Selected Cosmopolitan Projects homes now come standard with a backup inverter system, giving homeowners uninterrupted power during load shedding and unplanned outages. Here's everything you need to know about how your inverter power backup works, from move-in day activation to ongoing warranty protection.
The backup inverter system is designed to keep essential power running in your home when the grid goes down. As a battery backup inverter system, it automatically supplies power to selected circuits during an outage, so load shedding no longer means sitting in the dark. If you'd like a broader overview of using electricity safely in your home, see our electrical safety tips.
Your inverter backup system warranty is activated the same day you move into your home, alongside your fibre connectivity activation. On this day:
Once your warranty is activated, the warranty time lapse period begins (the window during which your power inverter for home backup is covered under the manufacturer's warranty terms). Managing your household power doesn't stop at the inverter, either; our complete prepaid electricity meter guide covers how to top up, monitor usage, and avoid running out unexpectedly
At activation, you'll be handed a backup inverter installation test report sheet. This document confirms that the system has been installed to standard and gives you a clear record of the original configuration; important because:
Keep this report sheet in a safe place along with your user manual.
Every homeowner receives:
A backup inverter is one of several features that make estate living more resilient, read more on why buying a security estate house makes sense.
The warranty is activated on the day the homeowner moves in, at the same time a technician activates the inverter system itself.
It's the active coverage period that begins once the inverter system's warranty has been activated by the on-site technician.
Tampering with or altering the system's configuration during the warranty period will void the manufacturer's warranty.
Yes. A technician provides basic on-site training, sets up your mobile monitoring app, and leaves you with a user manual for reference.
It confirms the inverter system was installed to standard and serves as a reference record of the original configuration for the duration of the warranty.
This depends on whether your home has both a backup inverter system and a solar geyser. These are development-specific features, not standard across every Cosmopolitan home, so check your handover documentation or installation test report sheet to confirm what applies to your house. The standard system uses a Sunsynk 5kW inverter paired with a 5.12kWh battery where both are present. The inverter's power rating is well above what a geyser element draws (normally 3000–4000W), so power output isn't the limiting factor, battery capacity is.
Running a geyser element continuously on a 5.12kWh battery would use up the charge in around 1.5 hours, leaving less capacity for lighting, wifi, and security systems during longer outages. Because of this, geysers are generally left off the backup circuit selection in standard setups, though this can vary by installation. Check your installation test report sheet to confirm exactly which circuits are covered in your home, and see our solar powered geyser tips for how a solar geyser reduces how often the electric element needs to run at all.
DISCLAIMER: The recommendations herein are given in good faith and are meant to guide the user. The recommendations imply no guarantee since the conditions of use and method of application are beyond our control.