News

02/04/2025

NorZet Prototype Rotor Performance Experience

Two years have passed since the installation of our NorZet prototype rotor system, designed to replace the Endurance Wind Power E-3120 rotor.

To summarize the experiences, we have created a case study document looking at energy performance and operation results, to provide a picture of what benefits our system brings. In the analysis, we compare the energy generation between the new rotor and the old E-3120 rotor in a worn condition. We also compare to the WES 80 and the BestWatt 80 wind turbines, to provide a broader comparative perspective on turbines in this size class, where the E-3120 turbine stands out as a very well performing turbine.

The document is available on our webpage www.norzet.co.uk under Case Studies section.

What is more, we are pleased to announce that Earthmill Maintenance successfully completed installation of our NorZet rotor on a E-3120 with 36m tower near Insch, Scotland. Preliminary production data from this installation are highly encouraging, and we anticipate gathering complete generation data in the near future.



10/02/2025

E-3120 Owners: Evaluating Rotor Performance for Potential Improvement

NorZet Ltd has been developing its New Rotor System since 2021, launching it commercially in early 2024. As of January 2025, six rotors have been installed on individual and paired turbine sites. The most recent installation was completed by Earthmill Maintenance Ltd.

NorZet's ongoing post-installation support includes performance analysis of both newly installed rotors and those under consideration for upgrade. Recent analyses have yielded significant findings:

The analysis revealed underperformance in several turbines operating with the older rotor system, evident in their power curves. This underperformance was observed even in rotors refurbished within the past 1-3 years, with documented power losses ranging from 5% to 30%, directly impacting revenue for owners. (See example chart below for illustration.)

Based on these findings, NorZet recommends that E-3120 owners re-evaluate their current power curves. NorZet offers a complimentary WindSync guide to assist owners in conducting this analysis accurately.

For further information on the WindSync guide and on the NorZet rotor system, compatible with E-3120 turbines upgraded with the Earthmill rEsolve shaft and bed plate solution, please contact: enquiries@norzet.co.uk or use Contact Us form

25/11/2024

NorZet New Rotor System for the E-3120 Demonstrates Performance and Reliability

NorZet is pleased to announce the successful operation of its New Rotor System prototype for over 20 months. Additionally, as of November 2024, five new rotors have been installed and generating consistent and reliable energy output, meeting expected power curve targets.

As part of ongoing post-installation support, NorZet conducts pitch setting tests to optimize performance with good results:

Based on preliminary data from twin-site comparisons, the new NorZet rotors appear to be performing slightly better than both flat- and circular-root blades in good condition. It's important to note that the new system eliminates the passive pitch holder system, a potential source of wear, power degradation and downtime. Further studies will be conducted in the coming months to confirm these observations.