In ,
terry wrote:

SNIP previously quoted stuff on power consumption of neon indicator lamps

Maybe OK in principle but ............ Problem is that based on $2,50
per month ($30.00 per year), if indeed it is that much? That just over
8 cents per-day is inconsequential in the overall cost of operating a
North American home. (Less than 1% of energy bill).

1% here, a fraction of a percent there and other places, half a percent
in a couple more, another % in each of a couple other places... That
often adds up to something significant.

Eight cents per day is here (NE Canada) about 8/10ths of 1000 watt
hours during one day, or the equivalent of leaving one 34 watt
fluorescent tube light fixture on all the time!.
Since we have a 9 'LED strip above our sink that uses ONE watt
(total), which we leave on all the time, it's hard to perceive 'All
the little indicator lights' adding up to anything significant!'
Also recall that after WWII, in the UK, neon 'night lights' became
available and my grandfather saying, with some delight, that he turned
off everything in the house except the night light and 'The meter
didn't even move'!

As posted here previously, mains voltage neons use a milliamp or two,
at 120 or 240 volts, LEDs probably less!

LEDs usually take more. Few get less than 2 mA, and 10 mA is typical.
Keep in mind that most indcator LEDs even now have chip chemistries that
were available in the mid to late 1970's. That is done ecause they cost
less than more efficient more modern ones.
With an average supply voltage that LED power comes from likely being
around 5 volts in consumer products other than power strips, along with
losses in the power supply, I would expect typical power consumption by
and associated with each LED glowing in the house to be ~.07 watt. What
if there's a lot of those?

However, I would worry more about wallwarts being plugged in all the
time and computers, monitors, TVs etc. drawing a few watts each when they
are plugged in but "off", and 4-7W incandescent nightlights that can be
replaced by 1/3-watt to 1-watt LED ones.

And since all/most electrical energy entering a home ends up as heat
within the house envelope anyway .................. !

Which in most places costs more per BTU than natural gas, fuel oil
and heat pumps do. And when it's not heating season, the electricity cost
does not offset anything. And when it's air conditioning season, the cost
is compounded.

--
- Don Klipstein )