Maximum flexibility.

Maximum output.

Meet the N149/4.0-4.5 onshore turbine for light and medium wind regions

Landscape with Wind Turbine


Maximum flexibility. Maximum output.

Meet the N149/4.0-4.5 onshore turbine for light and medium wind regions

28 %improved output

30 %bigger swept area
for higher output

103.6 dB(A)at a nominal
power level of 4 MW

For low and medium
wind conditions

Warranted performance
in icing conditions

Up to 28% additional AEP

The N149/4.0-4.5 in comparison with the N131/3600

AEP Diagram AEP Diagram

The N149/4.0-4.5 turbine is Nordex’ highest yielding onshore turbine for light and medium wind regions. It has a 28 per cent increase in rotor sweep and a variable power output of 4.0-4.5 MW.

The N149/4.0-4.5 is the latest development stage of its successful Delta platform: the Delta4000 series. For the Delta4000 product line, we took the Delta Generation’s fundamental design and transferred it to the 4-megawatt class, with the help of performance-enhancing concept adaptations. At the same time, we kept our focus on driving down the cost of energy.

Wind Turbine

Improved output

The highest yielding onshore turbine for light and medium wind regions in the 4.0-4.5 MW range.

LWA Diagram LWA Diagram

Greater nominal output

The N149/4.0-4.5 has a variable maximum output of between 4.0 and 4.5 MW, creating a yield of up to 28 per cent higher compared to the N131/3600.

Proven rotor blade design – 
increased swept area

The one piece NR74.5 rotor blade developed in-house with a sweeping area of 17,460 square metres. Nordex essentially kept the same rotor blade structure while optimising the design for transport and production.

Optimized hub heights

Hub heights of 105, 125 and 164 meters for light and medium wind sites help to achieve higher yield.

Reduced sound power levels

Despite the substantial increase in output, the maximum sound power level of the N149/4.0-4.5 is between 103.6 dB(A) and 106.1 dB(A), making it currently the quietest turbine in the 4.0-4.5 MW class for light wind sites.

Turbine Operating Efficiency Turbine Operating Efficiency

Operating Efficiency

Designed to keep maintenance costs at a minimum

Design lifetime

The turbine is designed for a working life of 20 years while, depending on wind farm site conditions, an operating life of up to 25 years can also be achieved.

Reduced service effort

The technical concept of the N149/4.0-4.5 minimises the service effort over its entire working life: with each component subsequently designed for minimal maintenance. Furthermore, the turbine has been designed 
to cater for a mobile crane solution to exchange main components with minimal costs and effort.

Wind Turbine Engine

Optimised Design

Better reliability and economic efficiency

Proven drive train concept

The drive train concept is based on the proven 
3-point suspension structure.


The transformer and converter are integrated within the nacelle to achieve higher yield as a result of reduced electrical losses.

Economical electrical system

Like the first multi-megawatt turbine in the year 2000, the N149/4.0-4.5 is fitted with a double-fed asynchronous generator and a partial scale converter 
for better reliability and economic efficiency.

Turbine Maintenance Turbine Maintenance

Operations & Maintenance

effortless adaptation to requirements and environments

Turbine Control System

The proven Nordex Control 2™ system is a state-of-the-art industry SCADA system with easy and secure web access. With its modular structure and standardised interfaces, Nordex Control 2™ can be adjusted flexibly to meet the customer’s SCADA requirements.


The N149/4.0-4.5 meets all grid requirements of the national and international markets, such as the German high voltage directive (VDE-AR-N 4120 TAB Hochspannung) or the ENTSO-E Grid Codes NC RfG.

Standard operating conditions

The standard turbine can be operated at sites with average temperatures ranging from 40 degrees Celsius to as low as minus 20 degrees Celsius. Turbines of the cold climate variant (CCV) are operational in outside temperatures as low as minus 30 degrees Celsius.

Anti-icing System

The market-leading rotor blade Anti-icing System exploits the excellent wind resources available in cold climate regions to the full, leaving no spare MWh untapped with a warranted performance level.


N149/4.0-4.5 Brochure

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