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Do LED Lights Use Less Power?

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Incandescent bulbs are being phased out of the market leaving you with two options: LED and fluorescent lamps. How can you choose between these two? One of the main deciding factors is definitely power usage. So, do LED lights use less power?

Do LED Lights Use Less Power?

Yes, LED lights use less power because they are more energy-efficient than other lighting sources. They also have a semiconductor through which energy is filtered before releasing light. Due to this, light is produced from the source directly without powering separate filaments. 

However, you should bear in mind that LED light bulbs generate light in one direction while CFL lamps are omnidirectional. Moreover, LEDs minimize the risk of combustion and are cooler than incandescent lights.

LED light fixture

Why Do LEDs Use Less Power?

LEDs have a semiconductor that’s responsible for decreasing power bills. The semiconductor creates a small break also known as a junction in the circuit. The junction has one positively and one negatively charged plate.

The plates face each other, however, they do not touch one another. When attached to a circuit, power crosses the junction because of the positive/negative attraction. However, the plate that gets the power doesn’t allow power to continue along the circuit.

Note that light is the by-product of a circuit. Thus, for energy to be produced as light, it must be released. In other words, energy is utilized fully instead of powering other stuff to emit light. That’s why LED light lamps use less power compared to other conventional lighting sources. 

Do LED Lights Save Energy?

LEDs consume less power than incandescent lamps because diode light is energy-efficient compared to filament light. Moreover LED lights consume more than 75% less power than incandescent lamps. The difference is even greater at low energy levels.

For instance, bright LED flood lighting uses 11-12 wattages when producing a light output than a 50 wattage incandescent lamp. 

What Are Other Benefits of LEDs?

Turning to LED lamps for industrial or home lighting use can save you energy and money over time. Below are other advantages of switching to LED lamps:

Man wondering if LED lights use less power
  • Improved Safety: Unlike incandescent bulbs that convert more than 90% of energy into heat, LED lights emit no heat. This makes LED lights safe to use because they aren’t hot to the touch.
  • Environmentally-Friendly: LED lighting does not contain harmful substances like CFL bulbs. This means you can recycle them as part of your household waste.
  • Long Lifespan: LEDs are durable compared to traditional bulbs. The average LED lamp lasts 50,000-100,000 operating hours. This also means fewer maintenance costs and less frequent replacement. 
  • Small Size: LED lamps are adaptable to several lighting applications due to their small size. Some uses for LED include commercial and residential property lighting, as well as traffic signals lighting.
  • Operate on Low Voltage: This makes LEDs perfect for outdoor lighting where other lighting sources may not be suitable for oceanfront homes since the ground level is usually in a flooded area.

Fluorescent Bulb vs. LED Bulb

LED bulbs have electrical components that produce light when current passes through them. These bulbs are also created by grouping several LED bulbs together and then illuminating them via a diffuser. This results in better lighting than the one from incandescent lamps.


While fluorescent lights might seem cheaper than LED bulbs, they can be more cost-effective in the long run. Constant innovations and high demand has made the lamps affordable. One thing you need to keep in mind is that LED bulbs last longer than their fluorescent counterparts.

Light Output

Fluorescent/CFL bulbs illuminate light at different angles because they are omnidirectional. They also distribute bright light evenly in a room. Their LED lamp counterparts produce light in a certain direction since they are a directional light source. 

This makes them ideal for car lights and floodlights. However, modern LED lighting can distribute light evenly while being a directional source of light. That said, a 150 wattage incandescent bulb can produce 2600 ml lumens (the brightness of a bulb).

Thus, the lesser the wattage, the lower the lumens. So the brightness of both compact fluorescent and LED lamps varies. However, the wattage required to produce the same lumens is different for CFL, incandescent, and LED lamps.

How Much Power Do CFL and LED Bulbs Use?

The amount of energy required by both LED and CFL lamps is different. So which is better? We can determine this using two ways. First, let’s find out how much lumens a lamp can generate if assigned a specific number of wattage

Person holding string lights

Now, assuming you want to use 30W lamps, the CFL lighting will produce 1901 lumens, and the LED one will generate 2238 lumens. This means CFL provides 63.3 lumens per wattage while LED provides 74 lumens per wattage. So LED lamps are more efficient. 

When it comes to color temperature, both CFL and LED lamps are available in different ranges. So your preferred color temperature will depend on the mood you want in your home. 

Which Bulb Is More Efficient?

A bulb’s efficiency is determined by its output ratio (a number that shows the amount of light that’s lost inside the bulb) and lumen per wattage. Since CFL lamps offer omnidirectional light, some of the light is pointed up towards the ceiling, and some bounces down. 

So there’s some loss of light. On the other hand, LEDs have a higher output ratio because they are directional. So they shine downwards in one direction only. This means LED lamps are more efficient than CFL lamps

Related Questions

Before we finish this article, let’s address a couple of more questions on the topic.

Why LED Lights Consume Less Power?

LED lights consume less power because they have a semiconductor that filters electrical energy. In turn, this makes LED lights use less power than other lighting sources. 

Do LED Lights Really Save Energy?

Yes, LED lights save energy because they consume less energy compared to incandescent lamps. This is because diode light is more efficient than filament light. 


LED bulbs provide better light quality than other lighting sources. They also use less power to run and are durable, which means fewer replacements. If you are considering replacing the bulbs in your home, try LED lights.