Difference between Flood Light and Street Light

What is a Street Light and Floodlight?

Knowing the difference between the two is important for properly lighting any application. Before you can understand the difference, you must know what a beam pattern is. Beam angle or pattern is a measurement of the angles that are formed between a cone of light’s brightest point (the center) and the points on both sides of the center

where the light’s intensity is 50 percent as bright. A larger beam angle means a wider spread of light across an area and vice versa with small beam angles.

Beam Spread angle is broadly classified into three categories

  • Narrow Beam: when beam spread angle ≤ 20 degree
  • Medium Beam: when beam spread angle ranges from 20 degree to 40 degree
  • Wide beam: when beam spread angle ≥ 40 degree
FLOODLIGHT

(From left to right: LED landscape spotlight showing 15°, 30°, and 60° beam angles)

STREET LIGHT

Street Light

 Street light is a raised source of light on the edge of a road or path. It is a narrow beam light. That means, the street light is always aimed at a particular direction on the road surface.

Flood Light

Floodlight is a broad-beamed, high-intensity artificial light. As the name suggests, flood lights are used to flood an area with brightness. LED floodlights are highly energy efficient and have a higher lumen per watt output than any other.

(conventional lighting system)

What is the main difference between Flood Light Luminaire and Street Light Luminaire?

The main difference between the flood light and the other luminaire used in road lighting is that street light put off a narrow beam that is more appropriate to highlight a particular object or area. In contrast, Flood lights offer 120-degree illumination, making them the ideal choice to light up a broad area. Flood light covers the wide range surface of the aimed object like buildings, hording etc. Whereas road light luminaire cannot cover wide range of road surface area.

Why do we need good Flood Lighting?

Flood light illuminate uniformly in all directions and its exposure range can be adjusted. The broad beam of flood lights is used in a number of ways across many objects and areas.

Manufacturing Plants and Construction Sites Industrial units require high-intensity lighting systems for various processes. Most of these units run 24×7 which raises the need for optimum lighting even more.

Ports are another major area of application for flood lights. Such areas are open 24×7 which requires maximum illumination at night.

Façade Lighting Façade is among the most critical areas of a building. It is the front area of the building that faces the street. Different lighting techniques are incorporated using LED flood lights to highlight such areas. The primary purpose of this type of illumination using flood lights is to highlight principal façades such as the logo of a company.

Architectural Buildings and Monuments Architectural buildings and monuments boost an area’s worth. Some of these structures are a mark of a country’s pride and culture. Flood lights are used to illuminate these structures at night while enhancing their architectural splendor.

LED Flood light can place anywhere in scenes. It’s very common that flood lights in many different colors are used in long-distance scenes. Because flood light’s illumination area is relatively large, the lighting effect is very easy to predict.

Why do we need good Street Lighting?

Street lighting provides a number of important benefits. Street lighting is not actually aimed at showing the way directly ahead of the automobile; the car lights do that. But it does illuminate adjoining areas to alert drivers to the emergence of possible hazards from the side.  Street lights should also be effective in all weather conditions -fog, rain, and snow are all conditions that can degrade visibility.

Reduction in night Accidents, the root purpose of street lighting is to assist drivers, pedestrians, and cyclists in finding their way in the dark and improve road safety. Many neighborhood groups believe that extra illumination helps prevent crime, and business district lighting also may help create a mood or a pleasant environment.

Aid to police protection enhanced sense of personal security. To improve the effectiveness safety measures such as CCTV and Automatic Number Plate Recognition (ANPR) system.

Community Activity It can be used to promote security in urban areas and to increase the quality of life by artificially extending the hours in which it is light so that activity can take place.

street light

(A cross section of Urban Street showing arrangement Street Furniture and Light poles)

How much does it cost to install Flood Light?

Pricing ranges for flood lights are extremely broad, from as low as $5 to as high as $5,500 for 2,000-watt stadium lighting. For example, Philips SMD3030 50- and 100-watt LED Flood Lights averages around $23 and $40 respectively. Floodlight pole prices range from $80 to $200. For 100-watt LED Flood light pole average price around $140. The cost of installing an outdoor floodlight assembly starts at $85 for parts and labor, which contains multiple bulbs.

How much does it cost to install Street Light?

The installation cost of street lights varies depending on the type of lighting and power. If you install 100W LED equivalent street lights, you would need to spend at least $110 for the Street lamp. The estimated cost of a standard street light pole is US$2000 to US$3000, with electrician cost to put in street light to installation is up to $1000! The final cost of each street light is between approximately $5,000 and $8,000.

Comparison Between 100-watt Street Light vs. 100-watt Flood Lights:

Item Name Street Light Flood Light
Direction highlight a particular object or area illuminate uniformly in all directions and its exposure range can be adjusted.
Beam Angel Narrow Beam Broad Beam could be120 Degree
Lamp Cost $50-$85 $100-$125
Pole Cost $80-$200 $1000-$2000
Installation Cost $150-$250 $5000-$8000
Running Hour 6-8 hours 12 hours
Monthly Electricity Cost $2-$3 $3-$5
Yearly Maintenance Cost $50-$80 $150-$190
Lifespan LF>60,000 Hours 25000-80000 Hours
Color Rendering Index Ra>70 Ra>80
Color Temperature  Recommended 3000-4000K 2700-6500K

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