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%

Abstract: A vineyard in southern Spain faced high electricity tariffs and irrigation-related power pressure. GREEF Energy custom-designed a 20kW permanent magnet wind turbine + 15kW solar PV + GREEF intelligent controller + Deye hybrid storage inverter wind-solar-storage hybrid system. After six months of operation, annual generation exceeds 42,000 kWh, electricity bills dropped by 76%, and energy independence is significantly improved.

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.

4. Real Data & Results

5. Customer Testimonial

Vineyard owner: “After installing the GREEF 20kW permanent magnet wind turbine together with the Deye hybrid storage inverter, the system runs very stably. Irrigation electricity costs dropped dramatically, and we have reliable backup power during grid issues. It truly helps us achieve green and efficient production!”

Related recommendations:

· [GREEF 20kW Permanent Magnet Generator – product details]

· [Deye Hybrid Inverter – windsolar hybrid solution]

· [Request a quote for similar vineyard projects]