2002-07-13 The terawatt-hour is not an SI unit. There is only one SI energy unit, the joule. The terawatt-hour is a combination of an SI unit, the watt and the non-SI time unit, the hour.
The watt-hour is a unit accepted with limited use along with SI, but it in itself is not SI. John ----- Original Message ----- From: "M R" <[EMAIL PROTECTED]> To: "U.S. Metric Association" <[EMAIL PROTECTED]> Sent: Saturday, 2002-07-13 08:31 Subject: [USMA:21016] Fwd: Energy unit TWH > Hi Robert > > We receive our utility bills in kWh and it will be > easier to visualise the nation and world's energy > consumption in the same pattern. Also the output of > nuclear and hydro-electric power plants is expressed > only in TWh. Joule's may be good for purists, but for > a layman kWh & TWh is good enough. > > Afterall TWh is a SI unit, but not MTOE (million tons > oil equivalent). > > Madan > > --- [EMAIL PROTECTED] wrote: > > From: [EMAIL PROTECTED] > > Date: Fri, 12 Jul 2002 16:18:58 EDT > > Subject: [USMA:20994] Energy unit TWH > > To: "U.S. Metric Association" <[EMAIL PROTECTED]> > > > > 2002 July 12 > > Madan; > > In 20959 you tell Claire to give energy in > > units of TWH. > > > > This is wrong. The watt hour is allowed only for > > electricity. > > > > Energy is given in multiples of joule. > > > > Further, the symbol for hour is h, not H. > > > > Robert Bushnell > > > > > __________________________________________________ > Do You Yahoo!? > Yahoo! Autos - Get free new car price quotes > http://autos.yahoo.com >
