Save money & beat loadshedding

Battery-Tied Solar PV

What is a Battery tied Solar PV System?

When the grid is off, you stay on

If you are looking for energy security during load shedding, plus savings on your electric bill for your residential home, office, company or commercial building then a battery-tied system with a hybrid inverter may be the solution you need.

Installing batteries and a special hybrid inverter for your solar PV system means that during times when the grid is down, some essential loads in your building will stay on, while non-essential loads will turn off. This is the difference between a battery-tied system and a grid-tied system (link to page), the battery-tied system stays on during load shedding while the grid-tied system turns off during load shedding.

 
THIS SYSTEM ALSO PROVIDES SAVINGS ON ELECTRICITY

With this system, your electric bill will come down substantially, thanks to the solar PV panels – the only drawback of this system is the initial cost; batteries and the necessary hybrid inverter can be pricey. If budget is a challenge, starting with a battery backup solution that is modular and fully expandable to solar PV in the future may be the smart way to go. Alternatively, if savings on your bill are most important to you, you can opt for a more cost effective grid-tied solar system.

"Fantastic service from a professional team. I have been in contact with AWPower for a number of years now and their service has been excellent! The most recent project was installing a hybrid solar system at my residence. I was kept updated throughout the design, costing and inventory ordering process and installation took less than 2 days. The team are always available to attend to my queries and can adjust my system remotely to cater for changing requirements caused by higher levels of loadshedding. I highly recommend AWPower."

Ruchir Severaj Google Review

Why choose a Battery Tied Solution

Main Benefits of Battery Tied Systems

Any questions?

Frequently Asked Questions

The percentage of your energy needs that the battery-tied solar PV solution system will produce depends on the space and orientation of your roof, and the local municipality’s generation limits for your property.

For a company, the business case for installing a battery-tied solar system as a backup solution is good, having a low payback period (usually under six years) together with the falling costs of solar system equipment, rising electrical tariffs and tax incentives of a 100% tax-deductible depreciation allowance in the first year of installation. Your office, factory or commercial building will benefit from the savings and energy security that renewable battery-tied solar, grid-tied or off-grid energy systems bring.

To get a quick estimate on a solar installation with projected monthly savings, use our Solar Calculator here.

When the power goes off during loadshedding, the hybrid backup inverter will continue to power some chosen “essential” loads from solar power (during the day), as well as batteries. Not all loads in the building will remain on during loadshedding. By adding battery-backup and choosing a larger hybrid inverter will mean that more loads can run when the grid turns off during loadshedding– but this will increase the cost of the backup system.

Do you want to learn more about getting switched on with Solar during loadshedding? Click here for our in depth article.

 

Yes, thanks to the use of a battery-powered hybrid inverter, your photovoltaic panels will continue to produce power during loadshedding, however, this will only feed the “essential” loads that are on the output of the hybrid inverter.

Do you want to learn about financing your solar installation with MFC, a division of Nedback? Click here.

This depends on your municipality, as some do not have the capability for you to sell excess solar energy back to the grid. For the highest savings, we recommend maximising your personal use (also known as self-consumption) of the available solar power gained from your solar system instead of aiming to export to the grid. In our experience as solar PV installers, we have not come across any municipality that will buy exported solar power at the same rate for which they sell their own power; it is usually less, resulting in lower savings if you export than if you used the solar power yourself.

To maximise your self-consumption and also to have power during loadshedding, we recommend adding some backup battery capacity to your grid-tied solar system, so that excess solar power gets stored in the battery during the day; and you can use this stored energy from the battery in the evening and at night, or during periods of loadshedding.

This doesn’t mean that it is a bad idea to have the option of exporting to the grid. In cases where your battery is full and there is excess solar power, exporting to the grid would be the next best solution to fully utilise the potential of your battery-tied solar photovoltaic system. To export to the grid you will need a special meter installed by the municipality. In Cape Town, residential customers have to pay a fee to get the meter installed whereas commercial customers (if they fulfill all requirements) do not have to pay a fee to have the meter installed.

Yes, generator integration is possible with this system, as many hybrid inverters have unique inputs for a generator, and others have built-in software that makes generator integration possible.
From our first meeting with the representatives of AWPower it was an absolute pleasure doing business with them. They guided us through the process in a very professional way always putting the well-being of the client first.

Their final presentation to the Pinewood stakeholders was of an exceptionally high standard. Their workmanship, supervision of workers and the administration are of equally high standards. I will definitely recommend them to any prospective client.
image of man from pinewood village
Pieter Janse van Rensburg
Pinewood Village Operations Manager

Get in touch

Is this the right solution for you?

Whether you’ve made a final decision or not, please feel free to contact us for further information, advice or to arrange a consultation. 

Case Studies

AWPower Past Projects

The big question...

How much will a solar PV or battery backup system cost me?

Whilst prices may vary slightly for different scenarios, we have put together sets of standard pre-priced solution estimates that will give you an idea of what sort of investment you can expect. Simply click the relevant button below to find out more depending on whether you want a solar PV system (system charged by solar panels) or a battery backup system (system charged by the grid):

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