Solar power is free, clean energy from the sun. The perfect power solution for your factory, office or small business…
During the day the array of photo-voltaic modules generates direct current (DC). The DC electricity is transmitted to the Grid Tied inverters to convert into usable alternative current (AC) electricity for the building’s needs.
The Grid Tied inverters will synchronize with AC power from the supply grid. In the event when the building uses more electricity than the PV array can generate, the supply grid will be a secondary source of supply. Alternatively, excess electricity generated by the PV array will be channeled to the supply grid, subject to municipal approval. During the night the Grid Tied inverters will stop operation and the building will obtain electricity from the supply grid.
During power failures: As a safety feature, the grid inverters will cease to operate.
This is to prevent islanding and provide protection to the electrical network. It is possible to design the system that it will still operate during a power failure. This will be an extra cost to the project and will require a site inspection with electrical engineers to establish current electrical reticulation and actual loads.
The best way is to arrange a site visit with one of our solar consultants. But for interest sake, your system size will be determined by the following three factors
North facing roofs are preferably, as a North facing solar array will produce more energy, than other orientations. East and West facing roofs can also work, but will produce about 20% less power than a North facing roof.
Your daily energy consumption will determine the amount of energy to be produced by your solar system. Daytime energy consumption will determine the solar system size and is typically 30% of your total energy consumption.
Solar systems are very modular. You can start with a small investment in a 1
This is dependent on various factors such as your electricity tariff, roof orientation and location in South Africa. But, for illustrative purposes use the following example, to illustrate what is the typical payback of a solar system
Note: All systems calculated with the following variables:
|Solar array size||Yearly energy production|
|2.0 kW||3.40 MWh|
|3.0 kW||5.10 MWh|
|4.0 kW||6.80 MWh|
|5.0 kW||8.50 MWh|
|6.0 kW||10.20 MWh|
|7.0 kW||11.90 MWh|
|8.0 kW||13.60 MWh|
|9.0 kW||15.30 MWh|
|10.0 kW||17.00 MWh|
|11.0 kW||18.70 MWh|
|12.0 kW||20.40 MWh|
|13.0 kW||22.10 MWh|
|14.0 kW||23.80 MWh|
|15.0 kW||25.50 MWh|
|16.0 kW||27.20 MWh|
|17.0 kW||28.90 MWh|
|18.0 kW||30.60 MWh|
|19.0 kW||32.30 MWh|
|20.0 kW||34.00 MWh|
To calculate your potential solar system size an return on investment we need to know what rate you are paying per unit of electricity, how much electricity you are using each month and what size system can fit on your roof.
One of our experienced solar consultants will be happy to calculate your system payback for you. We take all factors into consideration when calculating system return on investments.[/vc_column_text][/vc_column]