Senwes Lighting SystemIn early 2015 Entero Energy was tasked to do a complete lighting analysis, redesign and retrofit of all the indoor lighting at the Senwes Head Office in Klerksdorp. This was done by measuring the current (old) lighting levels along with acquiring the current (old) lighting design drawings. With the baseline established we could start with our 3D simulations. Once the building model was constructed we could start comparing different lighting models to establish which would be the most efficient in terms of capital and operating costs. The decision was made to go for LED luminaires throughout the whole building. With this new lighting design we are removing three old luminaires and replacing them with one new luminaire. In addition it was decided to implement an intelligent lighting control system that employs daylight harvesting, motion sensing and timers to optimise the energy use for each part of the building according to time of day and occupation. In total this project should save up to 150 kW on their total building load.
Senwes PV SystemIn middle 2015 Entero Energy was tasked to do a thorough investigation with regards to the potential for installing solar plants at Senwes Head Office and Senwes silos.
For the Head Office this included analysing their load profile and factoring the impact of the ongoing lighting retrofit project. With this established, the available area for the plant was analysed to confirm that there was enough space to install the system. After this accurate yield forecasts and electrical integration designs were done. With all of the information available a feasibility study was completed and the project got the green light.
We have since done a power quality investigation to establish a baseline for the site prior to the installation of the solar plant. By April 2016 a 714 kWp solar plant will be operational at Senwes Head Office which will save up to 1 300 MWh annually.
On the silos the load profile was acquired and the available areas were assessed for their distance from the point of connection as well as shading. Shade from the silo towers is a very big factor influencing the final position of the plant.
Along with the initial study a power quality investigation was also done to determine a baseline for the site before the installation of the solar plant.
When the feasibility study is approved a 125 kWp solar plant will be installed at the Senwes Hartbeesfontein silo as a pilot project for all the Senwes silos. This 125 kWp solar plant will save up to 230 MWh annually.
In total these projects will save the equivalent of the CO2 emissions of 304 cars each year or the CO2 emissions from producing 116 tons of beef. In addition to the CO2 saving it will also save 541 tons of coal annually.