Remote Island Off-grid Solar Carport EV Charging System
Projects & Applications 2026-07-28
Project Overview
Located on a remote island without access to a stable utility grid, this project provides a fully independent renewable energy solution integrating solar power generation, battery energy storage, and EV charging infrastructure.
The system combines a photovoltaic carport structure with an off-grid solar energy storage system and DC/AC charging stations, creating a self-sufficient clean energy microgrid for island transportation.
By utilizing solar energy collected from the carport roof, the system supplies continuous power for government vehicles, electric sightseeing vehicles, and residents’ electric vehicles without relying on mainland grid connection or diesel generators.
This type of integrated solution is ideal for:
- Remote islands
- Offshore camps
- Eco-tourism resorts
- Coastal communities
- Remote areas without reliable electricity supply
Project Challenges
Power Supply Challenges in Remote Island Areas
Remote islands often face several energy challenges:
No Reliable Grid Connection
Installing submarine power cables to isolated islands requires significant infrastructure investment and long construction periods.
For many small islands and offshore facilities, connecting to the public grid is economically impractical.
High Cost of Diesel Power Generation
Traditional diesel generators require continuous fuel transportation, resulting in:
- High operating costs
- Noise pollution
- Carbon emissions
- Complex maintenance requirements
Growing EV Charging Demand
With the increasing adoption of electric vehicles in tourism areas and island communities, reliable charging infrastructure has become essential.
However, unstable electricity supply limits the deployment of EV charging stations.
Solution: Off-grid Solar + Battery Storage + EV Charging System
To overcome these challenges, Zelinco Energy provided a customized off-grid solar carport charging solution integrating renewable energy generation, energy storage, and intelligent power management.
The system consists of:
- Solar photovoltaic carport structure
- Off-grid solar inverter system
- Lithium battery energy storage system
- DC fast charging stations
- AC charging stations
- EMS energy management platform
The photovoltaic carport not only generates clean electricity but also provides vehicle protection from intense sunlight, rain, and coastal salt spray.
Related products:
→ [Off-grid Solar Energy Solutions]
→ [Residential & Commercial Energy Storage Systems]
→ [Battery Energy Storage System (BESS)]
→ [Solar EV Charging Solution]
System Configuration
1. Solar PV Carport System
The project adopts a large-scale photovoltaic parking canopy design.
PV System Specifications
| Item | Specification |
|---|---|
| Carport Length | Approx. 72 meters |
| Parking Capacity | 24 vehicles |
| PV Module Type | 580W Monocrystalline Solar Panels |
| Number of Modules | 144 units |
| Total PV Capacity | 83.52kWp |
| Average Daily Solar Production | Approx. 317kWh/day |
The entire carport roof is covered with solar modules to maximize renewable energy generation.
The system is equipped with:
- Off-grid solar inverter
- DC combiner box
- Lightning protection system
- Solar monitoring equipment
Related product:
→ [Solar Panel Solutions]
2. Battery Energy Storage System
Because island environments usually experience variable weather conditions, battery storage is essential for maintaining stable electricity supply.
The project uses a lithium iron phosphate (LiFePO₄) battery storage system.
Energy Storage Specifications
| Item | Specification |
|---|---|
| Battery Type | Lithium Iron Phosphate Battery |
| Storage Capacity | 250kWh |
| System Type | Off-grid Battery Energy Storage System |
| Battery Management | Intelligent BMS |
| Monitoring | Remote EMS Monitoring |
During daytime operation:
- Solar energy directly powers EV charging loads.
- Excess electricity is stored in the battery system.
During nighttime or cloudy weather:
- The battery automatically supplies stored energy.
- Charging stations continue operating without interruption.
Related product:
→ [Commercial Energy Storage System]
→ [Lithium Battery Energy Storage System]
3. EV Charging Infrastructure
The charging system supports multiple types of electric vehicles, including:
- Government vehicles
- Electric sightseeing vehicles
- Passenger EVs
- Small electric engineering vehicles
Charging Equipment Configuration
| Equipment | Quantity |
|---|---|
| 60kW DC Fast Charger | 4 Units |
| 7kW AC Charger | 8 Units |
| Total Parking Spaces | 24 Spaces |
The integrated EMS platform automatically manages:
- Solar power generation
- Battery SOC status
- Charging load
- System protection
This ensures efficient energy utilization and prevents system overload.
Related product:
→ [Solar EV Charging Station Solution]
System Operation Principle
Fully Off-grid Energy Management Mode
Unlike conventional grid-connected charging stations, this project operates completely independently without external electricity supply.
Daytime Operation
Solar panels generate electricity.
Priority power supply:
- EV charging loads
- Battery charging
- Other auxiliary loads
Cloudy or Low Solar Conditions
When solar generation decreases:
The battery storage system automatically compensates for insufficient power output.
Night Operation
During nighttime:
The stored electricity from the battery system supplies charging demand.
The system continues providing reliable power without diesel generators or grid connection.
Project Advantages
1. Completely Independent Off-grid Operation
The system eliminates the need for expensive submarine cable infrastructure.
By generating and storing solar electricity locally, the island achieves long-term energy independence.
2. Solar Carport Integration
The photovoltaic structure provides dual benefits:
- Renewable energy generation
- Vehicle protection
The carport protects vehicles from:
- Strong sunlight
- Heavy rain
- Coastal salt spray
while improving land utilization efficiency.
3. Stable Power Supply with Energy Storage
Island environments often experience:
- Cloudy weather
- Sudden rainfall
- Solar fluctuations
The battery storage system balances renewable energy output and ensures continuous EV charging availability.
4. Designed for Coastal and Marine Environments
The system adopts corrosion-resistant protection measures:
- Hot-dip galvanized steel structure
- Anti-corrosion coating
- Salt spray protection for electrical equipment
Suitable for coastal areas with high humidity and salt exposure.
5. Zero Fuel Consumption
Compared with diesel generators, the solar storage charging system provides:
- Zero fuel transportation
- Lower operating cost
- Reduced carbon emissions
- Silent operation
Ideal for eco-tourism islands and environmental protection areas.
6. Intelligent Remote Monitoring
The EMS platform enables remote monitoring of:
- Solar generation
- Battery SOC
- Charging status
- System performance
Reducing the need for permanent technical staff on remote islands.
Project Results
After deployment, the system achieved:
✓ 24-hour renewable energy charging capability
✓ Reduced dependence on diesel generators
✓ Approximately 317kWh daily clean electricity generation
✓ Reliable charging support for island vehicles
✓ Improved vehicle protection through solar carport design
✓ Lower long-term operation and maintenance costs
The project demonstrates how solar + battery storage + EV charging technology can provide a practical energy solution for remote areas without reliable grid access.
Application Scenarios
This solution can be widely applied in:
Remote Islands & Coastal Communities
Providing independent renewable electricity and EV charging infrastructure.
Eco-tourism Resorts
Supporting green transportation while reducing environmental impact.
Offshore Camps & Industrial Bases
Providing reliable clean power where grid connection is unavailable.
Emergency Energy Facilities
Supporting backup electricity and transportation electrification.
Related Solutions
Explore more renewable energy solutions:
→ Off-grid Energy Solutions
→ Commercial Energy Storage Solutions
→ Backup Power Solutions
