Wattage Formula:
From: | To: |
Definition: This calculator determines the solar panel wattage needed based on your energy consumption and usage time.
Purpose: It helps homeowners and solar installers properly size solar panel systems for specific energy needs.
The calculator uses the formula:
Where:
Explanation: The energy in kWh is converted to watt-hours (×1000) then divided by usage hours to determine the continuous wattage needed.
Details: Accurate wattage calculation ensures your solar system can meet your energy demands without over- or under-sizing the installation.
Tips: Enter your daily kWh consumption and the number of hours you need power each day. All values must be > 0.
Q1: Why multiply kWh by 1000?
A: This converts kilowatt-hours to watt-hours (1 kWh = 1000 Wh).
Q2: How do I find my kWh consumption?
A: Check your electricity bill or use a kWh meter to measure appliance usage.
Q3: What time period should I use?
A: Typically use daily kWh and hours of sunlight, but adjust for your specific needs.
Q4: Does this account for solar inefficiency?
A: No, consider adding 20-30% to the calculated wattage for real-world conditions.
Q5: How does this relate to solar panel sizing?
A: The result shows the continuous wattage needed; divide by peak sun hours for total panel capacity.