On Sun, 10 Feb 2008 22:10:33 -0700, Donna Ohl, Grady Volunteer Coordinator
wrote:
A lot of what people said is right but a lot is wrong.
It's so hard to separate the wheat from the chaff.

Nobody mentioned the payback calculation yet.
I'm trying to run the calculations in the invaluable Dec. 2007 document
http://www.gamanet.org/gama/inforesources.nsf/vAttachmentLaunch/C2AAFB8D41D003F485256E9000607F66/$FILE/12-07-gas-rwh.pdf

Given current PG&E cost per therm in my area
http://www.pge.com/tariffs/GRS.SHTML#GRS
of between $1.21 to $1.44 per therm
http://www.pge.com/tariffs/pdf/G-1.pdf

For those calculations, does an average cost per therm in my area of $1.33
seem reasonable to you?

Donna