ARRON  SOLAR & ELECTRICAL

QUALITY        AFFORDABILITY         SUSTAINABILITY

SERVICES

The following solar system configurations is available:

 GRID-TIE          OFF-GRID          HYBRID          GRID-ASSIST

GRID-TIE

This system consists of an array of photovoltaic (PV) panels and a Grid-Tie inverter.  The Grid-Tie system provides the primary source of power with the utility grid supplementing any excess in demand during the day. Excess power generated from the PV panels can also be fed back into the grid if permitted by the relevant authorities.

Advantages

  • Relatively low setup cost
  • No batteries needed
  • The most cost effective solar solution
  • Minimal changes to existing circuits needed

Disadvantages

  • Does not supply power when utility grid is off
  • Not suitable for emergency backup

 

OFF-GRID

An ideal solution where no utility is available or if you want to be completely independent of the grid. Power is provided primarily from PV panels and a battery bank, with a backup generator preferable as a secondary power source. A battery inverter and MPPT solar charge controller manages the flow of power between the different sources and the load.  The PV panels will power all loads and charge the batteries when the sun is shining, with the batteries supplying power during the night or on cloudy days.  In the event that the batteries reaches a predetermined depth of discharge the generator will supply power to the loads and charge the batteries. 

Advantages

  • Completely independent of grid
  • No power outages
  • Convenience

Disadvantages

  • Relatively higher setup cost
  • Batteries needed
  • Generator needed


HYBRID

This system is essentially a combination of a Grid-Tied and Off-Grid system. A hybrid inverter or a combination of a Grid-Tie and an Off-Grid inverter can be used. If a hybrid inverter is used, the size of the installation is limited. A Grid-Tie combination can be scaled to very large installations. If permitted by relevant authorities both configurations can feed back into the grid whilst providing the convenience of backup if the grid is off.

Advantages

  • No power outages
  • Convenience
  • No generator needed
  • Minimal changes to existing circuits

Disadvantages

  • Batteries needed
  • Relatively higher setup cost (Grid-Tie combination)
  • Limited in terms of installation size (Hybrid)

  

GRID-ASSIST

If your budget or needs is not met by any of the above systems, the Grid-Assist system will be the perfect solution.  By scaling the installation to the exact customer requirements, the PV installation, battery bank and inverter can be sized to provide power to dedicated circuits.  This enables the customer to have all the sensitive and essential items on solar power to provide convenience as well as protection against outages and surges on the utility grid.

Advantages

  • No power outages
  • Convenience
  • No generator needed
  • Very versatile in terms of cost and application

Disadvantages

  • Batteries needed
  • Extensive changes to existing circuitry may be necessary