When the first service contract ends: strategic choices for wind parks
Across Europe, many wind parks are approaching an important milestone in their operational lifecycle. While wind turbines are typically designed to operate for around 20 to 25 years, the first major turning point often arrives much earlier – when the original maintenance contracts expire after 10 to 15 years. At this stage, wind park owners face a strategic decision. Rather than automatically continuing existing arrangements, they have an opportunity to reassess the best way to manage their assets for the next phase of operation.
”After the initial maintenance contract expires, it makes sense to review all options available on the market. A lot can change in 10 or 15 years: technologies improve, new service providers emerge and financial conditions evolve,” explains Joost Cornelli, team leader of the realisation team in GreenTrust.
GreenTrust works with wind park owners to evaluate the most suitable path forward. There is no one-size-fits-all solution. One option is extending the original service agreement with the turbine manufacturer. Another is switching to an independent maintenance provider capable of performing the same work, sometimes under different commercial conditions. ”[JC1] During the first years owners usually rely on the manufacturer’s service organisation, but later they may choose independent specialists who can maintain the equipment just as effectively,” says Joost.
Financial considerations also play a role. Around 10 to 15 years after construction, the loans used to finance many wind parks are often already repaid. This gives owners more flexibility to adjust maintenance strategies or contractual guarantees. ”That’s why it makes sense to review all existing agreements after such a long period.
In some cases, operators take the opportunity to rethink the entire asset strategy. Beyond renegotiating maintenance contracts, wind park owners may also consider broader strategic options. In some cases turbines can be replaced with newer, more powerful models, while the existing turbines are sold, refurbished and installed at other sites, giving them a second operational life. Another possibility is lifetime extension. When turbines approach the end of their designed lifespan, specialized engineering studies can determine whether they can safely operate beyond their original design life. Even wind parks nearing 25 years of operation may still be able to continue producing electricity for several additional years, depending on the results of these technical assessments.
”Our role is to help clients assess what works best for their specific situation. Every wind park is different, so together with the client we determine the most suitable approach,” says Joost. GreenTrust supports clients throughout the process by coordinating external experts, providing operational data and ensuring that all necessary information is available for accurate analysis. GreenTruster Senne Koetsier is the expert and point of contact for this. ”We guide clients through the decision making process and make sure the correct data and information are provided. Engineering firms require a lot of operational input and documentation, and we help translate their technical needs into the information our clients can supply. This ensures that the calculations and final reports are accurate,” Joost explains.
As thousands of wind turbines across Europe approach similar milestones in the coming years, lifecycle management is becoming a critical topic for the renewable energy sector. With the right strategy, whether through optimized maintenance, lifetime extension or second-life solutions, wind parks can continue generating clean electricity well beyond their initial service agreements.