LED wattage, energy consumption, and electricity cost guides.

Two bulbs can look identical on the shelf but cost very differently to run. Here's the real wattage gap. (

LED bulbs cost $2-$8 each, and one bulb saves $50-$100 over its life. See the real price by type and the 10-year cost versus incandescent.

Every light source wastes some electricity, even LEDs. The question is how much, and whether an old habit is costing you more than you think.

Worried about overloading a circuit with LED lights? You'd need well over a hundred to get close. Here's the number, and what actually trips it.

How hot do LED lights get? Bulbs run 100-150°F and strips 90-120°F, cool enough to touch. But a hidden inside temperature is what decides how long they last.

Discover the lowest watt LED light bulbs from 0.5W to 4W. Compare lumens, bases, and uses to pick the right energy-efficient bulb for any space.

A 10W LED bulb draws 0.083A at 120V, and LED strips draw 1-5A at 12V. Amps = Watts ÷ Volts. Chart included.

LED bulbs use only 7-10W to match a 60W incandescent and cost just $1.26 per year running 8 hours daily of use.