GENERAL NEWS
Mashatu Terrace 5-star ‘ As Built ’ rating award
By Kagiso Sebetso
The long awaited 5-star Green Star ‘ As Built ’ rating has finally been awarded to Mashatu Terrace . While Prime Plaza II Motswere building holds the first 5-Star ‘ Design ’ rating in Botswana , Mashatu is the first 5-star ‘ As Built ’ certification in Botswana . This is thanks to the designers , contractors and suppliers who have worked hard to make this 5-star rating a reality .
The team includes the following : Project and development managers : Time Projects Architect :
Paul Munnik Architects Mechanical and electrical engineers : A R Edwards Quantity surveyors :
MLC Cost Consultants
Structural engineers : ADA Consulting Engineers
Sustainable consultants : Solid Green Consulting
Landscaping architects : Loci Environmental
Main contractor : Red East Construction
Mechanical sub-contractor : Climate Control
Electrical sub-contractor : BRES
Fire sub-contractor :
Pipework Services
We also acknowledge the stakeholders occupying the premises for their support and cooperation during the certification journey . These include Bank Gaborone , First Capital Bank , Huawei and Africa Lighthouse Capital .
Mashatu Terrace - First Net Zero rating in Botswana Mashatu Terrace has also achieved Botswana ’ s first Net Zero Carbon ( Modelled ) rating . In pursuit of the goals set out in the Paris Agreement , countries must reduce their greenhouse gas emissions to Net Zero by 2050 .
Energy Sources Mains Electricity 1.2 Diesel 0.267 LPG 0.227 Natural Gas 0.202 Coal 0.354 Biogas 0.025 Town Gas ( coal ) 0.160
Kg CO2 / kWh
Table 1 : CO 2 emission of energy sources – GBCSA Net Zero technical manual V1
For a building ’ s Net Zero efforts to be recognised and awarded a rating by the GBCSA , the building itself is required to be energy efficient . The following are some of the efficiency strategies implemented at Mashatu Terrace :
• Wall and roof insulation greater than the SANS 10400-XA Energy Usage and SANS 204 Energy Efficiency in Buildings
• Efficient glazing
• Shading co-efficiency of 0.3
• LED internal and external lighting
• LED external lighting
• Energy efficient HVAC system
• Lighting controls
• Non-resistive electric water heating for the domestic hot water
• Energy sub-meters
• Smart monitoring and control system for the sub-meters
• Roof with a high solar reflectance index
An effective way of reducing greenhouse gas emissions to Net Zero by 2050 is through using clean energy . If a building ’ s energy demands can be fully met through renewable energy sources , its carbon footprint resulting from energy generated from sources such as coal is reduced to zero .
Lower energy consumption and usage of renewable energy sources lead to reduced greenhouse gas emissions . Below is a table displaying energy usage data that is converted to CO2 emissions .
Once the building passes the efficiency test , the on-site renewable energy source is then recognised for a Net Zero rating . Mashatu has a 248kWp Solar PV installed on the roof of both buildings , which can meet the building ’ s modelled load demand . With a combination of the efficiency strategy and solar PV installation , Mashatu Terrace was able to achieve Net Zero Carbon - Level 1 .
We look forward to pioneering more ‘ green ’ initiatives in Botswana .
ISSUE 51 - SEPTEMBER 2022 7