Integrated Hybrid Photovoltaic + Wind System with Batteries for Powering Two Multifunctional Buildings

 S.C. Enjoy Green S.R.L.

Integrated Hybrid Photovoltaic + Wind System with Batteries for Powering Two Multifunctional Buildings

1. Introduction

In the current context of the energy transition and the need for energy autonomy for isolated or semi-autonomous infrastructures, the use of hybrid systems (photovoltaic + wind) has become a sustainable, efficient and scalable solution.

This paper presents an integrated system for producing and storing electricity with a capacity of 20 kWh, intended for powering two multifunctional buildings.

2. System Purpose

The purpose of this system is to provide fully renewable electricity for:

- Building A: office spaces – estimated daily consumption: 7 kWh

- Building B: workshops, laboratory, living space – estimated daily consumption: 11 kWh

- Adjacent systems:

- Water well pumping – 2 kWh

- Space heating and cooling – 5 kWh

Total estimated daily consumption: 25 kWh

3. Hybrid System Composition

3.1. Energy production:

- Photovoltaic panels – installed capacity: 10 kW

- Wind turbine – installed capacity: 10 kW

Total combined daily energy potential (average): 40–70 kWh

3.2. Storage system:

- LiFePO4 (lithium-iron-phosphate) batteries – total capacity: 20 kWh

– Daily usable: approx. 16–18 kWh

4. Sizing and Energy Calculation

Daily consumption table:

Offices (A): 7 kWh

Workshop + home (B): 11 kWh

Water well: 2 kWh

Heating/cooling: 5 kWh

Total: 25 kWh

5. Advantages of the proposed system

– Partial to total energy autonomy

– Carbon emission reduction

– Redundancy (multiple sources)

– Modular flexibility

– Low operating costs

6. Possible Operating Scenarios

Clear day, no wind: Panels power and charge batteries

Windy night: Turbine power and partially charge

Cloudy day, no wind: Battery operation

Sunny and windy day: Overproduction – batteries charge fully

7. Technical Considerations

– Three-phase hybrid inverter

– MPPT controller for panels

– Dedicated wind controller

– Digital monitoring system

9. Recommendations

- Detailed energy audit

- Consumption optimization

- Strategic positioning of sources

- Possible integration with the grid

8. Conclusions

The implementation of this system is ideal for rural or semi-isolated locations, offering sustainability, independence and reliability.