Buying without calculating your power needs
A system that is too small may struggle to run your appliances. One that is unnecessarily large can increase your upfront cost.
Buying solar should give you dependable power, not unexpected expenses and batteries that run out too early. Discover the common mistakes Ugandan homeowners make and how to choose a solar system that fits your needs.
Solar panels alone do not guarantee reliable electricity. Your system also needs the right battery, inverter, cables, protection devices and installation.
In Uganda, solar can power lights, televisions, routers, fridges, office equipment and many other appliances. However, the results depend on how well the system is matched to your daily electricity use and the amount of backup you need.
Choosing equipment based only on the lowest price or a sales promise can leave you with insufficient power, short battery runtime or costly upgrades.
A reliable solar installation starts with suitable equipment and careful planning.
Use this checklist before paying for a home, business or off-grid solar installation.
A system that is too small may struggle to run your appliances. One that is unnecessarily large can increase your upfront cost.
The cheapest panel may not offer the best value if its specifications, quality assurance or warranty are unclear.
Trees, buildings, roof structures and other obstructions can reduce solar generation. Roof direction and mounting also affect performance.
A battery that is too small may run out before morning. Battery capacity alone also does not tell you how much energy you can safely use.
Your inverter must handle the appliances you intend to run. Some equipment draws considerably more power when starting.
Poor cable sizing, loose connections and missing protection can cause overheating, equipment damage and safety hazards.
Two quotes with similar prices may include different panel capacities, batteries, inverter ratings, installation work and after-sales services.
A warranty may cover manufacturing defects but exclude installation faults, misuse, unsuitable operating conditions or other damage.
An attractive quotation does not prove that an installer has the appropriate skills or permits for the work.
Dust, damaged cables, battery ageing and new appliances can affect performance after installation.
Your energy needs should determine the system size, not an arbitrary panel count or a package name.
Estimate how much electricity your appliances use each day. Multiply each appliance's wattage by its expected hours of use, then add the results together.
For example, a 100-watt appliance running for five hours consumes approximately 500 watt-hours, or 0.5 kWh, before system losses.
Request enough detail to compare the actual equipment and services offered by different suppliers.
| Item | Questions to ask |
|---|---|
| Solar panels | What is the total rated wattage, manufacturer, model and warranty? |
| Battery | What is the chemistry, nominal capacity, usable capacity and warranty? |
| Inverter | What is its continuous output, surge capability and battery compatibility? |
| Protection | Which isolators, breakers, surge protection and earthing provisions are included? |
| Installation | Does the price include mounting, wiring, labour, testing and commissioning? |
| Warranty and support | Who handles repairs and claims, and what is excluded from the warranty? |
| Future expansion | Can the system be expanded, and what limits apply to the inverter and batteries? |
Solar systems combine electrical equipment, batteries, outdoor installations and, in many cases, rooftop work. Safe installation matters as much as choosing the right products.
Uganda's Electricity Regulatory Authority provides information about installation permits and the applicable requirements for electrical installation work.
Follow these steps before committing to a solar installation for your home, shop, office or other property.
List your appliances, operating hours, daytime use and required backup duration.
Review panel, inverter, battery and protection specifications, not just the package price.
Ask about experience, applicable permits, installation safety and after-sales support.
Obtain a written quotation, warranty documents, installation scope and handover details.
One of the most common mistakes is buying a system without assessing actual energy consumption and peak power requirements. The result can be a system that does not run the intended appliances for long enough.
Possible reasons include high energy consumption, insufficient battery capacity, limited charging, shading, battery ageing, incorrect settings or a fault. A qualified technician can inspect the system and identify the cause.
Sometimes. Expansion depends on inverter and charge-controller limits, battery compatibility, wiring, roof space and the original system design. Ask about expansion before buying.
Not necessarily. Price alone cannot establish quality. Compare specifications, documentation, warranty conditions, supplier support and suitability for your system before deciding.
Not by itself. An inverter converts power, while available backup energy mainly depends on the battery and other system factors. A larger inverter cannot compensate for an undersized battery or inadequate solar charging.
Ask for evidence of relevant experience and qualifications, references, and applicable electrical installation permits. You can consult the Electricity Regulatory Authority for information about permit requirements.
Cleaning frequency depends on dust, nearby trees, bird droppings, weather and the manufacturer's instructions. Inspect panels periodically and arrange safe cleaning when dirt is affecting performance. Avoid climbing onto a roof or cleaning equipment in unsafe conditions.
Contact BF Solar to discuss the appliances you want to run, your location, backup requirements and budget. Share your priorities so the appropriate system options can be assessed.
Need help choosing solar panels, batteries or an inverter? Contact BF Solar to discuss your requirements and explore a system suited to your property and power needs.