Dear John,

The unit kilojoule and its symbol kJ are in my opinion the best choice for
buying and selling energy.

When you buy gas you are actually buying the energy it contains. For this
reason the most appropriate unit to measure its energy is the SI unit,
joule.

As a joule is quite small (approximately the amount of energy produced when
you burn a single match) it is usual to buy and sell energy in kilojoules,
megajoules, gigajoules, and even petajoules.

If other forms of energy � say electrical energy � was also supplied in
joules (instead of the arcane kWh), you could readily compare the different
forms of energy with the different work that they do for you.

Cheers,

Pat Naughtin LCAMS
Geelong, Australia
-- 

on 2004-05-18 10.20, john mercer at [EMAIL PROTECTED] wrote:

> Hello we got are gas bill last week for the month of april.  It was calibrated
> in kj.  Is that the correct SI way to do it or should it be in cubic meters?
> I believe natural gas meters went metric in the late seventy's in British
> Columbia.  I don't know anything about the rest of Canada maybe if there is
> anyone on this list who could let us know.
> 

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