UL Solutions completes evaluation issuing Load Component Certification for the wind turbine MM92 load simulation model.
November 2026 – UL Solutions has issued a Load Component Certificate for the MM92 wind turbine, in compliance with IEC 61400-1 Ed.3/A1. This marks a major milestone for ACT Blade towards the commercial deployment of its ACT100 retrofit blade.
The certificate establishes an independently certified reference for the loads generated by the MM92 wind turbine in its original configuration. Together with the ACT100 Design Conformity Statement already issued by UL Solutions, it provides certified models for evaluating individual sites. These milestones provide independent evidence supporting increased energy capture with the ACT100 retrofit, subject to site-specific evaluation for safe operation within the applicable MM92 design load envelope.
For owners of ageing MM92 fleets, the significance is substantial: the possibility of increasing energy production while retaining the existing turbine, tower, foundations and grid connection.
More energy from the existing turbine
ACT100 is a 49.2-metre lightweight retrofit blade developed specifically for the Senvion MM92 2 MW platform.
The blade has been designed to combine increased aerodynamic performance with lower structural mass, allowing greater energy capture while carefully controlling the loads transferred to the turbine.
This certificate is complementary to the ACT100 Design Conformity Statement previously issued by UL Solutions, which assessed the ACT100 retrofit configuration and its compatibility with the MM92 load requirements. Subject to site-specific evaluation for safe and reliable operation, the two certification milestones together provide independent evidence that ACT100 can deliver performance gains within the applicable MM92 design load envelope.
This offers a new option for ageing wind fleets: rather than dismantling an operational turbine, owners may be able to increase generation from existing assets while avoiding much of the capital cost, dismantling infrastructure and replacement, and permitting complexity associated with full repowering.
Sabrina Malpede, CEO of ACT Blade Europe, said:
“This milestone enables ACT Blade to offer MM92 owners a practical new option: boosting the productivity of an existing, grid-connected asset without a full turbine replacement. The independent evaluation is crucial to building confidence in this proposition. By upgrading the rotor instead of replacing the entire machine, owners can increase production and extend the value of an asset that is already permitted, connected, and operating—fundamentally changing the economics of wind farm optimization
Donald MacVicar, CTO of ACT Blade, said:
“ACT100 is designed to increase production from the same turbine platform while remaining within its design load envelope, subject to site-specific evaluation,” said Donald MacVicar. “The certification forms part of ACT Blade Europe’s wider ACT100 certification and deployment program ahead of commercial rollout”.
About ACT Blade
ACT Blade develops lightweight wind turbine blade technology aimed at improving energy production from existing wind assets. Its ACT100 retrofit solution is designed for the Senvion MM92 2 MW platform.
ACT100: More energy. Same wind turbine.