Client: Private Residential
Project Type: Full off grid system for main house and three surrounding cottages
Location: Atlantis Farms, Western Cape
Date Completed: January 2024
PROJECT OBJECTIVES
The client’s requirement was to go fully off-grid from Eskom. They were paying R6000 per month just for access to electricity, and this excludes the monthly electricity usage costs. Client needed the main house and the three surrounding cottages to be fully independent of Eskom. They required a system that would provide enough electricity during the day, as well as having enough battery power when the sun goes down.
SITE ANALYSIS
After doing the site visit, we determined that the east facing panels were to be mounted higher to avoid shading from trees and the west panels mounted lower to avoid the shade from the chimney.
The solution was to have 9 solar panels facing east and 9 solar panels facing west, mounted on a corrugated roof with hanger bolts fastened into the wooden substructure.
SYSTEM DESIGN
- Photovoltaic system – JA Solar
- 12kW three-phase Sunsynk Hybrid Inverter
- 15kWh Hubble AM5 Lithium battery bank
- 18x 550W JA Solar panels
- Roughly 31.6kWh daily production
- Rooftop installation on IBR roof
- Components and equipment specifications
TIMELINE AND MILESTONES
- Client first made contact end of 2023
- Two site visits undertaken
- Quote submitted and then awaited approval of solar financing
- Installation undertaken the week after payment made
- Job completed in two days
CONCLUSION
- 12kWh Inverter with 3 batteries and 18 panels installed for an off grid system to run the household and adjacent cottages on the property. The project was completed within two days.
- Total cost including CoC – R290 000.00 (SSEG was not required as the client has terminated their Eskom contract.)
This system will help our clients go off grid and save R6000+ on monthly Eskom/utility expenses. The panels will produce enough electricity to supply the household during the day, as well as charging the battery bank, which has a large enough capacity to power the house during times when the sun is not out. For cloudy days, New Tech Power installed the system so that a generator can be connected if there be more than 3 days of no PV production to charge the batteries.