Wind Turbine Repowering

Repowering wind turbines is a concept we offer that involves comprehensive upgrading, replacing older wind turbine components (partial repowering) or potentially the entire turbine (full repowering), with more advanced technology to improve performance, efficiency, and capacity.

Repowering of Wind Turbines as part of asset optimization. 

Repowering wind turbines is a concept we offer that involves comprehensive upgrading, replacing older wind turbine components (partial repowering) or potentially the entire turbine (full repowering), with more advanced technology to improve performance, efficiency, and capacity. It’s a strategy that we increasingly offer towards older wind farms where the existing turbines are outdated,


and the prospect of lifetime extension hereby no longer is a feasible solution, to extend the operational life of the wind farm. 
Repowering is also a strategy to optimize energy production, and meet evolving regulatory or grid requirements, that might be difficult with some older wind farms in some regions. 

Benefits of the 3WIS repowering concept

”The main benefit with our Repowering concept, is that we are able to solve the entire project, from the initial phase of planning and calculations, approval of the solution, through service and installation on site. Combined with a focus on using the existing infrastructure (like roads, foundations, and grid connections) we focus on delivering a service similar to installation of new infrastructure. However, leaving the costs associated with developing a new wind farm highly reduced with our repowering concept.”

The process of repowering

1. Before Repowering is considered as a solution, condition assessment is made, involving inspection of the existing turbines, foundations, and mechanical infrastructure to determine which assets can be reused or upgraded and what requires a total exchange. In this process we determine whether the turbine is suitable for Lifetime Extension or Repowering. 
2. If the condition assessment proves that Repowering is the most viable solution, we offer to perform a compliance review, that ensures confirmation and adherence to local, state, and federal regulations, including environmental laws and land-use restrictions, before and actual feasibility study of repowering is performed. 
3. When we have a layout of the full compliance overview, we know which regulations we must consider to make sure the repowering solution will be approved. These conditions are evaluated in the assessment and feasibility studies, to lay out the best combined solution for the specific site. We involve all necessary calculations, 2D/3D drawings, simulations, calculations, and validations of the solution, before a final regulatory approval. 
4. This phase includes that we create the documentation of the official repowering solution and obtain the updated construction, operating, and environmental permits.
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FAQ: Repowering of wind turbines

What is repowering of wind turbines?

Repowering refers to upgrading or replacing older wind turbines to improve energy production, efficiency, or extend the operational life of a wind farm. This can involve replacing components (like blades or nacelles) or the entire turbine system, but where the existing infrastructure is maintained.

What are the main types of repowering?

- Partial Repowering: Upgrading specific components, such as blades, generators, or control systems, while retaining existing towers and foundations. 

-Full Repowering: Replacing entire turbines, often including new towers, foundations, and updated layouts for better efficiency. 

Can existing infrastructure be reused during repowering?

Yes, in many cases, foundations, grid connections, and even towers can be reused, particularly in partial repowering projects. However, this depends on the compatibility of the new equipment with the old infrastructure.

What are the benefits of repowering wind turbines?

Repowering is a valuable solution for owners of existing wind turbines, where a potential lifetime extension is no longer feasible and the process of granting permission to installation of a new site is challenging, due to local regulations or support. It is easier to obtain permission to repower a site, than constructing a whole new site. 

What are the main challenges of repowering?

- Permitting: Acquiring updated permits and managing regulatory changes. 

-Logistics: Transporting new components and removing old ones.

- Environmental Impact: Minimizing disruption to local ecosystems and wildlife.

- Community Concerns: Addressing potential issues like visual impact or noise from larger turbines.
This is why we also offer Lifetime Extension of the turbine as a potential solution, if repowering might show local permission resistance or is effected by other concerns. 

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