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.
