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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B>
greenbuilding-bounces@lists.bioenergylists.org
[mailto:greenbuilding-bounces@lists.bioenergylists.org]<B>On Behalf Of
</B>Reuben Deumling<BR></FONT></DIV>
<DIV class=gmail_quote><FONT face=Arial color=#0000ff size=2></FONT>
<DIV><BR>With tank water heaters that are always 'plugged in' and controlled
by a thermostat the only way I can see a TOU tariff having an effect on demand
is if <BR><SPAN class=046320023-01012012><FONT face=Arial color=#0000ff
size=2> </FONT></SPAN></DIV>
<DIV><SPAN class=046320023-01012012> </SPAN>(b) some kind of switching
were used to cycle the DHW off for periods of peak usage. <BR><SPAN
class=046320023-01012012><FONT face=Arial color=#0000ff
size=2> </FONT></SPAN></DIV>
<DIV><SPAN class=046320023-01012012><FONT face=Arial color=#0000ff
size=2>That's what happens. You get the one with the other. And just to
make sure, if you wanted off-peak rates, you had to have electric water
heating, and there was a minimum size, water heater. </FONT></SPAN></DIV>
<DIV><SPAN class=046320023-01012012><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=046320023-01012012><FONT face=Arial color=#0000ff size=2>Now
that we have smart metering available, it is available to all, and
any water heater can take advantage of cheap rates. We first got the advantage
with an instant electric because we shower late at night. We now use
an 80 litre storage with a timer. This tank would not have been allowed
on the old system. </FONT> <FONT face=Arial color=#0000ff size=2>The
incentive for us to change was that we have a grey water heat exchanger and
the storage heater enabled us to use it all year round.</FONT></SPAN></DIV>
<DIV><SPAN class=046320023-01012012><BR>
<P><FONT size=2>Nick Pyner<BR><BR>Dee Why NSW
</FONT></P> </SPAN></DIV></DIV></BLOCKQUOTE></BODY></HTML>