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Kansas Wind Power-W, 13569 214th Road, Holton, KS 66436       Phone/Fax: 785-364-4407

Bergey Windpower Wind Turbines  1kW, 10 kW, 15 kW

A 1 year payback on investment may be possible, then free electricity.

Tax Credits, Grants and Depreciation may greatly reduce your costs by 80%.
Contact us for a wind and cost analysis for your location.



Monthly Kilowatt Hours Energy Output
Estimate for Average Wind Speeds

Wind Ave 8 mph 10 mph 11 mph 12 mph 13 mph 14 mph 15 mph 16 mph
Bergey  1 55 115 150 185 220 245    
Bergey 10 409 820   1377   2027   2700
Bergey 15   1933 2392 3000 3500 4133 4633 5242

Bergey EXCEL 10 Wind Turbine

AWEA Rated Power: 8.9 kW @ 24.6 mph (11m/s)
Peak Power: 12.6 KW
AWEA Annual Energy: 13,800 kWh @ 11 mph (5 m/s) average
Cut-In Wind Speed: 5.6 mph (2 m/s)
Cut-Out Wind Speed
: None
Furling Wind Speed: 31-45 mph (14-20 m/s)
Max. Design Wind Speed: 134 mph (60 m/s)
Nominal Rotor Speed: 0-400 rpm
Type: 3 Blade Upwind, Horizontal Axis
Rotor Diameter: 23 ft. (7 m)
Weight: 1200 lb. (545 kg)
Overspeed Protection: AUTOFURL
Gearbox: None, Direct Drive
Temperature Range: -40 to 140 F (-40 to 60 C)
Towers: Guyed and Non-Guyed 60-160 ft (18-49 m)
Alternator: 3Ø Neo Permanent Magnet
Inverter: 12 kW Powersync II (Outdoor Rated NEMA 3R Enclosure)
     Remote Monitoring via Internet & Smart Phones (Optional)

  Sample Cost  
10 kW and 100 ft. Guyed Lattice Tower

EXCEL 10 Wind Turbine    $35,000
100' Guyed Lattice Tower  $20,000
Tower Wiring Kit  $2000
Anchor Bolt Template $625
Shipping & Delivery  $4000
Foundations  $5000
250' Wire Run  $3600
Electrical Contractor  $2000
Turbine Set-Up & Crane  $3000
Misc. Costs  $800
Building Permit  $800
Sales Tax  $7000
Total  $80,825
Prices change rapidly. Actual cost will vary.
Double the output by using the 15 kW Turbine for about $10,000 more.


Bergey EXCEL 15 Wind Turbine


FARMS: The Excel 15 is well suited for farming operations in areas with sufficient wind resources. An Excel 15 can produce as much energy as a 35 Kilowatt solar electric system, with an 80% smaller footprint. Grants are available for agricultural producers and rural small businesses through the USDA's Rural Energy for America Program.


AWEA Rated Pawer 15.6 kW at 11m/s (24.5 mph)
AWEA Rated Sound Level 48.5 dB(A)
AWEA Rated Annual Energy 29,800 kWh at 5 m/s (11 mph)
Start-up Wind Speed 4.5 m/s (10 mph)
Cut-in Wind Speed 2.5 m/s (5 mph)
Nominal Power 15 kW @12 m/s (27 mph)
Cut-Out Wind Speed None
Max Design Wind Speed 60 m/s (134 mph)
Type 3 Blade Upward
Rotor Diameter 31.5 ft (9.6m)
Max Rotor Speed 150 RPM
Blade Pitch Control None, Fixed Pitch
Over Speed Protection Blade Stall, with dump load
Gearbox None, Direct Drive
Temperature Range -40 to +60 Deg. C (-40 to +140 Deg. F)
Generator Permanent Magnet Alternator
Output Form 3 Phase AC, Variable Frequency 240 VAC, 1Ø, 60 Hz with Powersync III inverter




BWC EXCEL Wind Turbine  The BWC Excel is a ruggedly built turbine that comes with the longest warranty (10 years) in the industry.  The BWC EXCEL was introduced in 1983 and it has been installed at over 1600 sites around the world. 

10 KW BWC EXCEL 48 volt Battery charging  $35,000 23' Blade diameter. Suited for large rural homes, remote villages and facilities, eco-tourism resorts, and larger telecommunications sites. Includes a voltage regulator.

10 KW BWC EXCEL  Grid connect $35,000 23' Blade diameter. Can provide most of the electricity for an average total electric home at moderate wind sites.  The Powersync ll  inverter is the most advanced in the industry and it carries a full UL certification to the latest utility standards.

