Envision Energy has announced that its next-generation two-bladed onshore wind turbine has surpassed 500 days of stable field operation, achieving a 99.3% availability rate and over 3000 equivalent full-load hours per year.
The prototype, built on Envision’s Model X onshore platform, uses a modular design and high-speed doubly-fed induction generator (DFIG) technology. The company said its performance is on par with traditional three-blade turbines deployed at the same site.
“By overcoming key technical challenges such as excessive system vibration and load imbalance – barriers that have long held back two-blade designs – Envision has once again redefined wind power innovation,” said Lou Yimin, senior vice president and chief product officer at Envision Energy.
The company said the turbine achieved a mean time between trips (MTBT) of 2,444 hours. It was field-tested at Envision’s smart wind power verification centre using a multi-level validation system and an industry-first multi-degree-of-freedom full-system loading test rig.
Envision said it defined dozens of unique operating conditions specific to two-blade designs, focusing on critical metrics to ensure commercial readiness.
Envision first explored two-blade technology in 2012 with the development of a 3.6MW offshore prototype at its Global Innovation Center in Denmark. The new generation is designed for cost efficiency, transportability, and modular deployment in varied green energy scenarios.
The company said the breakthrough strengthens its leadership in wind innovation and supports its mission to accelerate the global energy transition.