x
 

Register | Login| The O2O WIND App

About the Siemens 4-5.X User Group

With whom will you collaborate and why?

The 13 energy companies currently in the group, collectively operating 737 Siemens 4–5.X units across: Bosnia and Herzegovina, Brazil, Canada, Chile, Germany, Greece, Japan, Mexico, Norway, Peru, Spain, Sweden, and the United States.

Screenshot 2026-01-29 at 19.03.49
 
 Within the Siemens 4-5.X user group, we share experiences of various suppliers, alternative suppliers, spare parts, and new and alternative solutions for operating, maintaining and increasing power output from these turbines.
 
Their reason for sharing technical challenges is clear: improve their Siemens 4-5.X operations and increase profitability.
 
 

What are we solving?

Example of discussions among our Siemens 4-5.X members: 

Has anyone else seen blade wrinkles progress into delamination before inspections clearly flagged the risk?

Are others seeing hydraulic underperformance, showing up in power curves before clear faulting?

145 blades: shell cracks, replacements — but still no clear RCA?

Anyone else finding hidden tip LE delamination on SG145 blades?

Recurring lightning damage — LPS design issue?

Lss coupling issues - anyone seen/fixed this

Have others dealt with LSS coupling misalignment?

Spacer retrofit on 4.X main bearings

Very long time spent on repairing core gaps, wrinkles, delamination on blades

Five different challenges on main bearing bundled as one

If you are a member, just click the link and join the discussion on the app.

 

 

Our Collaboration Formula

Our Siemens 4-5.X collaboration formula - in four steps below:

Step # 1: Before the meeting

Step # 2: At the meeting

Step # 3: After the meeting

Step # 4: More input included

 

 

When is the next Siemens 4-5.X Owner's Meeting?

We arrange our Siemens 4-5.X Owner's Meetings 2-3 times a year, depending on what our members want. To see when we arrange the next gathering of Siemens 4-5.X owners, please click here.

 

 

Evaluation of our turbine-specific activities

Share your email below, and you will receive the complete summary of all evaluations of our turbine-specific activities in your mailbox. We can only share this with other wind turbine owners, so we have created a little set-up that enables access only for wind turbine owners.

 

 

What makes us unique - Our 4 Differentiators

 

Differentiator #1: Selected ingredients - the ones being closest to the machine

In our user groups, we are adding the ones being closest to the turbines. That means those who 1) knows the machine best, 2) are most valuable for the user group and 3) will gain most from the user group.

 

Differentiator #2: Fresch ingredients - insights to be consumed directly or when you need it

Within our collaboration, we have shared experiences and insights since 2014. With our app, we can provide you with well-structured knowledge, powerful search functionality and fast communication.

 

Differentiator #3: Cooked in the biggest pot - giving you a global reach

With O2O WIND you will have a global reach including +50 energy companies from +30 countries on all continents.

 

Differentiator #4: Keep the pot simmering, all the time - we do nothing else

All our cash flow comes only from wind asset owners. We have no other sponsors which leave us with one single task: To keep the pot simmering all the time.
 

 

 

The End Goal: A common platform of Siemens 4-5.X Best Practise

Having our members share data, insights and experiences on the app and on our meetings will, over time, build up valuable operational knowledge.
 
The simple fact that all shared Siemens 4-5.X challenges and solutions are based on real challenges painfully experienced by wind asset owners is what makes it genuine.
 
The End Goal of doing all these activities is to create and develop a common platform of Siemens 4-5.X Best Practice.
 
 

How to join?

With a signed user agreement and a confirmed invoice, your company tells O2O WIND which users that you want to have onboard. O2O WIND will then take over and enrol each and every one of these persons in our automated onboarding process, supported with video tutorials for each step.

Each user will decide which user groups he/she wants to connect with and will come out on the other side, surrounded by peers from the whole world operating the same turbine models.

 

Pricing, terms and conditions

As a Siemens 4-5.X owner, you can choose two ways to benefit from these services:
 
Option 1 - become a regular member
As a regular member you can add an unlimited number of users and be able to access an unlimited number of user groups, including the Siemens 4-5.X User Group. Pricing for becoming a regular member is MW-based and found at the lower end of this page.

 

Option 2 - Single User Group Account
You can also choose to connect only to this specific user group with a Single User Group Account. The annual fee for a Single User Group Account for the Siemens 4-5.X User Group is 5.480 €. With a Single User Group Account, you can add an unlimited number of users to this user group.

 

Please note that both options should have a signed user agreement in place.
 
 
 

Speak directly to the persons behind O2O WIND International

With consent from our members we are allowed to view the actual collaboration, under the following three conditions:

  1. O2O WIND staff will guide during the live viewing but the guest will not be allowed access to the platform on their own.
  2. The guest will not tell third party what was viewed on the platform. The most simple version of an NDA is applied.
  3. It can only be shown to wind turbine owners. 

If these conditions are valid for your company, please find a suitable time below: 

 

   

Collaborate with your peers for first-hand knowledge, informed decisions and better results

+ 50 energy companies from + 30 countries on all continents have connected

Get on track - to be connected

© O2O Wind International | Privacy Policy | +46-760 21 71 77 | info@o2owind.com | SUPPORT 

SHARING IS MONEY