top of page
  • Italtower Team

How much light!

Updated: May 16, 2023

How much they illuminate

To learn more about the lighting power of our lighting towers, continue reading this article.

The main function of our towers is to illuminate, especially large areas, and the larger the area to be illuminated, the greater the power of the headlights must be.

Thanks to the advent of LED technology, energy savings are significantly higher than with old, traditional lighting systems. In fact, we have moved from using metal halides to using LED lights. Metal halide lights have not been used by our company for many years, the reason is that LED lights have a longer lifetime with better energy efficiency, but above all they require less maintenance. In fact, they do not require any replacement of exhausted lamps, they have immediate ignition, no waiting for cooling after switching off and switching on again.

Just consider that one led bulb with a power consumption of 7 watts produces the same light as a halogen bulb with a power consumption of 50 watts. The new challenge is to decrease the watt consumption and increase the lumen output. In fact, the best savings are achieved with the lowest number of watts consumed and the highest number of lumens produced.

Lux or lumens?

Watts are often mistakenly used to measure the luminous efficiency of lighting devices. To measure the luminous efficiency, you need to know how many lumens the built-in bulb emits.

Often to refer to the power of light, it is done in terms of lux, but lux expresses the amount of light of 1 lumen on 1 square metre of surface, whereas lumen is limited to a spherical projection of light around the lamp (1 lux = 1 lumen in 1 square metre).

What is Lumen or Luminous Flux?

Lumen (symbol: lm) is the International System of Units to measure luminous flux, it measures the total amount of light visible to the human eye emitted by the LED bulb. The higher the lumen, the more light will be emitted by the lamp in correspondence with the watts absorbed.

The watt (W), on the other hand, is the unit of measurement of the power and more specifically of the consumption that the lamp needs in order to operate correctly, emitting all the lumens necessary to illuminate the area.

Finally, the voltage of the bulbs is the supply voltage required for correct operation. Usually lamps use 230-250V current, but there are also LED strips or bulbs that need 12V or 24V for hazardous applications where low voltage is required.

As concerns low voltage, some of our light towers have 48V voltage to avoid accidents as safety comes first.

Illuminated area

To explain in the simplest terms how much light a lighting tower can provide, think of a football pitch. A lighting tower, such as the ASTRID PRO model, can illuminate half a football pitch. However, the illuminated area varies depending on the headlights. We offer different headlight arrangements depending on the model of the lighting tower, including: 4x75, 4x160, 4x320, 6x160 and 6x320.

The table below summarises the headlights, their lumens and the illuminated area.



lluminated area

4x75 W LED

36900 lm

1500 mq

4x160 W LED

81400 lm

2400 mq

4x320 W LED

1662200 lm

5000 mq

6x160 W LED

122100 lm

4200 mq

6x320 W LED

249200 lm

7800 mq

Comparison tables

Table comparing lumens and watts for small indoor lighting:


Halogen lamps


200-300 lm

20 watt

4 watt

400-500 lm

35 watt

5 watt

600-800 lm

50 watt

8 watt

900-1000 lm

70 watt

10-12 watt


1-3 anni

15-25 watt

Energy saving (%)



Table comparing lumens and watts for outdoor or commercial area lighting:


Halogen lamps


1200-2000 lumen

120 watt

14-20 watt

3000-4000 lumen

300 watt

25-30 watt

5000-6000 lumen

400 watt

40-50 watt


1-3 anni

15-25 watt

Energy saving (%)