How many watts efficient is LED?
According to the U.S. Department of Energy, LED light bulbs use at least 75 percent less energy than incandescent bulbs. A typical LED light bulb uses about 10 watts, according to EnergySage, compared to about 60 watts for most incandescent bulbs.
Depending on the bulb and the manufacturer, LED technology typically produces 75-110 lumens/watt. So, LEDs are generally about 7 times more efficient at producing light than incandescent bulbs. Use a 7:1 ratio as a rough guide when selecting an LED bulb to replace an incandescent bulb.
LEDs use up to 90% less energy and last up to 25 times longer than traditional incandescent bulbs.
LED | Incandescent | |
---|---|---|
Daily cost* | $0.005 | $0.03 |
Annual cost* | $1.83 | $10.95 |
Cost for 50k hours @ $0.10 kWh | $50 | $300 |
Bulbs needed for 50k hours | 5 | 50 |
For example, a 60-watt incandescent light bulb gives approximately 800 lumens; therefore, to replace a 60-watt incandescent bulb with a LED bulb of the same brightness, one should purchase a LED bulb that also gives 800 lumens. A 60-watt incandescent light bulb can be replaced with a 10-watt LED. E.
As a result, you can use an LED bulb of a greater equivalent, such as a 100-watt equivalent, as long as it doesn't exceed the 60-watt energy consumption limit. The energy consumption of an LED to an incandescent bulb is about 6:1. An LED bulb consumes about 90% less energy than an incandescent bulb.
Because diode light is more power efficient than filament light, LEDs use less energy than incandescent bulbs. More than seventy-five percent less energy is consumed by LED lights compared to incandescent bulbs. The discrepancy is considerably more pronounced at low power levels.
Top Performance LEDs: These LEDs have the highest luminous efficacy, around 220 lm/w. Examples include the Nichia 757G LEDs. High Performance LEDs: These LEDs offer good performance with a luminous efficacy of 150-200 lm/w. Many reputable manufacturers produce LEDs in this category.
Energy Efficiency with LED Bulbs
That is because these bulbs produce a majority of their energy as heat, not light. LEDs are better, on the other hand, in producing very little heat in order to light your home. As a result, the energy they consume is primarily devoted to their intended purpose: lighting, not heating.
Do LEDs save energy? LEDs use much less energy than incandescent bulbs because diode light is much more efficient, power-wise, than filament light. LED bulbs use more than 75% less energy than incandescent lighting. At low power levels, the difference is even larger.
Is it cheaper to leave LED lights on all the time?
Now, while you shouldn't leave all your lights on all day, it's not going to cost much if you have a more efficient bulb. The largest savings come from switching to LED bulbs, using nearly 5 times less energy for the same brightness.
Energy Savings: Since LEDs use much less electricity while still being able to produce the light you need, these lights also save you money in the long run. Compared to conventional incandescent lighting or fluorescent lighting, they will use a lot less electricity.

Brightness (in Lumens) | Watts | Cost / hr* |
---|---|---|
650 – 850 | 13 – 18W | 0.2¢ |
1000 – 1400 | 18 – 22W | 0.26¢ |
1450 - 1700+ | 23 – 30W | 0.34¢ |
2700+ | 30 – 55W | 0.55¢ |
And here's the Philips 60W replacement LED compared with the Philips 100W replacement LED. With 1,680 lumens from the 100W, the difference in brightness is much more noticeable.
Many fixtures contain a warning not to use anything higher than a 60-watt bulb because the fixture can't take the heat higher wattage bulbs generate, and it would therefore be a safety hazard.
Putting a 100-watt bulb in a 60-watt fixture could cause intense heat, melting the light socket and the insulation on the fixture's wires. Any time you have that kind of damage on wires, you're at a big risk for arc faults, where an electrical current falls off its intended path— a leading cause of home fires.
Using a light bulb with too high of wattage can lead to overheating of the light bulb. This heat can melt the light socket as well as the insulation of the wires. Once that happens, you put yourself at risk of arc faults, and this is something that could even lead to property fires.
Unlike incandescent light bulbs, LEDs don't produce light using heat. This is part of what makes them so energy efficient. The downside is that their components can be sensitive to overheating, which can cause them to burn out prematurely.
The short answer is that LED lights can be left on all night without risk. LED lights are made to run constantly for a long time without overheating or causing any safety risks.
- Heating and cooling: 45-50% The largest electricity consumer in the average household is your heating and cooling appliance. ...
- Water heater: 12% ...
- Lighting: 9-12% ...
- Refrigerator: 8% ...
- Washer and dryer: 5% ...
- Electric oven: 3% ...
- Dishwasher: 2% ...
- TV and cable box: 2%
Are LEDs energy-efficient?
