20kW Permanent Magnet Wind Turbine + Solar-Storage Hybrid System Powers a Vineyard in Southern Spain: Annual Output >42,000 kWh, Electricity Costs Cut by 76%

1. Project Background & Challenges

The vineyard is located in Andalusia, southern Spain, with average annual wind speeds of 8.5–9.5 m/s and abundant solar radiation. The owner originally relied on grid electricity, paying about $19,500/year. Key pain points included:

• High irrigation electricity consumption during summer, with expensive tariffs causing cost pressure;
• Desire to increase renewable energy share, reduce carbon emissions, and cope with grid fluctuations;
• Need for a reliable system that generates power and provides backup electricity.

2. Customized Solution

• Wind turbine: 20kW low-speed permanent magnet synchronous generator, low start-up torque, cut-in wind speed 2.7 m/s;
• Solar PV: 15kW high-efficiency solar panel array;
• Controller: GREEF PCTC-20kW intelligent MPPT wind controller;
• Inverter: Deye hybrid storage inverter – supports wind-solar hybrid, smart energy management, and on-grid / off-grid switching;
• Battery storage: 40kWh LiFePO₄ battery bank;
• System feature: Wind-solar + storage design – priority to self-consumption during daytime; surplus stored or fed into grid; battery supplies power at night or during grid failures.

3. Implementation & Technical Details

Installation and commissioning completed in 38 days:

• The wind turbine uses a high-strength tower and IP65 protection, suitable for Mediterranean climate;
• System topology: PMG + Solar → GREEF controller → Deye hybrid inverter → loads + battery + grid;

Both Deye inverter and GREEF controller support remote monitoring via App, fully compliant with local grid-connection standards.