This technology will enable the reduction of the cost of kW installed costs to a half and reduce Return of Investment (ROI) to 3-4 years (without subsidization) instead of the current ROI of 10-7 years (with subsidization).

Winflex technology is based on a cost effective solution for wind turbines (blades and other components) due to a new designed rotor that can be produced from light flexible and inexpensive cloth sheets made out of composite materials.

Project background

The project is based on the invention of Dr.V.Kliatzkin. First turbine construction began in 1980 at “Sivan Co”. Following the successful field test results, the Israeli Ministry of Energy and Infrastructure has supported the R&D process.
During the development period two successful prototypes (10kW and 200kW) have been built and tested.
At present, 1000kW turbine is being developed.

Comparison to available technologies

	Vestas-V27-225kW	Sivan2 (200-250 kW)
Power, kVA	225	200
Height, m	33.5	30
Diameter , m	27	15
Cut-in, m/s	4	3.8
COE, $/kWh	0.07	0.03
Cut-off, m/s	27.5	28
Survival  speed, m/s	60	30*/60**/90
Cost, $/kW	700-1200	390-430

	Vestas-V52-850kW	Winflex1000 KW (Predicted)
Power, kVA	850	900
Height, m	44-74	40
Diameter , m	52	40.5
Cut-in, m/s	4	4
COE, $/kWh	0.07	0.03
Rated output wind speed, m/s	15	15
Cut-off, m/s	27.5	28
Survival  speed, m/s	60	30*/60**/90
Cost, $/kW	1800-2100	700

*Bending speed  ,** 10% Damage

Highlights

1. Very high efficiency :more than 40%.
2. Decrease cost of kW installed at least in 50%.
3. Decrease cost of energy more than 50% less (COE).
4. Simple control system.
5. Optimal power plant factor more than 30% at average wind speed of 6-7.5 m/s.
6. High safety level.