20 Roan Cres, Randjespark, Midrand


(+27) 086 136 5974

Optimize your solar system and save money during the pause in loadshedding

Ultra-Power-Solar-Solutions Rent To Own

It is important to understand how your system is configured, while there is a loadshedding pause. Most solar systems in South Africa are designed to keep batteries at a certain level, typically between 40% and 100%, before each round of load-shedding. This ensures that there is enough power stored in the batteries to keep your lights and appliances running during power outages. However, when load-shedding is paused, this configuration can result in unnecessary costs.

Main Concerns

One of the main reasons for these additional costs is the use of grid power to top up your batteries when your solar panels are not generating enough power. For example, overnight power usage from appliances can slowly deplete your battery without solar power to compensate. Under normal load-shedding conditions, this is necessary to ensure that your battery remains at the desired level. However, when the risk of load-shedding is low or non-existent, using grid power becomes a waste of money.

To avoid these unnecessary costs, you can make changes to your solar system settings. If you have a smartphone app or a user interface on your inverter, you can easily adjust the settings yourself to ensure that your batteries are not being topped up by Eskom power. Alternatively, most solar system installers offer remote assistance and can make these changes for you free of charge. To determine the right settings, you need to establish how much battery capacity your home uses in a single round of load-shedding and the maximum depth of discharge level of your battery as specified by the manufacturer. By adding these percentages together and including a safety buffer, you can set the threshold for your system. As long as your battery does not deplete below this capacity, you can avoid unnecessary costs during the pause in load-shedding.


Grid Usage

The effectiveness of the grid usage strategy can be observed in the two graphs provided below. In the first graph, a noticeable spike in grid electricity consumption (indicated by the yellow bar) occurs shortly after 17:00, coinciding with the time when the sun is setting. This surge in grid usage is necessary to fully charge the battery to 100% in preparation for the household’s evening energy requirements.


In contrast, the second graph illustrates that the highest power consumption takes place during daylight hours when the sun is at its peak, enabling the solar panels to generate sufficient power. Consequently, the household can minimize reliance on grid electricity to maintain the battery’s charge, opting instead to replenish it with solar energy.

Future Measures

If your solar panels are not generating enough power to maintain your battery at the desired level, the system will utilize Eskom or municipal grid power to supplement it. While this additional expense is justified during load-shedding to ensure your lights and appliances remain operational, it becomes unnecessary and wasteful when load-shedding is paused. An example of this is the overnight power consumption from appliances, which gradually drains your battery without solar power to compensate. In future, when the likelihood of load-shedding is low or nonexistent, your system does not require grid power to maintain the battery’s charge. 


Featured News & Articles

Take the first step & say goodbye to load shedding forever

Enter your details below