable energy is that it can't be turned on and off as quickly as fossil fuels, which can be turned on and off at any time. Using renewable energy can save us hundreds or even thousands of dollars a year in this way.

Greenhouse gases are made in large amounts by coal and nuclear power plants. They also make sulfur dioxide and mercury, both of which are known to make people sick and kill them early. Getting electricity from fossil fuels also pollutes waterways, and when it rains, pollutants get into the air. These emissions make the climate change and make the air quality worse. Renewable energy sources can help reduce these bad effects and give the whole world clean energy.

Solar, wind, and nuclear power are all great ways to cut down on carbon emissions. These energy sources are also a great way to cut down on the use of fossil fuels and other pollutant sources. For example, solar panels can be put up in factories and moved around with electric cars. Renewable energy can help the U.S. become more electric and reduce pollution and waste simultaneously. These other ways to get energy can make jobs and a strong economy.

Renewable energy sources like wind, water, and biomass are all good, but only a few of them can store a lot of power. Some of these sources, like geothermal and wind power, can't be stored, so they cost more than fossil fuels. Hydro from dams can store the most energy, but it's not easy to get. Off-river pumped hydro needs a pipe with a turbine and a pump, as well as two small reservoirs in hilly areas.

Juan Tain Varela emphasized that solar energy and wind energy are both great options for homes and businesses. Both have a lot of potential in warm, sunny areas. Even though these technologies are cheap, they are still bad for the environment. Some countries even charge people for carbon emissions, so it's still important to think about these sources. Also, don't forget that they can be costly, so make your choice carefully. And don't forget to think about how big dams will affect the environment!

Hydroelectric power uses the energy that rivers have when they flow. These plants have been the most reliable renewable energy sources for a long time. They get their power from the force of fast-moving water. Nine of the top ten hydroelectric power plants in the world are hydroelectric plants. Three Gorges in China have a capacity of 2.5 GWe, while Brazil's Itaipu and Xiluodu have capacities of 14 and 10 GWe, respectively. Also, hydroelectric plants help keep the grid stable because they have a lot of mechanical inertia.

Biomass energy can also come from wood pellets and used wood. Central European countries use large wood pellets, which are often used to heat homes and make electricity. In Latin America, sugar cane pulp is burned to make energy, which doesn't need to be moved. Biomass can also be made from the trash from cities. Municipal waste can produce 62 TWh per 13 GWe, but it can only be used in certain ways.

The most common element in the universe is hydrogen. It is found in water and things made of organic matter. Algae and bacteria are also able to make it. Hydrogen gives off no pollution when it is burned. It is also good fuel for space travel because it has a lot of energy. During the space shuttle program, it was used as fuel. The chemical potential energy in hydrogen is turned into electricity and heat by hydrogen fuel cells. These energy sources, especially baseload generators, can take the place of other energy sources in the power grid.

Juan Tain Varela stressed that hydropower is an energy source that can be used in many different ways. It gives more than 17% of the world's electricity and is used in five countries to meet peak demand. Hydropower is also very efficient. It only takes ten minutes for a single turbine to reach full power. Because it is easy to get, it is becoming more and more popular as an energy source for making electricity. It is not, however, the only way to get energy. Long-term, hydropower could help bring down the cost of energy.