1. What is the kWh Comparison Calculator?

The kWh Comparison Calculator estimates energy cost savings by comparing old and new energy consumption. It helps quantify the financial benefits of energy efficiency improvements.

2. How Does the Calculator Work?

The calculator uses the energy savings formula:

Where:

• \( E_{old} \) — Old energy consumption (kWh)
• \( E_{new} \) — New energy consumption (kWh)
• \( C \) — Cost per kWh ($/kWh)

Explanation: The formula calculates the monetary savings from reduced energy consumption by multiplying the energy difference by the cost per unit.

3. Importance of Energy Savings Calculation

Details: Calculating energy savings helps evaluate the financial return on energy efficiency investments, supports decision-making for upgrades, and demonstrates environmental benefits through reduced energy consumption.

4. Using the Calculator

Tips: Enter old and new energy consumption in kWh, and the cost per kWh in dollars. All values must be positive numbers. Ensure E_new is less than or equal to E_old for meaningful savings.

5. Frequently Asked Questions (FAQ)

Q1: What if my new energy usage is higher than old?
A: The calculator will show negative savings, indicating increased energy costs rather than savings.

Q2: How accurate is this savings calculation?
A: The calculation provides an estimate based on input values. Actual savings may vary due to fluctuating energy rates and usage patterns.

Q3: Can I use this for different time periods?
A: Yes, but ensure all values (E_old, E_new, and cost) correspond to the same time period for accurate comparison.

Q4: Does this account for tiered pricing?
A: No, this calculator uses a flat rate per kWh. For tiered pricing, a more complex calculation would be needed.

Q5: What's the typical range for cost per kWh?
A: Residential electricity rates typically range from $0.10 to $0.30 per kWh, but vary significantly by location and provider.