To estimate the cost of using a sign, its width is not enough. You need to know its electrical power and the duration for which it remains lit. The price of electricity then comes into play in the calculation. This guide presents a simple method with a clearly identified fictitious example, then explains what data to request to obtain an estimate related to your own installation.
Start with the power actually used
Consumption depends on the power absorbed by the assembly and the lighting duration. The maximum power indicated on a power supply shows its capacity; it does not necessarily represent what the sign consumes when operating.
For a reliable estimate, use documented data for the complete configuration or a measurement taken under safe conditions by a competent person. An animation or a variation in intensity can change consumption over time.
Calculate energy in kilowatt-hours
The calculation is as follows: power in watts, divided by 1,000, multiplied by the number of hours of use. Let's take a fictitious example: a sign consuming 100 W and used six hours a day consumes 0.6 kWh per day. Over thirty identical days, this represents 18 kWh.
These values are only used to illustrate the method. They do not describe the usual consumption of all signs, nor that of a specific model offered by LesEnseignes.be.
Estimate the cost with your own tariff
To obtain an energy cost, multiply the calculated kWh by the applicable kWh price in your contract. With a fictitious tariff of 0.30 euro per kWh, the 18 kWh in the example represent 5.40 euros. This tariff is not an estimate of the current electricity price in Belgium.
The result corresponds to the calculation based on the chosen tariff. It does not constitute a complete simulation of your bill and does not allocate any fixed costs in your contract.
Also work on schedules
A sign does not necessarily need the same lighting time every day. Opening hours, the visibility of the location, and the applicable conditions at the site must be taken into account to define its operation.
A time control or a compatible variation can be considered. The setting must maintain the role of the sign and correspond to the installation; it is not advisable to promise the same percentage of savings for all businesses.
Frequently asked questions
Does a 200 W power supply mean 200 W consumption?
Not necessarily. This marking may indicate its maximum capacity. You need to know the power actually absorbed by the configuration in operation.
What if the schedules change depending on the day?
Calculate the different durations separately, then add up the consumptions. For example, opening days and closed days can form two distinct groups.
Let's talk about your project
Do you have an LED sign project? Present your idea, dimensions, and planned location to LesEnseignes.be. These elements will help us start studying a solution adapted to your business.