FAQs

Frequently asked questions about the wind sector.

BASIC INFORMATION

What is wind energy?

Wind energy is the energy which derives from the wind. Solar radiation heats the atmosphere in differential fashion and causes the temperature of the air to vary in different areas. Hot air rises which reduces atmospheric pressure on the land surface and cold air lowers to replace it. The final result is the wind.

Air has mass and when it is in motion, it causes kinetic energy which can be transformed into electricity.

How is energy produced?
How is the energy produced transmitted to the grid?
Can all the energy deriving from the wind be used?
How does a wind turbine work?
What is a nacelle?
How much electricity does wind energy generate in Spain?
What makes onshore wind farms different from offshore wind farms?
Is wind energy different from other renewable energies?
What percentage of electricity demand does wind energy cover? What percentage will it cover in 2020?
How long does it take to install a wind farm?

ECONOMIC INFORMATION

Why does electricity prices decrease when the wind blows?
Wind energy has in its DNA the decrease of electricity price in Spain and in many other countries. The more wind energy that enters the energy system, the more the price decreases, as it displaces more expensive technologies. Therefore, the greater the proportion of wind energy consumed, the less Spaniards pay on their electricity bill. And viceversa.

To better understand the reducing effect of wind energy on electricity prices, click on Wind energy and the price of electricity, where you will find answers to different issues related to wind power generation and its effects on prices.
Does Spain have a dominant position in wind energy R&D?
How has Spain become a world reference in wind energy?
What advances are being made in the technological field?
Is it true that wind energy generates a lot of employment?
How much have Spanish companies invested in wind energy?

INFORMATION ABOUT THE BUSINESS

Why is it taking so long to develop offshore wind energy in Spain?

The orography of the Spanish coastline is complicated, there is no continental platform and the waters are very deep, increasing the installation costs. This sets us apart from other countries where offshore wind is enjoying healthy development. In the UK, Denmark, Sweden and Germany, the depth stands at around 20-30 metres, even far removed from the coastline.

What future awaits wind energy in the world?
With the emergence of China and the US, along with other countries, in wind energy, what role will the Spanish wind energy sector play in this new world scenario?

ENVIRONMENTAL INFORMATION

What are the environmental benefits compared with fossil fuels?

The technologies which burn fossil fuels generate greenhouse gases which contaminate, exacerbate climate change and affect health and the environment. Wind energy does not generate emissions as its fuel is the strength of the wind: in 2018, wind energy avoided the emission of over 25 million tonnes of CO2 (the equivalent of planting 1 million trees) and avoided imports of fossil fuels by 1,506 million euros.

What impact do wind farms have on the birds and mammals of those regions where they are set up?
Do wind turbines make noise?
Are wind turbines compatible with cattle?