Energy comes from a variety of types of energy. They are then converted into secondary forms like fuels and electricity, and then transmitted through different channels to provide power for our homes, industries, vehicles and lives. Energy sources are classified as renewable and non-renewable.

Renewable (or clean energy) is energy that is produced from natural resources that are constantly replenished. Examples include wind, solar and geothermal. Fossil fuels (coal, oil and natural gas) are regarded as non-renewable due to the fact that they are formed at a lower rate than what we consume from them, meaning they will eventually run out.

Solar energy can be harnessed by a single rooftop or in large solar power plants. It can also be converted into photovoltaic solar energy, which generates electricity directly. Water can be used for the production of hydropower, or to generate energy from tides and waves. Geothermal energy is generated from hot water reservoirs underground. Bioenergy comes from various organic sources, like woody crops or dung from livestock, as well as human waste.

In addition to being eco-friendly, renewable energy is often cheaper than fossil fuels. Renewable energy is costly and requires a large infrastructure to harvest and distribute the energy. This can result in difficult trade-offs when it comes to environmental economic, social, and factors. The advancement of these technologies continues to grow and they are making strides over the more traditional fuels. In the long term renewable energy could be more affordable than coal and oil.

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