12kW / 13.32kWp Solar Installation – Ajah, Lagos State (December 2024)
Bravestone Energy Solutions delivered a 12kW / 13.32kWp solar power system for a 5-bedroom duplex in Ajah, Lagos State. The installation powers all lighting points, two air conditioners, freezers, and other essential appliances, providing a reliable and sustainable energy source.
Client:
Location: Lekki Lagos
Services Industrial Survey, System Design, PV & Battery Install, Protection & Controls, Commissioning, O&M
System Specifications
- 12kW SRNE three-phase hybrid inverter
- 12 × 12V 220Ah tubular batteries
- 24 × 555W Jinko solar panels
Installation Process
- Solar panels mounted to maximize sunlight exposure
- Inverter integrated into the home’s three-phase electrical system
Tubular battery bank installed to ensure extended backup power during outages
On the roof, we built robust sub-arrays with correct spacing for heat dissipation and access. DC cabling was run in UV-stable trunking with safe drip loops, and all junctions were labelled. Inside, we installed the inverter, battery stacks, protection panels, and a dedicated maintenance clearance zone. We reworked earthing to reduce impedance and implemented surge protection at strategic points in the system.
Commissioning involved line-by-line checks: DC strings, AC boards, breaker discrimination, and staged load tests. We also programmed delayed starts for the biggest machines so the system could ramp without stress. Supervisors received training on the monitoring dashboard and a simple “what-to-do” guide for shift leads.
Results were immediate: fewer brownouts, smoother machine starts, and a noticeable reduction in fuel runs. The client enrolled in quarterly preventive maintenance—thermal scans on boards, torque checks on terminals, firmware updates, and dust management for panels and power rooms—protecting output over the long term.
Our Approach
- Survey
- Load Modeling
- Design
- HSE & Procurement
- Clean Install
- Commissioning
- Monitoring
System Size
12kW / ~13.3kWp
Storage
28.8kWh battery
Outage Coverage
18 hours
Diesel Reduction
≈50–65%
Install Timeline
3 days
Results & Impact
Production stability: Sequenced starts and voltage regulation reduce brownouts and stoppages.
Fuel/OPEX drop: ~50–65% reduction in generator runtime and associated costs.
Equipment protection: AVR layer and surge protection safeguard control electronics.
Workplace efficiency: Smoother restarts after grid events; better shift transitions.
Estimated solar yield: ~144–180 kWh/day (seasonal).
CO₂ avoided: ~12 t/year (indicative).
Operator empowerment: Supervisors trained on dashboards and simple response playbooks.
Service plan: Quarterly PM (thermal scans, torque checks, cleaning, firmware updates).
- Business Continuity – Reliable off-grid power eliminates downtime from grid interruptions
- Energy Efficiency – Optimized solar generation reduces long-term operating costs
- Sustainable Operations – Cuts carbon footprint while meeting demanding commercial energy needs
In Last 5 Years
& Workers With Us
Years Of Experience In
The Solar Industry
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