Energy Formula:
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Definition: This calculator converts power in kilowatts (kW) to energy in kilowatt-hours (kWh) based on time of operation.
Purpose: It helps determine energy consumption or production over time, useful for electricity billing, solar power calculations, and energy management.
The calculator uses the formula:
Where:
Explanation: Energy is simply power multiplied by time. 1 kWh equals 1 kW of power used for 1 hour.
Details: While kW measures instantaneous power, kWh measures total energy consumed or produced over time, which is what utilities bill for.
Tips: Enter the power in kilowatts and the time in hours. For minutes, divide by 60 (e.g., 30 min = 0.5 hours).
Q1: What's the difference between kW and kWh?
A: kW measures power (rate of energy use), while kWh measures energy (total consumption over time).
Q2: How do I convert kWh to kW?
A: Divide kWh by hours to get kW (reverse of our formula).
Q3: What's a typical household kWh usage?
A: Average US home uses about 900 kWh per month, but varies by size, appliances, and location.
Q4: Can I use this for solar panels?
A: Yes! Multiply panel kW rating by peak sun hours to estimate daily kWh production.
Q5: How accurate is this calculation?
A: Perfectly accurate for constant power. For variable power, you'd need to sum multiple calculations.