M Solar Power is proud to have completed a 120 kW Commercial Bifacial Solar Power installation at Stellenpak outside Cape Town. The system is designed to meet 85% of the building’s daytime energy needs and will be cost neutral in less than three years.
The system will produce an average of 210,000 kW hours per year, reducing the client’s annual carbon emissions by a staggering 252 tons. Great to see another client being empowered by the sun!
Solar Power Systems Components
- 455W JA Solar PERC Mono Split Cell Bifacial Panels
- Sungrow 110kW Inverter
- Wattmon Generator Control
- Integrated remote web monitoring and smartphone app
Traditional solar panels consist of glass on the front side with a plastic sheet or film on the backside. Building solar panels this way leaves building owners exported to the vulnerability of plastic when exposed to direct sunlight over long periods.
Solar panel output declines each year due to this and plastic back sheet failure or solar panel delamination is a common occurrence due to this weakness.
Glass-glass or glass on glass solar panels are constructed differently with a layer of glass on the rear eliminating this weakness. This combined with newer more efficient PERC solar cell technology means that few solar panels are needed, that produce more power per square meter that last much longer than traditional laminated or plastic back sheet solar panels.
PERC cells were particularly beneficial at this installation due to the limited amount of roof space available.
PERC Solar Panels or solar panels with “Passivated Emitter and Rear Contact” solar cells, are different than conventional solar cells that have an extra layer within the rear side of the cell which allows high-frequency light rays to reflect back into the solar which enables the solar cells to produce 6 to 12 percent more energy than conventional solar panels.
By installing higher efficient PERC cells we needed to install fewer panels to the same amount of electricity when compared to conventional poly or monocrystalline solar panels.