1. What is a Solar kWh per Day Calculator?

Definition: This calculator estimates the daily energy consumption in kilowatt-hours (kWh) based on appliance wattage and hours of use.

Purpose: It helps solar energy users and homeowners determine their daily electricity needs for sizing solar power systems.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• kWh/day — Daily energy consumption (kilowatt-hours)
• Wattage — Power rating of the appliance (watts)
• Hours — Daily usage time (hours)

Explanation: The wattage is converted to kilowatts (divided by 1000) then multiplied by hours of use to get daily consumption.

3. Importance of Daily kWh Calculation

Details: Accurate daily kWh estimation helps in sizing solar panels, batteries, and inverters correctly for off-grid or grid-tied systems.

4. Using the Calculator

Tips: Enter the appliance wattage (found on nameplate) and estimated daily usage hours. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my appliance wattage?
A: Check the nameplate or specification sheet. For devices with variable power, use average or maximum wattage.

Q2: Should I calculate for each appliance separately?
A: Yes, calculate each appliance's consumption then sum them for total daily kWh needs.

Q3: What's a typical daily kWh for a home?
A: Average US home uses about 30 kWh/day, but this varies greatly by appliances and usage patterns.

Q4: Does this account for solar system efficiency?
A: No, this is just consumption. For solar sizing, divide by system efficiency (typically 0.7-0.9).

Q5: How does this relate to solar panel wattage?
A: Divide daily kWh by peak sun hours to estimate required solar panel wattage.