Kya Rock
Commercial
102 kWp rooftop grid-tie solar installation at a commercial property in Johannesburg — generating 163 MWh annually and delivering R359k in first-year electricity cost savings.
102 kWp
System Size
Rooftop Grid-Tie
163 MWh
Annual Production
Estimated year 1
147 t/yr
CO₂ Offset
Carbon reduction
Partnership
Financing
Agreement structure
Johannesburg,
Gauteng
Located in the Kya Sands commercial precinct of Johannesburg, this commercial property operates standard business hours, generating a strong correlation between solar production and building electricity demand. The site's roof structure and orientation are well-suited for a rooftop solar installation.
On an LV-TOU tariff, the property's electricity costs are highest during morning and afternoon peak periods — precisely when the solar system is generating power. This alignment between generation and consumption maximises the financial value of every kilowatt-hour produced.
The 102 kWp system was engineered to maximise roof utilisation while maintaining safe structural loads and full compliance with local electrical regulations, delivering a turnkey solution with immediate cost benefits.
Location
Kya Sands, Johannesburg, Gauteng, South Africa
Sector
Commercial — Business Property
Financial Performance
5 yrs
Payback Period
Simple payback
20%
IRR
Internal rate of return
R2.20
Blended Tariff
Per kWh (LV-TOU)
R359k
Est. Annual Savings
Year 1 projection
Monthly Production
kWh generated across rooftop installation
Monthly Cost Savings
Estimated Rand savings at R2.20/kWh blended tariff
Tariff Structure
LV-TOU (Low Voltage Time-of-Use)
Tariff Year
2023/24
Specific Yield
1,598 kWh/kWp
Load Shedding Factor
No load shedding assumed
Full-Scope Solution
Energy Solution
- Grid-tie solar PV
- Rooftop mounted system
- 102 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
- LR5-66HPH-500M
- Panel Capacity
- 500 W
- Cell Technology
- N-Type Mono PERC
- Supplier
- Magneto
Inverters
- Manufacturer
- Sungrow
- Model
- SG60CX-P2
- Type
- String Inverter
- Rated Power
- 60 kW
- Monitoring
- iSolarCloud Platform
Client Benefits
Energy Cost Savings
R359k in estimated first-year savings by displacing LV-TOU grid electricity with clean solar generation during peak business hours.
Grid Independence
Reduced exposure to Eskom tariff increases with predictable solar energy costs and a 5-year simple payback period.
Carbon Reduction
147 tonnes of CO₂ offset per year supporting ESG reporting and environmental sustainability commitments.
Ready for a similar solution?
Let's design a commercial solar solution tailored to your facility's energy profile.