Architect and Builder September/October 2015 | Page 49

Roof areas with xeriscape landscaping provide spaces for respite with expansive views over Sandton to the north and Johannesburg CBD to the south Energy According to the energy performance simulation carried out during the design phase, the expected energy consumption of the building is 806 715 kWh/year. This represents a 34% reduction in energy consumption in comparison to a notional SANS204 compliant building. The following initiatives contribute to the energy efficiency of the building: Illovo Edge • Efficient lighting throughout the interior, basements and the exterior of the building. • Occupancy sensors in all occupied areas • The area-weighted average lighting power density is 1.62W/m² per 100Lux for 99% of the Usable Area. • A heat recovery variable refrigerant flow (VRF) system, most suitable for this size of building and its multitenancies arrangement. 47