Quick Answer: EagleEyeSolutions recently completed a hybrid residential solar installation in Hillcrest, designed to provide reliable backup power during loadshedding while reducing the household's electricity costs. The system combines 10 high-efficiency solar panels, an Axil hybrid inverter and an Axil LiFePO4 lithium battery. It allows the home to use solar power during the day, store excess energy for later and draw from the grid when needed, so essential appliances keep running through power cuts.
More homeowners across Durban and the Upper Highway are turning to solar to keep the lights on during loadshedding and to take control of rising electricity costs. In this case study, we walk through a recent residential solar installation for a family in Hillcrest, from the first site visit and consultation through to the equipment we chose and how the system performs. It shows how a carefully planned hybrid system can provide dependable backup power, reduce a household's reliance on the grid and make better use of the energy it generates.
Project Overview
· Location: Hillcrest, Durban
· Property type: Residential home with a standard tiled roof
· Client goal: Keep essential appliances running during loadshedding and reduce monthly electricity costs
· System type: Hybrid solar system with lithium battery backup
· Equipment: 10 solar panels, an Axil hybrid inverter and an Axil LiFePO4 battery
The homeowners were renovating their house, and adding a solar energy system was a key part of the project. Their main goal was a system that would keep essential appliances running during loadshedding while also helping to reduce their monthly electricity bill. After an initial consultation and an assessment of their energy needs and roof layout, we recommended a hybrid solar system with 10 solar panels, an Axil hybrid inverter and an Axil LiFePO4 battery for reliable backup.
Why We Recommended a Hybrid Solar System
A hybrid solar system sits between a grid-tied and an off-grid system, combining the benefits of both. The home stays connected to the grid, but it also has battery storage to keep power flowing during loadshedding and outages. During the day, the solar panels power the home directly and any surplus energy charges the battery. In the evening, or when the household is running energy-hungry appliances, the system draws on the battery and then the grid as needed. Our guide to the difference between on-grid, off-grid and hybrid solar systems explains each option in more detail.
We chose an Axil LiFePO4 (lithium iron phosphate) battery for this installation because of its long lifespan and stable performance. Lithium iron phosphate batteries are known for their high efficiency and ability to handle deep, regular charge cycles, which makes them well suited to homes that need dependable power through frequent outages. If you are comparing battery types, our article on gel vs lithium-ion batteries covers the main differences.
System Design and Equipment
The Hillcrest installation included:
· Solar panels: 10 high-efficiency panels
· Inverter: Axil hybrid inverter
· Battery: Axil LiFePO4 lithium battery
We designed the system to balance three core elements: energy generation, storage and consumption. The 10-panel array supplements the home's supply from the grid, so the family can run many of their day-to-day activities on solar power and reduce their monthly bill. The hybrid inverter manages the switch between solar, battery and grid power automatically, giving the homeowners peace of mind during power interruptions. For more on choosing an inverter, see our guide to the best inverter for home use in South Africa.
Challenges and Solutions
Roof Position and Tree Cover
The home has a standard tiled roof, which is usually straightforward for mounting panels. However, the house sits below the road and is surrounded by mature trees, a common situation on Hillcrest's leafy properties. Shade can significantly reduce a solar array's output, so we planned the panel layout and orientation carefully to make the most of the available sunlight.
Sizing for Loadshedding
The client's main priority was reliable backup power, so choosing the right battery and inverter size was essential. We started by reviewing the household's average monthly electricity use in kilowatt-hours (kWh), then worked backwards to design a system that could keep essential appliances such as the fridge, lighting and other key devices running during outages.
The Solution
We installed a hybrid solar system with carefully positioned panels and a correctly sized Axil LiFePO4 battery. The result is a system matched to the household's real needs, which the family is now using every day.
The Installation Process
The installation took a few days, and our team worked around the family so they could carry on with their normal routines. The process included:
1. Site survey and design approval. We visited the home to understand the family's energy use, electrical setup and roof type, then prepared a system design and made sure the client was happy with the proposal before going ahead.
2. Panel installation. Our team mounted the 10 solar panels on the tiled roof, positioning them for the best possible sun exposure.
3. Inverter and battery installation. We installed the Axil hybrid inverter and the LiFePO4 battery, allowing the home to store excess solar energy.
4. Electrical connections and testing. We connected the system to the home's electrical supply and carried out thorough tests to make sure everything worked correctly.
5. Commissioning and handover. Finally, we walked the client through the system, answered their questions and handed it over so they could start using solar power straight away.
Estimated Backup Runtime
The Axil LiFePO4 battery in this installation provides approximately 5 kWh of usable capacity. How long it lasts during an outage depends on how much power the home is drawing at the time:
· At a 2 kW load, for example lights, a fridge, Wi-Fi, a TV and some other appliances running together, the battery would last roughly two to two and a half hours.
· At a 500 W load, with only essentials such as lights, Wi-Fi and the fridge running, it could last up to around eight to nine hours without fully discharging the battery.
These figures are estimates, and actual runtime depends on the appliances in use, the battery's state of charge when the power goes out and how much solar power is available at the time. Keeping high-power appliances such as kettles, geysers and ovens off the backup supply makes the biggest difference. Our article on whether solar battery storage is worth the cost explains how to think about battery size.
Results and Benefits
The Hillcrest homeowners are now enjoying the benefits of their new hybrid solar system, installed by a local Durban solar company.
6. Reliable backup power. Key appliances keep running during loadshedding, reducing disruption to work and daily routines.
7. Lower grid dependence. Using solar power during the day means buying less electricity from the grid, helping to reduce monthly bills.
8. Room to grow. A hybrid system provides a solid foundation if the family wants to expand their solar or battery capacity in the future.
9. A more sustainable home. Generating their own clean energy helps the household reduce its carbon footprint.
Thinking About a Hybrid System for Your Home?
Every home is different, so the right system depends on your energy use, your roof and how much backup power you need. Keep in mind that a hybrid system connected to the grid normally needs to be registered with your electricity supplier, and in eThekwini, approval is required before installation. Our guide to registering your solar system in Durban explains what is involved, and you should always confirm the current requirements with your supplier.
Frequently Asked Questions
How long does a residential solar installation take?
This Hillcrest installation took a few days. The timeframe for your home will depend on the size of the system, your roof and your electrical setup.
Can a hybrid system run during loadshedding?
Yes. When the grid goes down, the hybrid inverter switches the home's essential circuits over to battery and solar power, so key appliances keep running.
Can I add more batteries or panels later?
Many hybrid systems can be expanded, but it depends on the inverter and battery you choose. Any changes to a grid-connected system may also need to be approved by your electricity supplier, so plan upgrades with your installer.
Get a Solar System Designed for Your Home
If you live in Hillcrest, Kloof, Botha's Hill or anywhere in greater Durban and want reliable backup power, our team can design a system around your home and your budget. Find out more about our Durban solar installer services or browse our solar packages. Call us on 031 764 7087 or 082 443 0230, or contact us online to book a site visit and a free quote.