Pioneering Integrated Energy and EV Charging System Deploys in West Africa

Bamako, Mali – 15^th Jan, 2025 – A groundbreaking integrated solar, Energy Storage Systems Cabinet (ESS), diesel, and EV charging solution, boasting 1.72 MWh of battery storage for solar, has been successfully deployed in Bamako, West Africa. This advanced system addresses critical energy needs and supports the growing adoption of electric vehicles in the region, showcasing ESS technology and comprehensive energy storage solutions.

The project, West Africa Bamako 1.72MWh Integrated PV/Storage/Diesel/Charging System, designed by Anbosunny, was aimed to provide robust and reliable power for an entire office building. The system ensures seamless on-grid / Off-grid energy storage operation from Monday to Friday, with reduced consumption over weekends to allow the commercial battery storage to fully replenish for the following week.

Overall System Solution Strategy

Energy Storage System Design Based on Load Ratio

Storage capacity of 800kW/1.72MWh was selected to buffer peak demand, support emergency backup, and enable daily cycling of energy.

Multi-Energy Coordination Mechanism

PV provides priority power, with excess stored; the grid supports charging when available, and the diesel generator activates only as a last resort.

Seamless Grid-Tied and Off-Grid Switching Strategy

Automatic grid disconnection and reconnection ensure stable operation even in the face of frequent blackouts.

ESS platform of the project

Subsystem Breakdown

PV System Design

Installed Capacity Planning

PV size is limited by rooftop space, capped below 200kW, and optimized for morning/evening generation periods.

Priority Power Supply Mechanism

“Load first, storage second” strategy ensures priority to building loads and EV chargers.

Energy Storage System Design

Installed Ratio and Capacity Allocation

1.72MWh storage can sustain several hours of full operation during outages, with roles in both daily optimization and emergency supply.

Day-Night Dynamic Charge-Discharge Logic

Charged by PV or grid by day, discharged overnight for lighting and security systems, ensuring round-the-clock reliability.

Diesel Generator Configuration

Backup Timing and Coordination Logic

Activated only when both grid and storage are insufficient, minimizing fuel use while ensuring reliability.

EV Charging Load Management

Coordinated Charging Strategy

EMS system dynamically adjusts charger power output to prevent system overload during peak loads.

Peak Hour Power Allocation

Mix of PV and storage supplies prioritized to chargers, based on battery SOC and power availability.

Smart Energy Dispatch Control Strategy

Priority-Based Load Management

Loads like elevators, HVAC, lighting, and chargers are assigned priority tiers for energy allocation.

Calendar-Based Operational Scheduling

Different schedules for weekdays and weekends allow the system to optimize storage and prepare for weekday demands.

Intelligent Emergency Response Mechanism

Real-time monitoring of power quality, battery status, and grid conditions allows auto-failover and alerts.

Operational Modes: Grid-Tied and Off-Grid Switching

Weekday Operational Mode

PV + Storage + Grid + Diesel operate in tandem; system switches to off-grid seamlessly if the utility fails.

Weekend Storage-First Logic

Low demand allows priority charging of storage, maximizing readiness for Monday peak loads.

Emergency Blackout Response Plan

System instantly switches to off-grid, storage becomes primary supply, diesel is auto-delayed as secondary backup.

System Benefits and Effectiveness

Increased Energy Self-Sufficiency

Greatly reduces dependence on unreliable grid power; self-sufficiency exceeds 80%.

Enhanced EV Charging Assurance

3x 60kW chargers operate reliably, supporting simultaneous fleet charging.

Improved Building Operational Stability

Critical operations continue uninterrupted, enhancing enterprise reliability and reputation.

Reduced Overall Energy Costs

By shifting and balancing load, overall energy expenditures are lowered significantly.

ESS platform of the project

Customer Feedback and Real-World Performance

Customer reports show stable performance and significant improvements over traditional grid-only systems—especially in outage-prone regions.

Replication and Promotion Potential

This solution is highly adaptable and ideal for Africa, the Middle East, and Southeast Asia, where power reliability is a widespread issue.

Conclusion

The Bamako 1.72MWh hybrid PV/storage/diesel/charging system addresses energy shortages, enhances resilience, and reduces operational costs. It stands as a forward-looking, replicable model for sustainable energy in developing regions.