Hermanstad
Industrial
778 kWp rooftop grid-tie solar installation at a major industrial facility in Hermanstad, Pretoria — delivering 1,245 MWh annually and R2.34M in first-year electricity cost savings.
778 kWp
System Size
Rooftop Grid-Tie
1,245 MWh
Annual Production
Estimated year 1
1,121 t/yr
CO₂ Offset
Carbon reduction
Partnership
Financing
Agreement structure
Hermanstad,
Pretoria
Located in the Hermanstad industrial precinct of Pretoria, this facility operates continuous production schedules with high and consistent electricity consumption. The expansive roof area across multiple warehouse structures provided an ideal platform for the 778 kWp installation.
As a MV-TOU tariff customer, the facility incurs premium electricity charges during peak demand periods. The solar system is strategically sized to maximise displacement of consumption during these high-cost windows, significantly improving the project's financial metrics.
At 1,245 MWh per year, this installation ranks among the largest in Focal Energy's portfolio, demonstrating the company's capability to deliver, commission and manage large-scale industrial solar projects with full EPC and ongoing O&M services.
Location
Hermanstad, Pretoria, Gauteng, South Africa
Sector
Industrial — Manufacturing Facility
Financial Performance
4 yrs
Payback Period
Simple payback
28%
IRR
Internal rate of return
R1.88
Blended Tariff
Per kWh (MV-TOU)
R2.34M
Est. Annual Savings
Year 1 projection
Monthly Production
kWh generated across rooftop installation
Monthly Cost Savings
Estimated Rand savings at R1.88/kWh blended tariff
Tariff Structure
MV-TOU (Medium Voltage Time-of-Use)
Tariff Year
2023/24
Specific Yield
1,600 kWh/kWp
Load Shedding Factor
No load shedding assumed
Full-Scope Solution
Energy Solution
- Grid-tie solar PV
- Rooftop mounted system
- 778 kWp total installed capacity
- Generator integration included
- No battery storage required
EPC & Compliance
- Structural sign-off
- Electrical Pr. Eng sign-off
- Electrical COC
- Lightning risk assessment
Ongoing Services
- Full O&M Contract
- Asset Management Reporting
- Independent Check Metering
- Carbon Credits
- Insurance
Technical Specifications
Solar Panels
- Manufacturer
- Longi Solar
- Model
- LR5-72HPH-555M
- Panel Capacity
- 555 W
- Cell Technology
- N-Type Mono PERC
- Supplier
- Magneto
Inverters
- Manufacturer
- Sungrow
- Model
- SG125CX-P2
- Type
- String Inverter
- Rated Power
- 125 kW
- Monitoring
- iSolarCloud Platform
Client Benefits
Energy Cost Savings
R2.34M in estimated first-year savings by displacing expensive MV-TOU peak-rate electricity with clean solar generation.
Grid Independence
Reduced exposure to Eskom tariff increases with predictable solar energy costs and a 4-year simple payback period.
Carbon Reduction
1,121 tonnes of CO₂ offset per year — one of the highest carbon reduction figures in Focal Energy's portfolio.
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