15 KW BWC EXCEL Grid Connect 31.5' Blade diameter. Includes 20 kW Powersync lll and dump load,  AWEA rated power 15.6 kW, Peak Power 21.8 kW, AWEA Annual Energy 30,100 kWh, cut-in wind speed 5 mph, start-up wind speed 10 mph, Can be used on the Self-Supporting towers up to 100'.  $45,000

Guyed Lattice Tower  is available in heights of 18 m (60 ft.) to 37 m (160 ft.). Prices range from
$11,000 to $24,000.
Tilt-up versions of these towers are available for sites without crane access.
           Prices range from a  60' tower for $14,000, 80' is $16,000 and 100' tower is $18,000. Tower raising kit is $3000 and GripHoist kit is $4000.
Self-Supporting Lattice towers range from 60' for $11,000 to 160' for $36,000.
Self-Supporting Monopole Tubular towers range from 60' for $13,000 to 120' for $29,000. A list of requirements for customer supplied towers is available.


The EXCEL 10 is a 7 meter (23 ft) diameter three-blade upwind turbine that achieves high reliability through rugged construction and a minimum of moving parts.

  The rotor on the EXCEL has three pultruded fiber reinforced plastic (FRP) blades which are rigidly attached at their hubs.  The EXCEL blades are flexible in torsion and have a unique pitch weight attached to their outboard leading edge.  The patented Powerflex® blade system provides passive blade pitching as a function of rotor speed.  Thus, the blades are set for a higher pitch to aid start-up, but “flatten out” at speed to improve operating aerodynamic efficiency.  The airfoil used on the EXCEL is a proprietary design (BW-3) developed specifically for low Reynolds Number conditions.  This thin, highly cambered section is not affected by normal dust and residue build-up on the blade leading edge.  BWC offers an Extra-Stiff Blade Option for high-turbulence or high icing conditions.  These blades are often painted black for ice-shedding.

The blades attach directly to the outside shell of the EXCEL’s purpose-built direct drive 38-pole permanent magnet (PM) alternator.  The alternator has an “inside-out” configuration in that the outer shell (containing the magnets) rotates about the fixed internal stator structure.  Thus, the alternator incorporates the rotor hub, has no central rotating shaft, puts the front bearing in the rotor plane, and has no brushes.  The output is a sinusoidal three-phase alternating current that varies in voltage and frequency with wind speed.

  The EXCEL wind turbine series is nominally rated at 10 kW.  In a battery charging  application, however, there is an inherent load matching problem between permanent magnet alternators and battery banks.  The EXCEL-R is optimized for low wind speed performance, which maximizes energy production.  But providing the best performance in low winds results in some reduction in peak power under high wind conditions.  Therefore, the EXCEL-R is rated at 7.5 kW.

  The turbine is aligned into the wind by a tail assembly.  The tail boom and and integrated rotor/alternator assembly attach to the mainframe assembly, which incorporates the yaw-axis slip-rings and the tower interface. The geometry of the mainframe creates the passive Autofurl® high wind speed protection.  The mainframe offsets the rotor and yaw axes such that rotor thrust produces a furling moment about the yaw-axis.  The weight and inclined pivot of the hinged tail provides a preset resistance to the rotor furling moment.  Overspeed control is initiated at 13-15 m/s (30-34 mph) when rotor thrust overcomes the tail resistance and restoration is caused by gravity as the wind speed subsides.  The EXCEL has no shut-down wind speed.  The turbine can be manually shut-down using a furling winch installed at the base of the tower.

  Corrosion protection for the EXCEL is provided by hot-dip galvanizing (mainframe, tower adapter, and tail boom), electro-zinc plating, and polyurethane paint systems.  FRP components, such as the blades, are protected by ultraviolet-inhibiting resin additives and sub-surface “scrim cloth” UV barrier.  The blades have polyurethane leading edge tape for protection against erosion.  The EXCEL’s four sealed bearings are provided with static drain brushes to protect against discharge pitting.  A Marine Corrosion Option is available which substitutes stainless steel hardware and provide full encapsulation of the stator windings.

  The EXCEL has only four moving parts, no adjustable elements, and no grease fittings.  No scheduled maintenance is required beyond biannual inspections and replacement of the outer three feet of blade leading edge tape every 4-5 years.  Static components of the EXCEL are designed for a 50 year life and dynamic components are designed for a 30 year life. Predicted major overhaul requirements include blade refinishing and alternator bearing replacement at 15 years or 225,000 kWh’s.

