Vertix — Commercial Wind

GV-3KW Vertical Axis Wind Turbine

3 kW rated output. 2.3 m rotor. 8 m tower. Cut-in at 2.8 m/s. IEC 61400-2 and IEC 61400-12 certified. Coreless disc PMG generator. The smaller of the two Greef-manufactured GV turbines — suited to commercial rooftops, smaller industrial sites and hybrid energy systems across Pakistan.

At a Glance

GV-3KW — Key Facts

3 kW
Rated Power

4 kW maximum. Generates from 2 m/s up to 25 m/s working wind speed continuously.

2.8 m/s
Cut-in Speed

Begins generating in light wind. Suitable for coastal and peri-urban industrial sites with moderate wind.

8.4 m²
Swept Area

2.3 m rotor diameter. 3.65 m FRP blades. More compact and lighter than the GVH-5KW.

20 yr
Design Life

IEC 61400-2 / IEC 61400-12 certified. IP54. Electromagnetic brake + PWM. 3-year product warranty.

Vertix GV-3KW Wind Turbine
Full Specification

GV-3KW Technical Data

ParameterValue
Rated Power3 kW
Max Power4 kW
Start Wind Speed2.8 m/s
Rated Wind Speed12 m/s
Working Wind Speed2 – 25 m/s
Safety Wind Speed50 m/s
Rotor Diameter2.3 m
Blade Length3.65 m
Blade MaterialFRP / 3 blades
Swept Area8.395 m²
System Weight300 kg
Tower Height8 m
Generator TypeAxial Flux PMG — Coreless Disc
Rated Speed180 RPM
Start Torque< 1 N·m
Output Voltage48 – 380V
Protection MethodElectromagnetic Brake + PWM
Noise Level< 30 dB
Protection GradeIP54
Operating Temperature−40°C to 50°C
Shell MaterialAluminium Alloy
Design Life20 years
Product Warranty3 years
CertificationsIEC 61400-2 • IEC 61400-12 • CE
Generator Technology

Coreless Disc Generator

The GV-3KW uses a coreless disc axial flux PMG — no iron core means no cogging torque, no magnetic drag, and a start torque below 1 N·m. The turbine begins generating at wind speeds where iron-core generators are still stationary. Vibration is eliminated at the source, cutting noise and mechanical stress simultaneously. Service life is rated at 8× longer than conventional motor-type alternators, and the generator can be rebuilt rather than replaced at end of primary life.

  • Start torque <1 N·m — generates in wind that stops conventional turbines
  • No iron-core cogging — vibration-free, <30 dB operation
  • Patent-pending precise coil winding technology
  • 8× longer design life vs conventional motor-type generators
Vertix GV-3KW coreless disc generator
Solar Integration

Already Have Solar? The GV-3KW Works With It.

Solar generates between roughly 9am and 4pm, and nothing at night. The GV-3KW is designed to generate exactly when your solar system cannot — overnight, on overcast days, and during the early morning and evening hours when commercial loads are often at their highest.

Off-Grid Systems

Add Wind to Your Battery Bank

The GV-3KW connects to your existing battery bank via an MPPT wind charge controller — the same concept as your solar charge controller, but for wind. Your batteries now receive charge from two independent sources. When solar generation is zero, wind generation continues. The result is a more consistently charged battery bank and fewer hours running on generator.

On-Grid Systems

Feed Wind Into the Grid Alongside Solar

If your existing solar system is grid-tied, the GV-3KW connects through an on-grid wind controller and grid-tie inverter, feeding generated units directly into your facility consumption at the same time as your solar system. Both sources offset grid import simultaneously. There is no conflict between the two — each operates on its own control path to the same inverter bus.

Hybrid Systems

Wind + Solar + BESS Together

The most complete integration: solar panels and the GV-3KW both feed into a hybrid inverter alongside a BESS. The system charges batteries from whichever source is available and dispatches to load on priority. Wind at night charges the BESS for morning peak load. Solar during the day covers generation and tops up storage. The two sources are complementary by nature.

What You Need

Connecting the GV-3KW to an existing solar system requires a wind charge controller or on-grid wind controller matched to the turbine output voltage, and in a hybrid setup, a hybrid inverter with a dedicated wind input or DC coupling. Charania Renewables scopes the full integration — controller selection, battery sizing, inverter compatibility and wiring design — as part of our standard assessment.

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Applications

Where the GV-3KW Is Deployed

Commercial Rooftop

Flat Roof Industrial & Office

IP54 rated for permanent outdoor installation. 3kW output at rated wind speed with cut-in at 2.8 m/s — generating in conditions where horizontal-axis turbines are stationary. Pairs with rooftop solar to produce after sunset.

Ground Mount

Factory Yard & Industrial Estate

8m tower supplied as standard. Civil scope — foundation type and depth — specified to your site conditions. Open exposure and consistent prevailing wind give the GV-3KW its best output profile.

Hybrid Integration

Wind Layer in a BESS-Backed System

The GV-3KW is sized as the wind generation layer in a hybrid architecture alongside solar PV and battery storage. Start torque below 1 N·m means it begins contributing from first available wind — including overnight and overcast periods.

Related
GVH-5KW — 5 kW VAWT → Industrial Energy Solutions → Battery Storage → Hybrid Engineering & Design → Lmaxx Solar Mounting →
Get Started

Add Wind Generation to Your Site

Share your site location and load profile — our team will assess your wind resource, check compatibility with your existing solar system, and model a hybrid generation system for your site.

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