" wrote:

Would you consider, say, 2000 kwh? Would a single month's total
usage of 2000 kwh qualify a customer for a demand meter? Would
4 consecutive months of 2000 kwh be the line-in-the-sand for
putting a customer on a demand meter?

http://www.nationalgridus.com/niagar...lec-demand.pdf

Define "such small".

2000 kwh per month is "such small".

Anyone with a 100 amp, single-phase service that is using their
service at 50% for an entire month would tip the scale at a
4300 kwh bill.

And 4300 is more than 2 x 2000.

Hardly what I'd call justified for utilizing 50% of the
smallest installable utility service.

You wouldn't have demand metering with a 100A service.

Did you read the link?

A 100 amp service is 4 times what you need to draw 2000 kwh in a month.