Enter Your Home & Appliance Details
Energy Audit Summary
Estimated Monthly Consumption (kWh): -
Estimated Yearly Consumption (kWh): -
Total Cost (Monthly): -
Total Cost (Yearly): -
Efficiency Score & Recommendations: -
Overview & Methodology
This calculator estimates your home's energy consumption by summing the daily energy usage of all listed appliances:
$$ \text{Total kWh per month} = \sum \left( \frac{\text{Power (W)}}{1000} \times \text{Usage Hours per day} \times 30 \right) $$
The total cost is then computed as:
$$ \text{Cost} = \text{Total kWh per month} \times \text{Energy Rate (€/kWh)} $$
Additionally, the calculator uses your home size and optional ratings for insulation and window efficiency to provide an efficiency score and recommendations. For example, if your consumption per square meter is high or your insulation/window ratings are low, you might be advised to upgrade these areas.
Example
For instance, if you have a 100 m² home with the following appliances:
- Refrigerator: 150 W, 24 hours/day
- Air Conditioner: 2000 W, 4 hours/day
- LED TV: 100 W, 5 hours/day
And your local energy rate is €0.20/kWh, the calculator will compute your total monthly and yearly energy consumption, estimate your energy cost, and provide recommendations (e.g., "Consider upgrading insulation" if ratings are low).
Frequently Asked Questions
How is the energy consumption calculated?
Each appliance's daily consumption is calculated as (Power in kW × Usage Hours per day), and the monthly consumption is estimated by multiplying the daily consumption by 30.
What is a good efficiency score?
Efficiency is typically assessed by comparing the energy consumption per square meter to average benchmarks. Lower values indicate better efficiency. Recommendations will be provided based on your inputs.
How can I reduce my energy costs?
Consider upgrading insulation, replacing inefficient appliances, and reducing unnecessary energy usage.