  The VCS-10 controller, which comes with the EXCEL-R wind turbine, provides controlled rectification through a three-phase semi-converter.  The semi-converter uses phase modulation to control charging voltage and current based upon the battery bank voltage.  Safe operation of the EXCEL turbine is independent of the load conditions, allowing the controller to unload the turbine during regulation.  No auxiliary load is required.  The VCS-10 is fully solid-state and is passively cooled.  It incorporates an LCD display of DC bus voltage and status lights to indicate the charging mode of the unit.

  Since its introduction in 1983 the EXCEL has distinguished itself as the one of the most reliable wind turbines ever produced.  The Wisconsin Power & Light SWECS test program, the largest of its kind (involving SWECS from UTRC (Windtech), Windworks, Jacobs, Enertech, and Carter), showed a 99.1% availability (9.0% higher than any other unit) and an O&M cost of $0.0026/kWh for the EXCEL over a five year test program.  This is less than half the O&M costs that have been typically  reported for grid-intertied photovoltaic systems (eg, PG&E test program). 

  Another utility, Pacific Power & Light, through its subsidiary OnSite Energy, installed leading remote wind turbine products (3 kW Northern Power Systems HR-3,  10 kW BWC EXCEL, and 17.5 kW Jacobs 10-23) on a telecommunications site at Duncan Mountain, Idaho in November, 1984 for the purposes of product and technology evaluation.  The site is very remote and accessible only by helicopter during the winter.  Since installation, over fourteen years now, the BWC EXCEL has achieved nearly 100% availability.  The next most reliable turbine in the PP&L test program had an 84% availability in the first five years.  The other turbines at the site have now been decommissioned and the EXCEL is providing prime power to the telecommunications facility.

  The BWC EXCEL is the best selling wind turbine in the size range of 2-20 kW in the world.  Over 1600 units have been installed in more than 30 countries.


Bergey BWC XL.1 1000 watt No longer manufactured.  Limited Repair parts available. For 12, 24, 36, 48 volt battery charging.  8.2 ft diameter Rotor
The Bergey BWC XL1 is an up-wind, horizontal-axis, three-bladed turbine. The blades are made of strong pultruded fiberglass with SH3045 airfoil. They attach directly to a specially designed very-low-speed permanent magnet alternator which uses state-of-the-art neodymium super-magnets. These units also have enhanced turbine corrosion protection for marine sites and increased durability. The cut-in speed is 6 mph with a 1000 watt output at about 25 mph. 120 mph is the maximum design wind speed. Over speed protection is provided by the proven BWC AutoFurl passive sideways furling system. The generator and rotor turn partially sideways to the wind starting at about 30 mph. 5 year warranty from Bergey Windpower Co.  We have known Bergey since the late 1970's.

Start-up Wind Speed:  3 m/s (6.7 mph)
Cut-in Wind Speed:      2.5 m/s (5.6 mph)
Rated Wind Speed:      11 m/s (24.6 mph)
Rated Power:                 1000 Watts

Maximum Power:        ~ 2000 Watts
Cut-Out Wind Speed:  None
Furling Wind Speed:  13 m/s (29 mph)
Max. Design Wind Speed:  54 m/s (120 mph)

Blade Pitch Control:     None, Fixed Pitch
Overspeed Protection:  AutoFurl

REPLACEMENT PARTS Some of these parts are no longer available. Units with serial numbers ending with "A" have a black main frame. Starting around 2006, the "C" series has stainless steel main frame with different tower adapter, slip rings, brushes, diode assembly.

Blade Set               W060  20 lbs  N/A
Rectifier Assembly   W063 4 lbs  $145

Triple Slip Ring is not available.
Double Slip Ring C2 
W077    2 lbs  $50
6365     1 lb

Tilt-up Tubular Towers  Wind generator output is normally better on tall towers. The wind is usually faster and smoother up higher. The tower can be installed without concrete work in areas with good soil strength and no rocks (that would impede the screw-in guy-wire anchors). In weak or rocky soils the use of concrete to fix the anchors is required. Proper grounding is an important element in protecting the system from lightning damage. Tower kits include galvanized 10 ft. 4.5 in. diameter tubular tower sections and associated hardware, guy anchors, guy wires and gin pole. Truck shipping.  60'   1TU18     80'     1TU24     100'   1TU30   


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Last modified: 02/01/23 
Kansas Wind Power - W,  13569 214th Road, Holton, KS 66436   785-364-4407,  All prices and specifications are subject to change without notice.