Springs store energy and are part of many mechanical systems. They also matter in the renewable energy field. Consider wind turbines. These structures use disc spring stacks in their braking systems to reduce damage from high wind speeds. This application isn't random - it's a decision made to help the turbine work well and last longer. Because of this, springs have varied uses in the renewable energy field. Selecting the correct spring and understanding its function can affect the performance of a renewable energy project.

Wind Turbines

Spring technology is used in the renewable energy sector, specifically in wind turbines. It is instrumental in adjusting the blade angle in relation to the wind direction, known as 'pitching'.

We consider the use of springs in turbine safety mechanisms. High wind speeds can increase blade rotations, which could affect safety protocols and energy production. The pitch-control system of a wind turbine often uses a spring-loaded mechanism to handle high-speed winds. During normal wind conditions, springs keep the blade angle in the correct position. When wind speeds rise, the springs adjust their position - either tightening or loosening - to promptly alter the blade angle. This alteration manages blade movement, ensuring steady energy conversion.

The spring mechanism's reaction to high wind intensity does not apply to all wind turbines universally. It must be tailored according to the specific wind conditions and turbine specifications. For instance, in areas with changeable wind patterns, the springs in the wind turbines may require more motion flexibility compared to turbines in places with constant wind patterns.

Understanding how springs are used in wind turbines can aid in refining the functionality and safety of the wind turbines. It can also support engineers during the spring selection and design stage for wind turbine manufacture.

Solar Trackers

Springs serve a function in solar energy systems, particularly in the operation of solar trackers that optimize the orientation of solar panels for increased sunlight exposure.

Solar trackers employ mechanical structures to align with the sun's path throughout the day. This continuous adjustment aids in capturing more sunlight, which in turn raises energy output. Consider the scenario of a grid-tied solar panel system employing a double-axis solar tracker: this mechanism relies on springs to control the rotation and tilt of the panel, allowing it to face the sun directly. During active periods, the springs store energy that is released when motor function decreases, enabling the panel's motion to continue amidst low energy supply.

An important point is that the selection of spring type in solar trackers heavily relies on the specifications of the solar system. For example, compression springs, able to withstand high loads, are most useful for large-scale solar farms that have durability requirements. Contrastingly, tension springs, recognized for smaller size and lower cost, are more suitable for smaller residential solar systems fitted with lighter panels. Therefore, an evaluation of the design and load requirements of the solar tracker is a necessary step in selecting the correct type of spring.


Hydropower exploits the energy generated by flowing or falling water, classifying it as a renewable energy source. Springs specifically, within the turbine's governor system in the hydropower station, possess a key function.

In a hydroelectric dam, the governor manages the volume of water entering the turbine by maintaining a stable speed, irrespective of the different water flow rates. Springs, present within this system, essentially capture energy during the compression phase which is later released upon extension. This stored energy enables the governor to adapt to varying conditions. For instance, during situations of increased water intake due to excessive rainfall, the energy stored in the springs aids swift alterations to the governor, thus regulating the turbine's speed.

The optimal operation of these springs can have an impact on the performance of the hydropower system. Factors including the spring material, induced stress levels, along with environmental conditions such as temperature and humidity, have the potential to affect a spring's operation. Therefore, engineers are required to select springs that align well with the operating conditions of specific hydropower stations.

The integration of springs in the governor system results in a more predictable power output. By ensuring precise regulation of water intake, the springs aid in maintaining steady energy production levels despite changing water inputs due to environmental factors like rainfall. Consequently, springs contribute to enhancing the predictability and robustness of the hydropower system.


Springs have a critical role in renewable energy systems like wind turbines, solar trackers, and hydropower systems. Improvements in spring design and selection can improve the functioning of these systems and pave the way for further developments in renewable energy generation. Therefore, careful engineering of spring mechanisms is a key step in optimizing our renewable energy capabilities.