There are two main types of energy-efficient light bulbs available: compact fluorescent lamps (CFLs) and light emitting diodes (LEDs). LEDs are the most common and adaptable light fitting, and are suitable for replacing dimmable lights and spotlights. LEDs are also more energy-efficient than CFLs.
LEDs are the most efficient form of lighting
LEDs use much less energy to provide the same amount of light as other forms of lighting. One of the main reasons LEDs are so efficient is that most of their energy is used to solely create light, rather than creating light and heat, as less efficient forms of lighting do.
LEDs, however, do not contain a filament and instead illuminate using a semiconductor. So instead of just instantly burning out like traditional bulbs, LED lights age over time and progressively get dimmer until they stop working altogether. This is what we call “lumen degradation” or “LED degradation”.
Using up to 90% less energy than conventional halogen bulbs, LEDs are the best value lighting solution, saving energy and dramatically reducing your lighting bills.
According to their calculations, as the voltage is halved, the input power is decreased by a factor of 4, while the emitted light power scales linearly with voltage so that it's also only halved. In other words, an LED's efficiency increases as its output power decreases.
LED bulbs are the most efficient light bulbs available, using just a tenth of the energy of an incandescent bulb. For the best LED light bulbs, we recommend Sylvania's LED Light Bulbs.
Because manufacturers are discontinuing more and more CFLs, we typically guide customers towards LED replacement products. LEDs use less energy and offer more directional light, which is great for applications where CFLs are common, like recessed cans.
XED or Xenon Energy Saving Discharge Lamps are superior to the most popular LED or Light Emitting Diodes in many ways. XED lights are better in terms of spectral contents, power consumption as well as total running life hours. They produce less glares and are clearer under foggy weather.
LED lights are unlikely to start a fire. The bulbs don't get hot enough to ignite anything. The biggest risks are faulty wiring or overloaded circuits. This is often caused by the way they are installed, rather than an issue with the light itself.
In the end, taking into consideration the lighting levels and Lumens over the Wattage of the lamp will provide a more energy efficient lighting system. Higher Lumen and lower Wattage lamps, especially with LEDs, will provide the best lighting with the lowest energy costs.
How much electricity does a 10 watt LED bulb use per hour?
With a more energy efficiency LED light bulb (averaging 10 W), here's what your energy usage could look like: Using an LED light bulb for 1 hour per day results in 0.07 kilowatt-hours (kWh) of electricity per week, 0.30 kWh per month, and 3.65 kWh per year.
The 300w LED light is a special light when it comes to AMP utilization. The consumption rate is only 2.4amps on 120volt or 1.2 on 240volts ac.
Halogen Light Bulb Wattage | LED Equivalent Wattage |
---|---|
75 Watt | 11 Watt |
60 Watt | 8 Watt |
50 Watt | 6 Watt |
30 Watt | 4 Watt |
Top performance LED | High Performance LED | Good Performance LED |
---|---|---|
220 lm/W | 150-200 lm/W | 100-149 lm/W |
But there's no problem using a 100-watt equivalent LED bulb, which is only about 17 watts and therefore well under the safety limit of a 60-watt maximum fixture.
The annual running cost of LED bulbs is cheaper than competitor CFL and incandescent bulbs. Taking factors such as purchase cost, lifespan, and running costs (in terms of electricity consumption) into consideration, LEDs outperform CFL bulbs by 12% and incandescent bulbs by 74%.
At 30c/kwh this will cost 0.05 x 30 = $0.015 per hour. In comparison to run a 4.8w LED downlight for 1 hour will consume 4.8/1000 = 0.0048 kwh. At 30c/kwh this will cost 0.0048 x 30 = $0.0014 per hour.
Brightness (in Lumens) | Watts | Cost / hr* |
---|---|---|
650 – 850 | 60W | 0.78¢ |
1000 – 1400 | 75W | 0.97¢ |
1450 - 1700+ | 100W | 1.3¢ |
2700+ | 150W | 1.95¢ |
Cost in Dollars of Energy Usage
If you leave a 100W bulb on for 10 hours a day, you will consume 1 kWh per day, which will cost you $0.12. If you do this every day for a month, you will have consumed 30 kWh of electricity, which will cost you $3.60 per month.
Providing your plants with enough light can become an issue if you want to grow more than one. For example, one single 300W LED light fixture may be fine for one or maybe two plants, but it may not be enough to cover a bigger space with multiple plants.
Can I use a 15 watt LED bulb in a 60w fixture?
The answer: generally, yes, it is safe as long as the actual wattage of the LED bulb is within the limits of the socket or fixture.
7 Watt (60 Watt Equivalent) C13 LED Light Bulb.
Forget Watts — Think Lumens
Wattage equivalents, usually on the front of the package, are only meant to get you in the ballpark. If you're replacing a 100-watt incandescent bulb, you'll want an LED that produces about 1,600 lumens. A replacement for a 40-watt incandescent bulb should produce about 450 lumens.