Over 4,400 units installed worldwide on account to it's simple reliable and proven design.
No gearbox means no gearbox failures. Lower maintenance. Less downtime.
These turbines have decades of life left. A proper refurbishment returns them to original specification.
All refurbished components come with a 2-year warranty. Full O&M packages available with 95% availability guarantee.
In 1993, ENERCON changed the wind industry forever.
The E-40 was the world’s first gearless wind turbine. No gearbox. Less maintenance. Higher reliability. Aloys Wobben and his team built a machine so robust that over 4,400 units were installed worldwide.
Today, those same qualities make the E40 perfect for second-life projects. Simple. Reliable. Proven.
“The direct drive concept proved to be so reliable and superior that Aloys Wobben systematically adopted it. Since then, the direct drive has been part of the ENERCON DNA.”
— Arno Hildebrand
Head of Turbine Engineering, ENERCON R&D
| Parameter | E40 (500kW) | E40/E44 (600kW variant) |
|---|---|---|
| Rated power | 500 kW | 600 kW |
| Rotor diameter | 40.3 m | 44 m |
| Hub heights | 42m / 48m / 65m | 46m |
| Cut-in wind speed | 2.5 m/s | 3 m/s |
| Rated wind speed | 12.0 m/s | 11.8 m/s |
| Cut-out wind speed | 25 m/s | 25 m/s |
| Rotor speed (max) | 38 rpm | 33 rpm |
| Generator type | Synchronous (direct drive) | Synchronous (direct drive) |
| Tower type | Steel tube / concrete | Tubular steel (2 sections) |
| Total weight | ~150 tonnes | ~150 tonnes |
