Short answer: you do not need solar panels to start protecting your home from outages. A practical beginner route is to begin with a correctly sized inverter and battery, let the grid recharge the battery, then add solar panels later when budget and roof conditions allow. The system can grow in stages if the inverter, battery voltage, MPPT capacity, protection and installation are chosen with expansion in mind from day one.
The simplest way to understand backup power
A backup system has three jobs: the inverter converts battery DC power into household AC power, the battery stores energy, and the electrical installation decides which circuits remain powered when the grid is unavailable. Solar panels are an optional energy source that can be added to recharge the battery and power daytime loads.
This distinction is important for first-time buyers. A customer who mainly wants Wi-Fi, lights, TV, refrigeration and a few plugs through an outage may not need to install panels immediately. Starting with a compatible inverter/battery platform can make the project more affordable and easier to expand.
Whitehouse beginner roadmap: from backup to solar
| Stage | What you add | What it achieves | What to plan for next |
|---|---|---|---|
| 1. Measure your loads | Appliance list, watts, hours and essential circuits | Prevents buying too small or unnecessarily large | Future geyser, pump, aircon or business loads |
| 2. Start with inverter + battery | Grid-charged backup | Keeps selected loads running when supply fails | Choose an inverter with suitable PV inputs if solar is planned |
| 3. Add monitoring | Wi-Fi/app/CT or battery monitoring as supported | Shows battery SOC, load, grid use and solar later | Use the data to refine system behaviour |
| 4. Add solar panels | PV array + DC protection + mounting | Reduces grid energy use and recharges batteries from sunlight | Stay inside inverter MPPT voltage/current limits |
| 5. Add storage | Compatible battery expansion | Longer backup and more stored solar | Confirm BMS compatibility, current limits and parallel rules |
| 6. Optimise loads | Timers, essential/non-essential circuits, smart scheduling | Uses solar when it is available and protects batteries | Move high-energy loads into daylight where sensible |
| 7. Consider larger/off-grid design | More PV, storage, redundancy and possibly generator support | Greater energy independence | Off-grid requires worst-case weather and load planning |
What can I buy first?
For smaller essential-load systems, Whitehouse currently lists the Esener 1kW inverter + 1.28kWh lithium battery combo and Esener 3.6kW inverter + 2.56kWh lithium battery combo.
For a 48V home platform with more growth potential, examples include the Luxpower SNA5000 5kVA inverter with Wi-Fi, Shoto 48V 5.12kWh lithium battery and Volta Stage 1 New Gen 5.12kWh battery. Always confirm battery-inverter communication and current limits before pairing products.
How does inverter-and-battery backup work without solar?
When grid power is available, the inverter can power loads and charge the battery according to its configuration. When grid power fails, a correctly installed backup output supplies the circuits selected for backup. When power returns, the inverter resumes its configured grid/charging behaviour.
The battery does not create electricity. Without solar, the energy stored in it ultimately comes from the grid or another compatible charging source. Adding PV later changes the economics because daytime sunlight can supply loads and charge the battery.
How much solar can I add later?
Do not use inverter AC size alone to decide panel quantity. Every inverter has limits for maximum PV input power, MPPT voltage range, maximum input voltage and current per tracker. For example, the current Whitehouse listing for the Luxpower SNA5000 states up to 6000W PV input with dual MPPT, while the Deye 8kW listing states 10.4kW maximum PV input and two MPPT trackers. These are different specifications and must be checked for the exact model.
Whitehouse currently stocks panels including the 585W JA Solar Panel and 595W JA Solar Panel for appropriately designed systems.
What does the DB board do?
The distribution board is where circuits are divided and protected. In a backup installation, the electrician may separate essential circuits from non-essential or high-load circuits. That prevents appliances such as large resistance heaters, ovens or other unsuitable loads from unexpectedly overwhelming the inverter or battery.
The DB is also where protection and isolation are coordinated. It should never be treated as a cosmetic part of the project.
How should I monitor usage?
Monitoring lets you see what the system is actually doing instead of guessing. Depending on the platform, you may be able to view battery state of charge, battery current, load power, solar production, grid import, alarms and historical trends. Victron's SmartShunt documentation, for example, explains how voltage and current measurements are used to calculate state of charge and “time to go,” while connected monitoring can retain historical operating information. See Victron's battery-monitoring explanation.
Should I start now if load shedding is currently suspended?
As of October 2026, Eskom's public status page shows no active load shedding, and Eskom has reported much stronger generation performance. That is positive. It does not remove the financial case for energy efficiency, tariff exposure, local outages, load reduction in some areas, storms, maintenance interruptions or business-continuity planning. Eskom's 2026/27 average direct-customer tariff increase is 8.76%, with municipal bulk tariffs averaging 9.01%. See Eskom's 2026/27 tariff notice.
Can I pay for the project in stages?
Yes. A phased project is often more sensible than buying random components. Whitehouse also offers Stitch Pay Later at checkout for eligible purchases, allowing approved customers to split qualifying orders into 2–6 equal monthly instalments, interest-free. Eligibility and the options offered are determined by Stitch at checkout. See Stitch's official Pay Later guide.
Beginner FAQ
Do I need solar panels for backup power?
No. An inverter and battery can provide backup without PV, provided the system is designed and installed correctly.
Can I add panels later?
Usually yes if the inverter has suitable PV capability and the planned array remains inside its MPPT and voltage/current limits.
Can I add another battery later?
Often yes, but the battery model, chemistry, voltage, BMS protocol, age, firmware and manufacturer rules matter.
Can I eventually go off-grid?
Potentially, but an off-grid system must be designed around seasonal solar resource, worst-case weather, daily energy use, peak loads and reserve capacity. It is more demanding than ordinary backup.
Get a tailored Whitehouse solar or backup-power quote
Whitehouse Lighting & Electrical can help you build a solution around your actual loads, budget, property and expansion plans. We do not rely only on the products shown online; where a project needs a different inverter size, battery bank, protection arrangement or commercial configuration, we can source around the brief.
We arrange solar and backup-power solutions for homes and businesses across South Africa, including Secunda, Ermelo, Mpumalanga, Mbombela/Nelspruit, Johannesburg, the East Rand, Pretoria, North West and Bloemfontein. Panels, batteries and other bulky equipment may need a dedicated delivery quotation depending on route and handling.
Important: this guide is for planning and buying decisions. Cable sizes, protection ratings, earthing, DB alterations, PV strings and final system settings must be confirmed for the actual installation by appropriately qualified persons and the relevant manufacturer documentation.
