LED neon advertising can be categorized as very energy-efficient. Most of the electrical energy is directly used for light generation, so in addition to the power consumption, the heat generation is relatively low, unlike, for example, conventional light bulbs.
LED neon flex has a voltage of 12 or 24 volts and a service life of more than 50,000 hours. LED-based products usually require only one transformer (power supply unit).
Fortunately, to calculate the power consumption of a LED neon sign is not very complicated, so you do not need a degree in mathematics or engineering. You just need the following parameters: the power in watts (W), the total length of the LED tubes used in meters (m), and the operating time in hours (h).
First of all, it makes sense to calculate the energy consumption per hour, in order to be able to extrapolate to larger periods of time afterwards. LED neon has an average power consumption of about 9 watts per meter (W/m).
A logo or lettering with a total tube length of 5 meters thus consumes 45 watts per hour: 9W/m x 5m x 1h = 45 W/h or 0.045 kWh (kilowatt hours).
If you now want to extrapolate the power consumption to the month or the year, it is relevant for how long the LED neon sign is turned on during the day. Let's assume that the hypothetical illuminated logo is in operation for eight hours per day: