Calculate the savings and payback period of your energy renovation.
The Energy Saving Calculator calculates the annual savings and payback time of various energy-saving measures. The calculator compares the cost-effectiveness of additional insulation, window replacement, LED lights, and equipment purchases.
The calculator is free, works in the browser, and does not require registration. The site has over 200 calculators with 2026 data.
Savings/hour = Current consumption × Savings percentage × Energy price. Payback = Investment ÷ Savings/hour
Fill in your information in the fields and press the calculate button – the result will appear immediately. Try different values to compare different options.
LED conversion: 20 bulbs 60 W → 9 W, 5 h/day → savings 3,650 kWh/year × $0.18/kWh = $657/year. Purchase $200 → payback 0.3 years.
Enter your own information into the calculator to get a personalized result. The calculator is suitable for both quick comparisons and more detailed planning.
The calculator is designed for individuals, entrepreneurs, and professionals. All calculators on the site are free of charge.
For important financial or legal decisions, we recommend verifying the figures with official sources or an expert.
Calculate the savings and payback period of an energy renovation. Fill in the requested information in the form, and the energy savings calculator will show the result instantly.
Yes, the energy saving calculator is completely free and does not require registration. All FiksuLaskuri construction and home calculators are free of charge.
No. The calculations are done entirely in your browser and the data you enter is not sent or stored on the server.
The energy saving calculator provides a good starting point for purchases, often with a small margin of error. For larger projects, it is advisable to request an accurate measurement and quote from a professional.
Yes – at the bottom of the page, you can see other calculators related to the same topic that may also interest you.