送交者: JZ 于 2005-8-08, 14:58:07:

回答: How much can it save each year assuming electricity or gas heats water now? 由 HunHunSheng 于 2005-8-08, 14:14:53:

I read it when it was published and found it by google.

http://query.nytimes.com/gst/fullpage.html?res=9802E2D61E3BF934A25753C1A9629C8B63

• This is Solar Electric System. - HunHunSheng (74 bytes) 2005-8-08, 15:07:07
  • that should be very cheap - i guess no more than $2-3000. - Enlighten (61 bytes) 2005-8-08, 15:09:56

加跟贴