kWh to kWp Conversion Calculator

kWp Conversion Formula:

\[ P_{Wp} = \frac{E_{kWh} \times 1000}{t_{sun}} \]

System Size (Wp):

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1. What is a kWh to kWp Conversion Calculator?

Definition: This calculator converts energy consumption (kWh) to the required solar panel system size (Wp) based on peak sun hours.

Purpose: It helps solar installers and homeowners determine the appropriate solar panel system size needed to meet energy requirements.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{Wp} = \frac{E_{kWh} \times 1000}{t_{sun}} \]

Where:

\( P_{Wp} \) — Solar system size in watts-peak
\( E_{kWh} \) — Energy consumption in kilowatt-hours
\( t_{sun} \) — Peak sun hours per day

Explanation: The energy consumption is converted to watts (×1000) and divided by peak sun hours to determine the required solar panel capacity.

3. Importance of kWp Calculation

Details: Accurate kWp calculation ensures your solar system can meet your energy needs while optimizing system size and cost.

4. Using the Calculator

Tips: Enter your daily energy consumption in kWh and average peak sun hours for your location (default 4.5 hours). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What are peak sun hours?
A: Peak sun hours represent the equivalent hours of full sunlight intensity (1000 W/m²) your location receives daily.

Q2: How do I find my peak sun hours?
A: Check solar insolation maps or consult local solar installation companies for your area's average.

Q3: Why multiply by 1000 in the formula?
A: This converts kWh to Wh (1 kWh = 1000 Wh) for consistent units in the calculation.

Q4: Does this account for system losses?
A: No, consider adding 20-30% to the calculated Wp to account for typical system inefficiencies.

Q5: How does this relate to actual panel count?
A: Divide the Wp result by your chosen panel's wattage (e.g., 300W panels) to estimate number of panels needed.