System Types

Grid Tie Systems

Grid-tie systems are designed to save you money.  It combines the solar output power with Eskom input power to reduce the usage from Eskom. Grid Tie Systems do not offer any backup power in case of load shedding.   Eskom off = Solar system off

Systems such as these are ideal for offices, shops, malls or large complexes, mines, hospitals, butcheries or wherever occupancy mostly occurs during the day.  Homes with a pool and large daily consumption can also benefit from these systems.

These systems are the most cost-effective to install and your return on investment could be 2-4 years depending on what you currently pay per kwh (unit) on your electricity bill.

 

These systems can export to the grid if it’s allowed by your local authority.     If it is not allowed to feed power back to the grid then a solar block can be installed to prevent export. Scalable systems, 1.2kwp up to 100,000kwp…. You don’t have to install a large system, start small and expand the system over time.

CONTACT US  today to for more information on this…

How Can Businesses Benefit from Solar ?

We as professional & certified solar installers have installed many solar systems, grid-tie, off-grid and complexed… small and large… residential & commercial.

Solar Edge Residential solution video:     https://www.youtube.com/watch?v=-Bsq7umcffg&t=6s

Solar Edge Commercial solution video:   https://www.youtube.com/watch?v=-oe-Ma6bk-o&t=3s

 

CONTACT US  today for more info on Solar Edge and other Grid-Tie Solutions…

Hybrid systems (Off-grid with grid/generator backup )

Hybrid systems are designed for applications where there is grid power available for backup.    These can be used with a generator or wind turbine as an extra 2nd  backup to support the battery bank if load shedding or if an unstable grid is a big problem.

  • These systems can not export (feedback) to the grid.
  • Some systems has two load outputs, one for essential loads and other for non-essential loads. When it is load-shedding the non-essential loads will disconnect and inverter will supply only essential loads.

These systems work with specially designed lead acid 2v deep cycle batteries for long-term cycling or can work with GEL or AGM 12v batteries that have a shorter lifespan.   Lead acid 2v cells last 10-15 years depending on D.O.D and GEL 12v cells last 4-7 years depending on D.O.D.    If you are in it for the long term then GEL or AMG is not recommended.

These systems are mostly designed on the kwh usage of the load requirements.    When you are over the kwh limit that the system was designed for then the system will automatically switch back to grid mode for the grid to supply the load or if it is set up it will charge batteries from the grid.

Certain grid hybrid Inverters can supply load from the grid and Pv at the same time.

Return on investment would be +-8-10 years.
Scaling these systems is not a problem, smallest 1kwh up to 1000kwh….

CONTACT US  today for more information on this…

Victron Off-Grid, Grid Active & Backup systems

Victron Energy has possibly the widest variety of solar products of any manufacturer with everything from tiny solar controllers up to rather impressive 15kVA grid-interactive inverter/chargers, not to mention a seemingly unlimited combination of add-ons and accessories to create everything from simple battery monitors to remote AC or DC-coupled off-grid power systems. Single or 3 phase configuration.

Victron Multiplus or Quattro units are available in 5kVa, 8kVa, 10kVa, 15kVa

Victron Marketing video;      https://www.youtube.com/watch?v=OJ6JkSW5cfY

CONTACT US  today for more information on this…

Off-Grid systems

Off-Grid systems are designed for remote applications where no grid power is available.

These are mostly used with a generator or a wind turbine as a backup to support the battery bank if the weather is bad.

These systems work with specially designed lead acid 2v deep cycle batteries for long-term cycling.  AMG & GEL batteries are not recommended.

These batteries last normally 10-15 years depending on depth of discharge (D.O.D).

These systems are mostly over-designed for longer backup that makes it more expensive.   Return on investment could be +-8-10 years.

Scaling these systems is not a problem, smallest 1kwh up to 1000kwh….

 

CONTACT US  today for more information on this…

Hybrid systems (Off-grid with grid/generator backup)

Hybrid systems are designed for applications where there is grid power that is available for backup and to allow the system to work in auto switching mode.

Optionally these are used with a generator or wind turbine as an extra 2nd backup to support the battery bank if load shedding or unstable grid is a big problem.

These systems work with specially designed lead acid 2v deep cycle batteries for long-term cycling or can work with GEL or AGM 12v batteries that have a shorter lifespan.  

Lead acid 2v cells last 10-15 years depending on D.O.D and GEL or AMG 12v cells last 4-7 years depending on D.O.D.  If you are in it for the long term then GEL or AMG is not recommended.

These systems are mostly designed on the kwh usage of the load requirements.

In the case you use more kwh then what the system was designed for or over the limit, the system will automatically switch back to grid mode for the grid to supply the load or if it is set up it will charge batteries from the grid.

Return on investment would be +-8-10years.

Scaling these systems is not a problem, smallest 1kwh up to 1000kwh….

 

CONTACT US  today for more information on this…

Full Hybrid systems (Off-grid & Grid Tie with grid/generator backup &  can Grid-tie)

Full Hybrid systems are designed for applications where there is grid power available for backup.    These can be used with a generator or wind turbine as an extra 2nd  backup to support the battery bank if load shedding or if an unstable grid is a big problem.

These systems can export (feedback) to the grid if it’s allowed by your local authority and if it is not allowed then a solar block can be installed to prevent export.

  • Island function allows the system to work off-grid as well.
  • System has two load outputs, one for essential loads and other for non-essential loads. When it is load-shedding the non-essential loads will disconnect and inverter will supply only essential loads.

These systems work with specially designed lead acid 2v deep cycle batteries for long term cycling or can work with GEL or AGM 12v batteries that have a shorter lifespan.   Lead acid 2v cells last 10-15 years depending on D.O.D and GEL 12v cells last 4-7 years depending on D.O.D.    If you are in it for the long term then GEL or AMG is not recommended.

These systems are mostly designed on the kwh usage of the load requirements.    When you are over the kwh limit that the system was designed for then the system will automatically switch back to grid mode for the grid to supply the load or if it is set up it will charge batteries from the grid.

Certain grid hybrid Inverters can supply load from the grid and Pv at the same time.

Return on investment would be +-8-10 years.
Scaling these systems is not a problem, smallest 1kwh up to 1000kwh….


CONTACT US  today for more information on this…

Backup Power / UPS ( Use grid power as charger   or   Pv – optional )

These systems are usually designed where the main purpose is backup power.   These systems are standby systems and do not offer cost saving on electricity.

When the grid is not available, backup is given to critical components only and serves mainly as one large UPS supplying essential loads in the case of a power failure.

The backup time depends on the battery design.   More items on the load mean the more batteries you need.      The autonomy in the batteries may last 6-48 hours depends on design.

Load kwh (units) = kwh (units) available in batteries.

 

CONTACT US  today for more information on this…

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Tesla Power Wall & Solar Edge Inverter

Eco Trades is an authorized dealer & installer and part of only a few in South Africa that can install these products.

The Tesla power wall system has different options for certain customers.

Notice: As far as we know did Tesla stop supplying to South Africa

CONTACT US  today for more about Tesla Power Wall and why you may need this…

Pivot or Irrigation Systems 

These solar systems are not stand-alone systems and only reduces kwh usage as a cost saving.    This system is a grid-tie system as explained under GRID-TIE section above at the top of this page.

 

CONTACT US  today for more information on this.