What is the most economical way to transition to LED ?
This blog posting provides more detailed explanation why Professor PawPower recommends changing to LED in a frequently used socket as soon as a bulb burns out and saving any
existing stock of incandescent or CFL bulbs for sockets that are used less frequently. The suggested cutoff for “less frequently” is “less than an hour a day” on average.
LED bulbs are of course more energy efficient than incandescent
or CFL ( compact fluorescent) bulbs.
But they also cost more.
Naturally the more often and longer time a socket is used the faster is the payback for the more expensive bulb.
The main reason to change to LED is that they are more
energy efficient, of course.
First we will take a look at just how much more economical LED bulbs are relative to CFL and incandescent.
The benefit we receive from any bulb is light output for a given period of time. There are two cost elements:
the cost of the bulb itself (an investment) and the cost of operating the bulb ( cost of electricity to provide the light output).
We will calculate both cost elements for 1million lumen hours, which is just a little more than the benefit we receive
from operating a regular 60W incandescent bulb over its lifetime. ( A 60 W standard incandescent bulb provides 860lumens light output for 1000 hours, so total 860,000 lumen hours.)
While many of the parameters may differ in any given situation, these
are typical values.