Senvion Retrofit Solutions
Keep your Senvion turbines running profitably without original OEM support. NWT retrofits replace the turbine software to give you 100% independence, full data and parameter access, lower O&M costs, and modern grid compliance across the whole MM series.
Choose your model
The model number is the rotor diameter in metres. Select a turbine for its retrofit details.
MM70 · from 2002
70 m rotor
DFIG generator with frequency converter and DC pitch.
MM77 · from 2002
77 m rotor
Bestseller. Double-fed generator, low noise emission.
MM82 · from 2004
82 m rotor
Built for height-restricted, high wind speed sites.
MM92 · 2013–2022 · 2,050 kW
92 m rotor
Large rotor for medium to low wind regimes.
What the retrofit delivers
100% Senvion independence
Full access to data and all parameter settings.
Higher AEP
Optimized production with mechanical load control.
Open spare parts supply
MOOG / L&B pitch, Woodward and ABB converter.
Modern grid compliance
Curtailment and reactive power control.
One simple Bachmann solution
Every turbine in the MM series runs a Bachmann controller. We simply replace the Compact Flash card with new software — the turbine is back up within 1–2 hours. No wiring, sensors, pitch, or converter changes, and the safety chain (overspeed guard, vibration protection) stays intact.