Locations with no or difficult access to grid
Energy self-sufficiency
Energy Security

An off-grid solar system is basically the same as a hybrid system except it is not connected to the grid Utility Provider (Eskom). For users that have access to the grid, off-grid solar systems are usually not viable. An off-grid solar system requires battery storage and in most cases a backup generator. Over and above this, everything typically needs to be larger. Not being able to compliment your solar energy with grid energy means that you need a system that can cater for your entire energy requirements, including charging your batteries. The battery bank typically needs to be significantly larger than a hybrid system and replaced more regularly due to the extensive usage. This makes it far more complicated, expensive and decreases the overall system efficiency.

In locations that have no access to the grid (Eskom), off-grid systems are your only option or in certain remote locations, off-grid solar systems can be cheaper than extending power lines to connect to the grid.

Living off the grid and being self-sufficient feels good. For some people, this feeling is more important than the cost of the off grid system. Energy self-sufficiency is also a form of security. Power failures on the utility grid do not affect off-grid solar systems.

Go for Off-grid:
  • Locations with no access to grid
  • Energy self-sufficiency
  • Security

It takes a substantial amount of money and big batteries to cater for your entire energy requirements and prepare for several consecutive days without any sunshine. This is where backup generators come in. In most cases, installing a backup generator that runs on diesel is a better choice than investing in an oversized battery bank that seldom gets to operate at it’s full potential. Backup generators typically output AC, which can be sent through the inverter for direct use and it can be converted into DC for battery storage.

Utilizing a backup generator in conjunction with your batteries is far more efficient that relying solely on a generator. The generator can be used to top up the batteries when there has not been enough sunshine or when the consumption has exceeded the solar output. In both cases the generator only needs to run for a relatively short period of time, thus reducing the running costs.