GES Solar Power Systems – Grid Tied

Reduce your electricity bill, with free electricity from the sun

Why Solar Power?

Electricity costs are rising.
Solar energy is clean.
Solar energy makes financial sense, great ROI!
To be more energy independent.


Solar power is free, clean energy from the sun. The perfect power solution for your home, home office or small business…

Gridtied Solar System Diagram


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.

Grid power compared to Solar Power



  • Biggest cause of air pollution.
  • Power shortages
  • Expensive – High monthly electricity bills
  • Rising cost – large percentage increase in prices yearly



  • Pollution free
  • Abundance of Solar energy in South Africa
  • No cost to the energy produces
  • Initial investment pays for itself within a few years

How do I determine what is the right size solar system for me?

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.

  1. What roof space do you have available?

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.

  1. What is your yearly energy usage, or your monthly average usage?

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 50% of your total energy consumption.

  1. How much do you want to invest in a solar system?

You can start with a small investment in a 1 kilo Watt peak solar system, adding more later on. Solar systems are very easy to expand to larger systems.

How quickly will my system pay for itself?

One of our experienced solar consultants will be happy to calculate your system payback for you.

But, for illustrative purposes use the following example, to illustrate what is the typical payback of a solar system.

This is based one of our actual installations

  • Current electricity cost: from June 2015: R 1.44 per kWh
  • Expected increase for the next 5 years: 9%
  • Monthly average energy usage: 800 kWh
  • Location: Johannesburg
  • Size of solar PV System: 00 kWp
  • Estimated annual yield from PV Plant: 6 300 kWh
  • Cost of solar system: R 86 623.00

GES Standard Solar Systems – Grid Tied

– Single Phase – Solar Edge

Note: All systems calculated with the following variables:
Location: Johannesburg

Tilt: 22 degrees

Azimuth: zero degrees (North)

Modules: Polycrystalline

GES Standard Solar Systems – Grid Tied

– Three Phase – Solar Edge

Please Note:

  • The Solar panels come with 25 year linear warranty on 80% of the power.
  • All systems are scalable, so you can start small and add on later.
  • Prices include all the mounting structures, cable, connectors, AC electric boards and Installation. The only extra cost is transportation cost outside of Johannesburg.

Components of the Photovoltaic system

Solar Generator


ad-187x300ae-300x253 IBC Solar Module

  • Model name: IBC PolySol 240 CS
  • Nominal Power (STC): 250 Wp
  • Module Efficiency: 1 %
  • Cell type: polycrystalline
  • Size: 1650 x 990 x 40 mm
  • Weight: 1 kg
  • Certificate: IEC 61215, SKL II, CE Sign
  • 10 years limited product warranty of manufacture

Power warranty of manufacture:

  • 90% for 10 years
  • ‐ 80% for 25 years




af-300x262ag SolarEdge Power Optimizers

  • PV power optimization at the module-level
  • Up to 25% more energy
  • Superior efficiency (99.5%)
  • Mitigates all types of modules mismatch-loss, from manufacturing tolerance to partial shading
  • Flexible system design for maximum space utilization
  • Fast installation with a single bolt
  • Next generation maintenance with module level monitoring
  • Module-level voltage shutdown for installer and firefighter safety



ah-233x300ag SolarEdge, three phase inverter

  • Superior efficiency (98%)
  • Small, lightest in its class, and easy to install
  • Built-in module-level monitoring
  • Internet connection through Ethernet or Wireless
  • IP65 – Outdoor and indoor installation
  • Fixed voltage inverter, DC/AC conversion only
  • European weighted efficiency: 98 %
  • 12 years standard product warranty – Inverter

Mounting System


aJae-300x253 IBC Mounting System

  • System Name: TopFix 200
  • Use of surface-mounted EPDM material ensures that the roof remains watertight – IBR type Mounting system
  • Material: Aluminium
  • Manufacture Warranty: 10 years product warranty


Inverter plugs directly into the internet.

All data is saved to an online server and is accessible through the internet.

Free online access to monitoring portal

Example demo site can be viewed here:

  • Module level Monitoring
  • Website Online and Mobile applications
  • Included free of charge for the lifetime of the system

Call us: 011 768 3415 or Email:

Contact us today, and be part of the solution.