Hi Mark,

I believe the largest general service, medium screw (E26) base
incandescent available today is the 300-watt PS30. Beyond that, you
would be looking at a larger, mogul or E39 base.

There are a growing number of increasingly higher wattage CFLs coming
to market (e.g., 200-watts) but they're both big and expensive.

How big you ask? This page should give you a pretty good idea:

See:
http://lightingresearch.org/programs...L/abstract.asp

How much? Well, this one retails for $78.46 so be careful not to drop
it.

See:
http://www.1000bulbs.com/products.ph...t-Fluorescents

Note, however, this CFL has a mogul base and its light output is (we
presume) considerably more than the 1,200 lumens stated.

The medium base 55-watt CFL noted below claims to offer the same
amount of light as a 250-watt incandescent, but that doesn't seem to
be the case. A Sylvania 200-watt A21 incandescent produces 3,880
lumens or 380 lumens more than what is listed here.

See:
http://www.fullspectrumsolutions.com...ct_68_prd1.htm

Cheers,
Paul

On Tue, 09 Jan 2007 08:57:24 -0600, wrote:

What is the highest wattage incandescent bulbs made, that will fit a
standard socket? Normally the highest I see in most stores is 150W.
But I used to work at a school and they had 300W bulbs in their lobby
fixtures. I seem to recall seeing 500W bulbs when I was a kid in the
60s. But it seems to me they may have had larger bases.

I am asking this because I just want to know, but also because I am
wondering how high the compact florescents will go. I just saw a CF
bulb that claims to be equivalent to 150W but uses 42w.

Mark