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The Ultimate Solar System Calculator & Sizing Guide
Tired of guessing your solar needs? Our free calculator makes it simple. Select your appliances to instantly get a reliable estimate for the Inverter Size (kVA) and Battery Capacity (Ah) you require to beat load shedding. Then, read our detailed guide below to understand the calculation process like an expert.
A Step-by-Step Guide to Your Home Energy Audit
Follow these five simple steps to get a clear picture of your daily energy requirements.
Step 1: List All Your Appliances
Make a comprehensive list of every device you want to power with your solar system, from fridges and TVs to lights and pumps.
Step 2: Find the Wattage of Each Appliance
Every device has a power rating in Watts (W), usually found on a sticker. Use our reference table below for typical wattages.
Step 3: Estimate Daily Usage in Hours
For each appliance, estimate how many hours it runs per day (e.g., a TV for 5 hours, a fridge compressor for 8 hours total).
Step 4: Calculate Daily Energy Use (Watt-hours)
Multiply the Wattage by the hours of use for each appliance to get its daily consumption in Watt-hours (Wh).
Step 5: Get Your Grand Total
Add up the Watt-hours for all appliances to get your total daily energy need. Divide by 1,000 to get the kilowatt-hours (kWh) required.
Appliance Wattage Reference Chart
| Appliance | Typical Wattage (Watts) |
|---|---|
| LED Bulb | 10W |
| LED TV | 150W |
| WiFi Router | 15W |
| Laptop Charger | 65W |
| Refrigerator / Freezer | 200W |
| Borehole Pump (1hp) | 750W |
Recommended System Size Based on Daily Usage
This chart provides a quick reference to help you match your daily energy needs (in kWh) to the most appropriate solar system size (in kVA).
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Solar Reviews Zimbabwe is your trusted source for finding the best solar accessories in Zimbabwe. We partner with top solar brands and installers to provide valuable, unbiased insights that help you make smart choices. Solar Reviews Zimbabwe is your go-to independent resource for solar accessories in Zimbabwe.
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