Cornerstone Building: | PV Solar - 81kWp
Project: 81kWp (DC)
127 Cecil Str | Salt River | Cape Town:
Coordinates: 33° 56' 2.88" S, 18° 27' 38.12" E
Installed power: 81kWp
Type of modules : 300W crystalline silicon (c-si)
Number of modules : 270
Azimuth/inclination: 29°(northeast) / 20°
Annual global in-plane irradiation 2017 kWh/m
Annual air temperature at 2m: 17.1°C
PV System Electricity Generation
Cornerstone Student College commissioned 24 June 2014.
The PV system generates 75% of the buildings energy requirements during day time usage.
Additional electricity (25%) is drawn from the GRID.
On Sundays the PV system reverse feeds into the GRID with a pay back agreement (SSEG) in place with the City of Cape Town.
Reverse feed rate: R0.61c/kWh ex VAT
Electrical Energy Savings
Cornerstone Building, an office block located on 127 Cecil Rd, Salt River (pictured above). Its 81kWp system was installed in June 2014 and consists of 270 solar panels and five inverters. “These components [of both systems] operate optimally in spite of the heavy winds and storms that Cape Town experiences,” says Emvelo Renewable Solutions Director Ray Snyders.
The system provides for 70% of the building’s electricity needs, and has resulted in savings of R180 000 per year.