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Solar Panels

How much power solar panels really produce, how many you need, and how to wire, tilt and size an array for your daily kWh.

Solar Panels

What Can a 1kW to 20kW Solar System Run? kWh per Day and Appliance List

How many kWh a 1kW, 3kW, 5kW, 10kW or 20kW solar system makes per day in the US, UK, Canada, Australia and Germany, and which home appliances each size can run.

October 3, 2026 · 8 min read
Solar Panels

How Many Solar Panels Do I Need? (Step-by-Step Calculator Method)

Work out exactly how many solar panels you need from your electric bill, your peak sun hours and your panel wattage, with worked examples for homes, cabins and RVs.

October 3, 2026 · 5 min read

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Appliance Wattage Guide

  • Refrigerator 150W (1.5 kWh/day)
  • 5,000 BTU Window AC 450W – 500W
  • Starlink Satellite 50W – 75W
  • Microwave Oven 1,000W – 1,500W
  • CPAP Machine 40W – 60W
  • 1/2 HP Water Well Pump 800W – 1,000W

About Solar Watt Pro

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Calculations provided for preliminary planning purposes only. Always consult a licensed electrician.