Energy resources can be obtained from many sources. The Earth is the primary source of energy resources. These sources can include wood, agricultural waste, and energy crops. Another resource that can be used is landfill gas. These resources are diverse and may require individual management. To address this issue, it is best to separate each resource.
Natural resources
Renewable resources are those that can be replenished. However, nonrenewable resource cannot be used up once their stock has been exhausted. Metals, like iron, are nonrenewable since they cannot easily be replaced once they are mined. Human populations are growing faster and there is greater demand for sustainable resources. Renewable resources are increasing in availability, even though fossil fuels still provide energy for humans since the late-1880s.
Natural fuels
Natural fuels are one the oldest forms for energy. Coal was used for a long time as a source of energy, but it is now less popular, as renewable energy sources are available at much lower costs. However, many countries are shifting away from fossil fuels in favor of more renewable sources.
Oil
Oil is an energy resource that can be used in a wide variety of industrial processes. But, oil does have its disadvantages. The first is its limited availability. The world's oil reserves are rapidly depleting, and the price of oil is continually rising. Its negative impact on the environment is another disadvantage. The world's oceans are polluted by oil extraction and marine life is severely affected.
Hydroelectricity
Hydroelectricity is a renewable and inexhaustible source of energy. It works well in combination with other renewable resources such as solar power and wind energy. It is also one the most flexible forms to energy generation. It can be turned on or off in less than two minutes and is extremely responsive. This makes it an ideal choice for managing production levels during the day.
Bioenergy
Bioenergy is a renewable energy resource that can be used to generate electricity, heat, and other energy needs. In 2016, the world's bioenergy capacity reached about 110 gigawatts (GW), accounting for around 2% of total global electricity generation. During this same time period, capacity additions averaged between five to seven GW each year. Bioenergy is cost-effective and can provide a reliable source of renewable energy.
Nuclear energy
Nuclear energy is a renewable energy source that can generate electricity without emitting pollutants. It is used to power space exploration as well as to sterilize medical devices, to supply potable drinking water through desalination, or to make radioisotopes that can be used in cancer treatment. It is also used to support clean air initiatives and combat climate change.