Clean energy and renewable energy are two concepts that are bundled together, but they are not the same thing and it is important to understand the difference. The first difference is the pollution they cause. You may not realize that renewable energies can cause pollution.
For example, biogas and biodiesel are renewable sources of energy because, among other things, they come from natural, inexhaustible sources. However, unlike most renewable energies, they pollute the atmosphere on combustion, emitting greenhouse gases.
Clean energies do not pollute and, therefore, it is fair to say that most renewable sources of energy are also clean and vice versa.
Clean energy comes from generation systems that do not produce any kind of pollution, notably greenhouse gases like Co2, which cause climate change. Therefore, clean energy - in full development - drives advances to conserve the environment and palliate the crisis with non-renewable fuels, such as gas and oil.
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Reference: https://www.iberdrola.com/sustainability/clean-energy
As you can see, there are numerous types of renewable energy, but what do they all have in common?
They are environmentally friendly: no clean energies generate greenhouse gases or other polluting emissions into the atmosphere.
They are unlimited: we obtain them from inexhaustible or rapidly regenerating natural resources, so they can be used indefinitely and without limit .
They are safe: they do not entail additional hazards like nuclear power, and they are simple to dismantle, so there are no waste management issues at the end of the facility’s useful life
They promote energy independence: because they use natural resources found all over the planet, so that countries and regions are able to develop their own technologies rather than depending on electricity produced abroad.
They create jobs and boost the local economy: most renewable facilities are labour-intensive to build, maintain and operate, which creates jobs and stimulates the national economy.
2021 was a strong year for the energy transition: almost 257 GW of renewables were installed worldwide, increasing the energy stock by 9.1%.
Solar PV alone accounted for more than half of new renewable energy installations with a record 133 GW, followed by 93 GW of wind power overall, 21 of which are offshore wind installations.
In 2020, IRENA published the first report on renewable energy sources, Global Renewables Outlook: Energy Transformation to 2050 Enlace externo, se abre en ventana nueva. The report argued that to overcome the health, humanitarian, social and economic crisis triggered by the COVID-19 (coronavirus) pandemic, it is imperative that economic stimulus policies are aligned with the need to ensure sustainability and strengthen resilience, as well as improve people's health and well-being.
To achieve this goal, it is essential to commit to Green Recovery and to effectively carry out the energy transition. This is the only way we can aspire to meet global climate targets and decarbonise the economy.
The Iberdrola group plans to invest 150 billion euros by 2030 to remain at the forefront of the global energy revolution, thereby consolidating its business model, based on more renewables, more grids, more storage and more smart solutions for customers.
The fight against climate change is the great challenge for humanity in the 21st century, and the necessary shift towards a decarbonised economy based on renewable energy is everyone's task. The minimum target of 32% renewable energy by 2030, set by the European Parliament and the Council on the Renewables Directive, is achievable. To achieve it, we must without fail assume a scenario of high decarbonisation and electrification of the economy, using decarbonised fuels in niches and sectors that are difficult to electrify.
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