Renewable energy comes from natural sources or processes that are constantly renewed. This primarily includes sunlight and wind.
Although renewable energy is presented as a recent phenomenon, we must say that this is not true. Wind power has been used for centuries to powerboats and ships at sea or windmills on land, while the sun has helped people in various processes ranging from heating houses, drying for various purposes, and the like.
One thing is clearly renewable energy belongs to clean energy.
We now have newer and cheaper ways to produce and retain solar and wind energy.
Renewable sources are becoming important elements of the energy system in many countries.
The increase in renewable energy sources is increasing and goes from small to large scale, starting from solar panels on houses to huge wind farms.
Renewable energy sources, through their participation in energy production, reduce the production of greenhouse gases created by the use of oil, gas, and coal.
Types of renewable energy sources – clean energy
People have been using solar energy for thousands of years to heat houses, grow crops, and dry food.
Nowadays, solar energy is used in many ways, for heating homes, companies or other facilities, heating water, or for powering various devices.
Solar or photovoltaic (PV) cells are made of silicon or similar materials that directly convert solar energy into electricity.
In addition to stand-alone and individual use in the home, there are also solar distribution systems that produce electricity for homes and businesses, but also solar farms that can generate electricity for thousands of homes. One of the new ideas that are already being implemented in the production of electricity through floating solar farms.
This energy has been very significant in human history. The power of the wind propelled the ships on which people sailed the seas and oceans. On land, the wind moved the wheels of the windmill.
But those times are behind us.
Today we have turbines as tall as skyscrapers. Wind energy drives the turbine blades, which power the electric generator and produce electricity.
the wind has become the cheapest source of energy in some countries like the United States. Such turbines can be installed in many places where there is a lot of wind power, even on water surfaces.
Other alternative energy sources
Hydropower is the largest renewable energy source, which is still the largest producer of electricity in a good part of the country.
Hydropower relies on water that moves rapidly in a large river or descends rapidly and converts the force of that water into electricity because it drives the turbine blades of the generator.
Their construction and existence can cause certain ecological changes that can be negative, due to land submergence, changing river flows, or causing some other restrictions.
Biomass is an organic material that comes from plants and animals. When biomass is burned, chemical energy is released as heat that drives the steam turbine and generates electricity.
Biomass is often referred to as pure renewable fuel. however, recent research has shown that some forms of mass, especially from the forest, can produce higher carbon emissions than the burning of fossil fuels.
The earth’s core is about as hot as the sun’s surface, due to the slow decay of radioactive particles in rocks at the center of the planet. Drilling deep wells brings very hot underground water to the surface as a hydrothermal resource, which is then pumped through a turbine to create electricity. Geothermal plants typically have low emissions if they pump the steam and water they use back into the reservoir.
Tidal and wave energy is still in a developmental phase, but the ocean will always be ruled by the moon’s gravity, which makes harnessing its power an attractive option. Some tidal energy approaches may harm wildlife, such as tidal barrages, which work much like dams and are located in an ocean bay or lagoon.
As we see before man, there are various possibilities in the development and application of energy resources in the search for clean energy.