Wind energy is a renewable energy source that generates electrical energy from the force of the wind.
In another article we analyze the advantages and disadvantages of the production of electrical energy through windmills. However, here we will take a closer look at the drawbacks.
The Generation Capacity Depends on the Wind
One of the main drawbacks of wind energy is that there is not always wind, so the support of another type of energy is needed for those moments (both polluting and clean).
It often happens that the peaks in electricity demand do not coincide with the times of the highest wind, therefore, electricity production must be supplemented with other sources of energy.
Difficulty with Electrical Planning
Being an energy that depends on the wind, electricity production cannot be planned.
Statistically, the days and times of greatest demand for energy from the electricity network are known from both the general population and the industry. These data are used to regulate the power of conventional power plants (gas plants, nuclear plants, etc…).
Thanks to meteorological models, this aspect has been significantly improved, especially when choosing the ideal locations to install a wind farm. However, it is not possible to increase the wind intensity according to need.
Cannot Be Stored
One way to compensate for the planning problem would be to store the energy generated at times of greatest wind intensity. However, we are faced with one of the main drawbacks of most energy sources: storing large amounts of electrical energy is not feasible.
Limitation in a Narrow Range of Wind Speeds
Wind turbines only work properly in gusts of wind between 10 and 40 km / h. At low speeds, the energy is not profitable and at high speeds it represents a physical risk for the installation. When the wind is too strong, the blades are turned so that the wind crosses them exerting the same pressure on both sides and they do not move.
Transport of Electricity to Points of Consumption
Since wind farms are located far from consumption points, an energy transport infrastructure is required, leading to energy loss and the need to install transport infrastructure.
Need to Oversize Wind Farms
The energy density of the wind is low, which requires the number of wind turbines to be high to be useful. That is, while it is cheap and easy to obtain power, it takes a large sum of wind turbines at the same time to make it profitable.
The construction of wind farms has an environmental and aesthetic impact on the landscape, which sometimes causes discomfort in the local population. Often it is necessary to open roads and accesses to move the different parts of the wind turbines.
On the other hand, when it is in operation, the blades or blades of the wind turbines cause damage and danger to the fauna of the birds in the area, which if they collide with them usually die with them. of the impact.
Wind turbines make sound. However, it is true that this disadvantage has been minimized thanks to the engineering advances that have been applied to the new turbines.