1. What is Watt to kWh Conversion?

The conversion from watts (W) to kilowatt-hours (kWh) is essential for understanding energy production and consumption over time. It helps solar panel owners estimate their system's energy output.

2. How Does the Calculator Work?

The calculator uses the simple energy conversion formula:

Where:

• \( W \) — Power in watts
• \( h \) — Time in hours
• 1000 — Conversion factor from watts to kilowatts

Explanation: This formula converts instantaneous power (watts) to energy (kilowatt-hours) by accounting for the duration of power production.

3. Importance for Solar Panels

Details: Solar panels are rated in watts (peak power output), but electricity bills and energy storage are measured in kilowatt-hours. This conversion helps estimate daily/monthly energy production.

4. Using the Calculator

Tips: Enter your solar panel's wattage (found in specifications) and the number of hours it will operate at that power level. For daily production, use average peak sun hours for your location.

5. Frequently Asked Questions (FAQ)

Q1: Why divide by 1000?
A: There are 1000 watts in a kilowatt. Since energy is power multiplied by time, we convert watts to kilowatts before multiplying by hours.

Q2: How many kWh does a 100W solar panel produce?
A: In 5 hours of peak sunlight: 100W × 5h / 1000 = 0.5 kWh per day.

Q3: What's the difference between watts and watt-hours?
A: Watts measure power (rate of energy), watt-hours measure energy (power × time). kWh are just thousands of watt-hours.

Q4: Should I use nameplate rating or actual output?
A: For estimates, use nameplate rating. For accurate calculations, use actual measured output which accounts for efficiency losses.

Q5: How does this relate to my electricity bill?
A: Utilities charge per kWh. This calculator helps estimate how much your solar system can offset your bill.