ELECTRICISTABCN
Free tool

LED lighting savings calculator

Compare your current lighting with an LED alternative using the actual lamp wattages and operating hours. We do not use preset prices or savings percentages.

units
W
W
h/day
days
€/kWh

Check the watts (W) on the lamp or packaging. To estimate euros, use the total price per kWh shown on your bill; we do not fill it in for you.

How LED lighting savings are calculated

The tool compares the annual energy used by your current fittings and the proposed LEDs. The result depends on the number of points, their wattage and the actual time they remain on.

Transparent formula

Annual consumption (kWh) = light points × watts per point ÷ 1,000 × hours per day × days per year. The saving is the difference between both consumptions.

Indicative estimate. It excludes driver or ballast use, installation losses, tariff changes and variations in use. The actual result depends on the fittings and the installation.

Questions about the LED savings calculation

Does the calculator use a preset electricity price?

No. The €/kWh field is optional, and a financial saving is only calculated if you enter the price from your own bill. Without it, we show the energy saving in kWh.

Where can I find a lamp or fitting's wattage?

It is usually printed on the lamp, tube, spotlight, driver or packaging. If you cannot access it, an electrician can inspect the installation and suitable equivalents.

Does the result include the cost of installing LED lights?

No. The tool calculates energy use and savings, not the cost of materials or installation. That depends on the number and type of fittings and the state of the installation.

Does it work for homes, businesses and residential communities?

Yes. The formula is the same; enter the number and average wattage of the points you want to compare and their actual operating hours.

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From estimate to project

Turn the estimate into a real LED lighting quote

The calculator compares energy use, but it does not replace an inspection of fittings, drivers, dimming, panels and installation conditions. The company reviews the case and confirms the scope before work starts.

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  • Authorised electrical company
  • The company installs with its own technicians and no subcontractors
  • Clear price before work starts
  • Free written quote with no obligation

Home

Light replacement, downlights, dimming and room-by-room design.

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Shop, office or warehouse

Task lighting, displays, circulation areas and lighting projects for businesses.

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Residential community

Common areas, garages, timers and replacement of existing fittings.

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We cover Barcelona, Barcelonès, Baix Llobregat, Vallès Occidental, Vallès Oriental and Maresme.

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