Residential Solar System Upgrade - PV Expansion + Battery Add-On
(Midrand)
Upgraded an existing residential hybrid system in Midrand by expanding PV capacity, adding battery storage, and recommissioning for longer backup runtime and improved monthly savings.
Building Type
House
Location
Johannesburg
Completion
Operational
Priority Tier
Normal
Technical
Overview
Mission Scope
Upgraded an existing residential hybrid system in Midrand by expanding PV capacity, adding battery storage, and recommissioning for longer backup runtime and improved monthly savings.
Deployment Profile
Client
Homeowner
Confidential
Site Classification
Property: Residential
Building: House
Engagement: Scheduled
Services Mapped
Tags
System Impact
Key Results
- Longer backup runtime with increased battery capacity
- Higher daytime solar coverage after PV expansion
- Improved safety with refreshed isolation, protection, and labelling
Before / After
Before
Backup was limited and the home relied heavily on the grid outside of peak sun hours.
After
Extended essential-load backup during outages and improved daily solar usage, reducing grid dependence.
Outcome Performance
Upgraded the existing residential hybrid system by expanding PV and battery storage, improving protection, and recommissioning the system for longer backup runtime and better monthly savings.
PV Expansion
From ~3.3kWp to ~5.5kWp (array expansion)
Battery Capacity
From 5.12kWh to 10.24kWh (LiFePO4)
Estimated Backup Improvement
Up to ~2× longer essential load runtime (usage dependent)
Client Testimonial
"We needed longer backup and better solar coverage. The upgrade made a noticeable difference, and the team handled everything professionally and neatly."
Execution Chain
Assessment
- On-site assessment
- Load profile analysis
- Roof inspection and shading check
- Existing system review and performance baseline
Execution
- Mounting rails and panel installation for array expansion
- Battery expansion wiring and communication checks
- Protection updates, isolators, and labelling improvements
Verification
- System testing
- PV string checks
- Commissioning checks and parameter tuning
- Monitoring verification
Handover
- Client walkthrough and expectations setting
- System training (backup, charging modes, best practices)
- Documentation handover and updated COC
Protection Standards
Warranty
Labour: 0 months
Materials: 0 months
Hardware & Services
Regulatory Compliance
Requirement Assessment?
Request a technical briefing for similar deployments