Components of an Off-Grid Solar System in Ghana
A complete off-grid solar backup system consists of several key components, each with its own cost:
- Solar panels: GHS 800 to GHS 1,500 per panel (400W monocrystalline)
- Battery bank: GHS 3,000 to GHS 8,000 per lithium battery (5kWh)
- Inverter/charger: GHS 4,000 to GHS 12,000 depending on capacity
- Mounting structure: GHS 1,500 to GHS 4,000 for roof or ground mount
- Wiring and protection: GHS 2,000 to GHS 5,000
- Installation labour: GHS 3,000 to GHS 8,000
Total System Costs by Size
For a typical Ghanaian home consuming 15 to 25 kWh per day, a complete off-grid solar system will cost between GHS 45,000 and GHS 120,000 depending on battery capacity and backup duration. A commercial building requiring 50 to 100 kWh per day will need a system costing GHS 200,000 to GHS 500,000.
Designing for Solar from the Start
Buildings designed with solar integration from the outset are significantly cheaper to equip than retrofitted buildings. Architect Afrique designs roof structures with optimal solar orientation, pre-installs conduit for solar cabling, and specifies electrical systems compatible with solar inverters — reducing retrofit costs by 20% to 40%.
