Senvion - Nordic Wind Technology

Senvion Retrofit Solutions

Break your dependency on Suzlon. 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 S-series fleet.

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.

MM100 · from 2011 · 2,000 kW

100 m rotor

Low-wind rotor design, low sound level for onshore.

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.

We give the power back

20+ years of controller expertise · 487+ installed solutions