Heathway
Shopping Centre
492 kWp rooftop and carport solar installation serving a neighbourhood shopping centre in Blackheath, Johannesburg — reducing operating costs and supporting sustainability for daily retail.
492 kWp
System Size
Rooftop & Carport Grid-Tie
712 MWh
Annual Production
Estimated year 1
641 t/yr
CO₂ Offset
Carbon reduction
Partnership
Financing
Agreement structure
Blackheath,
Johannesburg
Heathway Centre is a well-established neighbourhood shopping centre located on Beyers Naudé Drive in Blackheath, Johannesburg. The centre serves as a convenient retail destination for surrounding residential communities and passing commuter traffic.
The shopping centre is occupied by a mix of convenience retailers, service providers and daily-needs businesses that operate throughout the day. Its location within a densely populated residential catchment supports consistent customer activity and electricity demand.
Rising electricity costs and the centre's significant daytime trading profile created a strong business case for solar energy. The solar PV installation now offsets a substantial portion of the centre's daytime energy consumption while reducing operating expenses and supporting sustainability objectives.
Full Address
Cnr Beyers Naudé and Castlehill Road, Blackheath, Johannesburg, 2195
Sector
Retail — Neighbourhood Shopping Centre
Financial Performance
3 yrs
Payback Period
Simple payback
38%
IRR
Internal rate of return
R1.88
Blended Tariff
Per kWh (MV-TOU)
R1.58M
Est. Annual Savings
Year 1 projection
Monthly Production
kWh generated across rooftop and carport 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
1,426 kWh/kWp
Load Shedding Factor
No load shedding assumed
Full-Scope Solution
Energy Solution
- Grid-tie solar PV
- Rooftop & carport mounted system
- 492 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
Significant reduction in monthly electricity bills, with R1.58M estimated first-year savings improving operating margins.
Grid Independence
Reduced exposure to tariff increases with predictable energy costs and a 3-year payback period.
Carbon Reduction
641 tonnes of CO₂ offset per year supporting ESG reporting and sustainability commitments.
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