GREEF: Green Renewable Energy Earth Future
In a world grappling with environmental challenges and the urgent need for sustainable solutions, GREEF emerges as a beacon of hope. Our brand name, GREEF, is an acronym where each letter holds a profound meaning: G for Green, R for Renewable, E for Energy, E for Earth, and F for Future. This acronym is not just a name; it’s a promise, a mission, and a vision that drives everything we do. Our logo, a vibrant blend of green hues intertwined, visually encapsulates our commitment to a sustainable and thriving future for our planet.
GREEF specializes in providing advanced system solutions for wind, hydro, and solar energy, with globally deployed wind turbines renowned for ultra-low cut-in wind speeds, minimal noise emissions, and aerodynamically optimized designs that perform reliably across diverse climatic and environmental conditions. Our permanent magnet generators cover a power range from 500W to 5MW. Fifty percent of our core engineering team possesses 12-20 years of industry expertise, enabling customized end-to-end solutions encompassing holistic design planning, schematic development, 3D renderings, physical prototyping, volume production, quality control, and after-sales service. Our rapid-response system significantly reduces clients’ time and cost pressures.
Products exported to Europe, South America, North America, and global markets carry CE certification with 3-5 year warranty periods, while quality and on-time delivery are guaranteed by Alibaba Trade Assurance. Since inception, we’ve upheld our mission to deliver economical and reliable power solutions through renewable energy innovation, accelerating global green energy transition. Our credo “Green Renewable Energy for Earth’s Future” embodies our conviction in a sustainable tomorrow – our brand story transcends actions to encompass our purpose and the impact we strive to create.
GREEF ENERGY is audited supplier which is inspected by SGS,TUV, BUREAU VERITAS &INTERTEK. Payment protection ,On-time shipment and products quality are gruanteed by Alibaba.com
50 % staffs in GREEF engineer team have 12-20 years’ experience in the wind turbine field. All our sales team are both CHINESE and ENGLISH speaker with at least 3years experience .
GREEF ENERGY can customize overall system solution with strong flexibility and competitive capabilities, our service that can be delivered include but are not limited to: overall design plan, principle drawing, 3D renderings, sample physical, bulk product delivery, quality control, and after-sales service. With a fast service system, we can assist our customers to save cost and time.
Power, rotated speed, voltage can be customized
Model GH-1KW GH-2KW GH-3KW GH-5KW Rated Power 1000W 2000W 3000W 5000W Max Power 1500W 3000W 4000W 7000W Start Wind speed 3m/s(6.72mph) Rated Wind Speed 9m/s(20.1mph) 9m/s(20.1mph) 9m/s(20.1mph) 10m/s(22.4mph) Working Wind speed 4-25m/s(8.95-56 mph) Safety Wind speed 50m/s(112mph) Blades Rotor Diameter 2.8M(9.18ft) 3.6M(12.47ft) 4.6M(15.1ft) 6M(16.4ft) Blades Material&Quantity FRP /3PCS Top Weight 46kg 60kg 130kg 180kg Tower Height 6m(39.36ft.) Free stand tow...
/uploads/3adbe1f0.mp4 Product Introduction Grid-Tied Controller is technologically the most important component in wind generator on-grid systems, which convert Three AC current from wind turbine into DC current then send to the grid-tie invertor. GT-PCTC series wind professional grid-tied controller which have Double safety control systems: PWM constant voltage system and three-phase dump load brake system, This innovative solution also interfaces with solar inverters from brands like Gr...
Product Introduction INVT grid-connected inverter products demonstrate excellent performance in PV systems by virtue of a number of core technology advantages. Its intelligent diagnostic system can accurately locate PV string faults and quickly analyze the abnormalities on the AC side through real-time waveform recording. Together with the optional Arc Fault Protection Function (AFCI), it builds up a complete safety mechanism from detection to response. The product adopts a wid...
The product adopts stand type design, beautiful shape, and convenient movement; including the mainstream market inverter protocol, directly communicates; adopts a comprehensive and multi -level battery protection strategy and fault isolation measures to ensure the safe operation of the system.Widely used in small commercial and family energy storage. Product Paramenters Model GBP48-280H GBP48-314H GBP51.2-280H GBP51.2-314H Nominal volt(V) 48 51.2 Cell specif...
