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Energy Efficiency Formula:
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The Energy Efficiency Calculator estimates potential savings from reducing energy consumption. It calculates financial savings based on the difference between old and new energy usage multiplied by the electricity rate.
The calculator uses the energy efficiency formula:
Where:
Explanation: The equation calculates the financial savings from reducing energy consumption by multiplying the energy reduction by the cost per unit of energy.
Details: Calculating energy efficiency savings helps households and businesses understand the financial benefits of energy-saving measures, informs investment decisions in energy-efficient technologies, and supports environmental sustainability goals.
Tips: Enter old and new energy consumption in kilowatt-hours, and the electricity rate in GBP per kWh. All values must be valid positive numbers, with new consumption typically lower than old consumption to show savings.
Q1: What if my new consumption is higher than old consumption?
A: The calculator will show negative savings, indicating increased costs due to higher energy usage.
Q2: How accurate are the savings estimates?
A: Estimates are based on the inputs provided. Actual savings may vary due to factors like seasonal variations, changing electricity rates, and specific tariff structures.
Q3: Where can I find my electricity rate?
A: Your electricity rate is typically shown on your energy bill. It may be a single rate or vary by time of use (e.g., day/night rates).
Q4: Does this calculator account for standing charges?
A: No, this calculator only estimates savings from reduced energy consumption. Standing charges are typically fixed costs that don't change with usage.
Q5: Can I use this for business energy calculations?
A: Yes, the same formula applies to both domestic and commercial energy savings calculations.