Why is renewable energy needed?

Renewable and non-renewable energy

RENEWABLE ENERGY is considered to be that which is obtained from natural sources considered inexhaustible, either because of their immense quantity or because they are generated by natural means. They are considered as future alternative energies since they can replace current energies or energy sources, due to their lower polluting effect or their possibility of renewal.

KEIKEN ENGINEERING is committed to renewable energies and all the energy consumed comes 100% from green energies. Many city councils have already obtained their 100% renewable energy certificate, such as Madrid, Galicia, Cadiz, or city councils of not so big cities, such as Alcobendas.

What is renewable energy?

Renewable energy is a natural, or clean, source of energy that is almost inexhaustible. However, it has not been given the importance it deserves to create environmental solutions, economic improvements and social changes.

Some myths about renewable energy are that they can increase electricity prices, that they are not enough and therefore will not supply all the electricity needed in the world or even that they can be bad for your health.

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What should be known about the energy that is used is that it is the main generator of greenhouse gas emissions which causes highly toxic substances, acid rain and destruction of natural areas such as jungles and forests.

The reality is that, unlike other fossil fuels, renewable energy is abundant all over the planet and is the cheapest source of energy.  Currently, wind and solar energy have experienced a huge technological breakthrough and a radical reduction in implementation costs.

A solution for the implementation of renewable energies in the country is the proper information of the advantages that this entails, as well as being aware of the situation in which the environment is and the causes of climate change.

Energy sources

The debate on the energy model is constantly in the streets: advantages and disadvantages of gas, coal or oil, the nuclear controversy, the viability of renewables… Among the flood of arguments, we have published this decalogue explaining the need for clean energies within the framework of a sustainable economic model.

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Renewables produce energy without emitting greenhouse gases, which makes them an indispensable ally in the fight against climate change. Governments are compelled to move in this direction by international commitments such as the Kyoto Protocol, signed by 200 countries and whose goals include reducing emissions by at least 5% between 2008 and 2012 (based on 1990 levels). Or by supranational policies such as the target set by the European Union for this reduction to reach 20% by 2020. The EC has recently expressed its desire to reduce emissions to between 80% and 95% of 1990 levels by 2050.

Examples of renewable energies

Global temperatures are rising, creating major imbalances. From droughts to thaws, from species extinction to increasingly radical weather phenomena. Climate change is a risk for the planet’s ecosystems.

For example, in countries such as the United States, almost a third of emissions come from the electricity sector. And most of them are generated by the use of non-renewable fossil fuels (such as coal or gas).

For example, in 1999, it was calculated how much CO2 was produced by solar electricity generation, taking into account the emissions of three countries. The result was just 50 grams per kilowatt/hour produced.

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The most interesting thing about this is that, today, solar panels are much more efficient in generating electricity than in 99. In fact, even calculating the CO2 emission to also include the manufacture or installation of such panels, it is still minimal in comparison.