Attributes and advantages of the TYP Magnet motor Superior efficiency regardless of speed or load TYP Magnet motors present superior efficiency regardless of speed or load, saving up to 30% in comparison to induction motors driven by frequency inverters. Product Paramenters Part of the product model parameters Maximum radial load-100,000 hours-Fr (kN) Frame 1000 rpm 1500 rpm 3000 rpm L L/2 L L/2 L L/2 132S 1,4 1,6 0,9 1 0,9 1 132M 1,4 1,6 0,9 1 0,9 1 132M/L 1,4 1,6 0,9 1 0,...
GBP series lithium iron phosphate battery is a new type of environmental protection standby power supply developed forenergy storage and power reserve applications. The system adopts the environmental protection lithium iron phosphate battery and the customized BMS system to effectively manage the battery cells, which has better product performance and safety reliability than the traditional battery. The product has longer cycles of charge and discharge, high power density and long service l...
/uploads/45.mp4 Technical specification 10kW On-grid solar system Solar Panel Quantities 18PCS Inverter 1 Set PARTS&TOOLES 1 UNIT PV CABLE 200m PACKAGE PROTECTION &CHARGE 1 UNIT The above system is for reference only, our company can change the system programme suitable for you according to your needs. Please contact us if you have any needs. Product Show System Solution
https://www.greefenergy.com/uploads/MPPT-WIND-CHARGE-CONTROLLER.mp4 Product Introduction 1. Smart MPPT(Boost & Buck) Function: Wide charge range. 2. Configurable Power Curve: Users can set parameters, and the controller will automatically generate the power curve. 3. Three-Stage Charging: The system uses a three-stage charging method to ensure charging efficiency and battery lifespan. 4. Wind Resistance and Speed Reduction: The system has a unique electrical speed reduction feature to ef...
Technical specification Product Show Product Solution We can make customized solar generation system solutions according to your requirements Project case Why Choose Us
Technical specification Product Show Product Solution We can make customized solar generation system solutions according to your requirements Product Show Why Choose Us
Model GH-1KW GH-2KW GH-3KW GH-5KW Rated Power 1000W 2000W 3000W 5000W Max Power 1500W 3000W 4000W 7000W Start Wind speed 3m/s(6.72mph) Rated Wind Speed 9m/s(20.1mph) 9m/s(20.1mph) 9m/s(20.1mph) 10m/s(22.4mph) Working Wind speed 4-25m/s(8.95-56 mph) Safety Wind speed 50m/s(112mph) Blades Rotor Diameter 2.8M(9.18ft) 3.6M(12.47ft) 4.6M(15.1ft) 6M(16.4ft) Blades Material&Quantity FRP /3PCS Top Weight 46kg 60kg 130kg 180kg Tower Height 6m(39.36ft.) Free stand tow...
/uploads/3adbe1f0.mp4 Product Introduction Grid-Tied Controller is technologically the most important component in wind generator on-grid systems, which convert Three AC current from wind turbine into DC current then send to the grid-tie invertor. GT-PCTC series wind professional grid-tied controller which have Double safety control systems: PWM constant voltage system and three-phase dump load brake system, This innovative solution also interfaces with solar inverters from brands like Gr...
Product Introduction INVT grid-connected inverter products demonstrate excellent performance in PV systems by virtue of a number of core technology advantages. Its intelligent diagnostic system can accurately locate PV string faults and quickly analyze the abnormalities on the AC side through real-time waveform recording. Together with the optional Arc Fault Protection Function (AFCI), it builds up a complete safety mechanism from detection to response. The product adopts a wid...
★ Bureau, SGS, TUV, INTERTEK Verified Supplier
★ Top 3 suppliers of generators products with all 5-stars on Alibaba.com
★ Products quality and on time delivery are guaranteed by Alibaba.com
★ 12-20 years'experience engineer&QC team
★ 7days*24hours on time service
★ Focus on after-sales service
★ One-stop customized system solutions
★ Trade experience with more than 60 countries
★ CE, RoHS certificated
★ OEM,ODM are accepted