We realise that every household is unique and strive to meet your specific expectations, be it independence from the grid, a reduction in electrical cost or a green residence. A solar power system is customized for your home, so pricing and savings vary based on physical location, environmental factors, system size and local utility rates – there are no standard systems or ‘kits’ and a lot of complex calculations are involved. There are a lot of solar companies out there so keep these factors in mind (as well as the quality and efficiency of the solar equipment offered) when asking for a quotation. GBES (GreenBuilt Energy Solutions) is an established solar company with a good reputation and service backup.
Four different options are available to home owners, depending on your specific needs:
01. Grid-tied system
This system has direct grid feed with no battery storage. It feeds all electric power generated by the solar panels through a mains synchronized high quality inverter and offsets the power you would normally consume from the electricity company through slowing, stopping or reversing your electricity meter. The result being a great reduction in or even zero electricity bills – depending on the loads present and the size of the solar system installed. This is an extremely popular system because there is virtually no maintenance and the system costs less than its ‘off-grid’ counterpart. Please note however that this system does not include batteries and does not offer any protection against power failures. On average this system pays off in about 4.5 – 5.5 years, leaving our clients with 20 years worth of free electricity. This is the most popular system in Europe and has recently been legalised in South Africa. Our grid-tied systems comply with all local regulations.
This system includes: PV modules, inverter, cable, roof mounts and connectors.
02. Off-grid system
This is a completely stand-alone battery system with no connection to the grid. This system provides all the electricity requirements of the user without any input from any other source. It is also ideal for remote areas where connection to a public grid is either not possible or very expensive. The system size – amount of PV modules, other system components and the battery reserve capacity is dictated by the electrical usage, the amount of reserve for periods of little or no sun and the climatology of the area. Due to battery costs, this is the most expensive option. Despite an initial higher investment, this system becomes more economical in the long run with the added bonus of convenience – load shedding? What load shedding?
This system includes: PV modules, bi-directional inverter, regulator, batteries, combiners/fusing/isolator, cable, roof mounts and connections.
03. Combination system
LOWER BILLS. LESS LOAD SHEDDING.
This system is a combination of the above two systems. This system still has direct grid feed but also includes batteries. Depending on the amount of batteries included, this system not only allows the client an immediate reduction in utility bills, but also powers selected items during periods of power failure – e.g. a few lights, television, fridge and computer (depending on personal preference). Please keep in mind that connection to a public grid is still needed for this system. This is currently the most popular option in South Africa because it offers needed electricity during blackouts without the cost of a complete off-grid system. This system is also easily added on to if you wish to upgrade to an off-grid system at a later stage.
This system includes: PV modules, inverter (both bi-directional and grid-tied), regulator, batteries, combiners/fusing/isolator, cable, roof mounts and connectors.
04. Load shedding buster
NO MORE LOAD SHEDDING.
To get an idea of costs you first need to establish your power consumption. For this you will need your electricity bills over the last twelve months, This will give you an average figure over the last 12 months and incorporates the difference between winter and summer. Click on our TOOLS button on our homepage to help you with your calculations. Remember the more accurate the information you supply, the more accurate we can design your system and save you costs, so take a little time on this.
Also try and implement the following guidelines to make your solar system more viable: cooking with gas, try to install a solar geyser, try to install power saver lights,or even better, LED lights.