How Long do Wind Turbines Last Before Needing to be Replaced?

How Long do Wind Turbines Last Before Needing to be Replaced?

How Long do Wind Turbines Last Before Needing to be Replaced?

When I tell people about wind energy, I sometimes say things like “wind turbines are meant to endure 20–30 years,” and they give me an astonished or “gotcha” expression. I get what they’re thinking: are windmills built to fall apart on purpose? Perhaps that “big wind” might benefit from the need for wind farm owners to purchase new turbines? 

The truth is a little less spectacular. Engineers employ the design lifetime concept for various reasons, including making products more dependable and less expensive than if each component was intended to last a lifetime.

How long does a wind turbine last?

 A decent grade contemporary wind turbine has a design life of 20 years. The turbine might survive for 25 years or possibly longer, depending on how stormy and turbulent the location is; however, like with everything mechanical, maintenance expenses would rise as it grows older.

Because wind turbines are subjected to such high loads throughout their lifespan, they are unlikely to endure much longer. This is partly due to the form of a wind farm, which has the critical pieces (blades and tower) only anchored around one end and exposed to the full power of the wind because of the wind’s strength.

What Determines a Wind Turbine’s Lifespan but What Harm Wind Turbine Blades?

The environmental operating circumstances that the wind sector faces are vital aspects that affect the lifetime of a wind turbine. The cyclic loading of the foundation, jacket structures, and monopiles induced by waves is a site-specific condition that includes average sustained winds, turbulence intensities, and (particularly offshore wind energy operator) the cyclic loading of foundational principles, jacket structures, and monopiles.

In addition to these environmental factors, every structure faces the everyday problems of fatigue failure due to usage during the asset’s lifetime. These encompass various parts and components, from wind turbines to wiring to hydraulic systems.

Wind turbine blades require extra attention since they are more vulnerable to damage. Rotor blades are vulnerable to increased levels of stress and fatigue as a moving element, and they can be damaged by birds or other things impacting them and the effect of an intense wind speed or lightning storms.

Is it possible to extend Wind Turbine’s Life Span?

A turbine’s lifespan can be prolonged by regular monitoring and maintenance. This necessitates assessing the asset’s state and comparing it to the turbine’s remaining lifespan, based on predicted loads and fatigue and environmental considerations at the wind energy site.

These evaluations will establish if the structure can continue to operate and when any parts may need to be replaced to extend the overall structure’s life. A lifespan extension assessment encompasses both practical and theoretical study, including on-site inspections and the review of design load data.

A status report will outline the maintenance requirements, allowing an appropriate estimate of the cost of extending the life of a wind turbine to be calculated. This allows the operator to compare replacement or decommissioning expenses against the ongoing operational costs and risk of failure. Providers also need the report at the end of a turbine’s design life and can ask for insurance plan extensions.

When Do Wind Turbines Need Maintenance to Stay in Service for a Longer Time?

As previously said, the amount of service needed to keep a wind power asset operational varies based on various factors such as operating conditions and materials employed. On the other hand, wind turbines often require preventative maintenance checks two or three times every year. These inspections may become increasingly necessary as the turbine matures and needs more maintenance to be operational.

What were the Challenges of Offshore Wind Turbine Maintenance?

Offshore power production installations confront unique problems in terms of maintenance. The difficulties experienced by inland assets are sometimes worsened by offshore operating circumstances, providing their own set of issues. Along with the standard materials, fatigue and wind-related problems include corrosion, erosion, and biofouling.

As the dependency on offshore alternative energy sources develops, it will be even more critical to solve these issues to sustain operational availability.

Do wind turbines generate any waste?

Per a 2017 Cambridge research, turbine blades will contribute 43 million metric tonnes of garbage in 2050. Because they are challenging to recycle, most blades wind up in landfills.

When a disaster happens to a wind turbine, what happens?

The turbines were unharmed since they were built to withstand up to 140 miles per hour winds. The blades would not end up turning, no matter how powerful the winds are. The turbine cuts off at 55 mph. The turbine’s head yaws to reduce the stresses on the blades.


Wind farm operators must decide whether to keep operating, repower, or decommission their assets as their assets age. The physical state of the turbines is a factor in these decisions, as is the projected lifetime of the blades. Inspections and monitoring technologies aid in assessing these aspects, ensuring that wind farms function safely for the duration of their design life.

 Depending on the damage caused by external variables and tiredness, this life might be prolonged or decreased. Wind farms can function beyond their intended lifetime if they operate within the limitations of the design life and circumstances, and maintenance is performed regularly. 

In many situations, the wind patterns at a site provide lower loads than expected, preventing substantial damage to turbine structures. Repairs are modest and very affordable in many cases, and a lifespan extension evaluation may reveal that a turbine may function beyond its original design life.