Explanation: Nice idea but I think you can do far better!
Links to help out your link.
www.rpc.com.au/products/batteries/deepcycle_faq.html
en.wikipedia.org/wiki/Deep_cycle_battery
These are the problems I have with those systems.
1] Solar PV cells...massive $$ outlay and with their lifetime [about 15yrs] and low effeciency [15% at best] and so your basically buying your electricity for years upfront and those panels are toxic and hard to recycle.
2] deep cycle lead batteries also need topping up with acid occasionally and thats gonna cost!
And here is what I propose...I suggest a solar to steam system as polished metal and glass mirrors dont degrade and and nor does the plastic or glass tubing! It could last 1000's of years with proper maintanence! steam for heating and driving a turbine for power extraction [electrical or mechanical]...hot waters uses are obvious! so how to store this heat energy long term with low impact to all. I would install a massive hi pressure air tank underground and pre-pressurize it to 3/4 full before connecting it to the energy generation system and I would utilize the steam created electrical or mechanical energy to drive a compressor connected to the tank....sun heats water which turns to steam which drives a turbine which compresses the air in the tank and the compressed air in tank stores this "solar" energy for later use...the expanding air released can be used for refrigeration and airconditioning and to also to create electrical or mechanical energy by driving a turbine.
Personal Disclosure: I wanted to be an architect and this is the best system IMO and can of course be suplimented by PVC and Wind power etc.
I hope that helps!
P.S. I did the maths and it comes out to 1.5Kwatts.hr of energy required 24/7 for 28days straight. Is that actually going to be enuff energy for your maximum requirements?
Edited spelling and TMI.
Edited 5mins later to add that maybe many smaller high pressure tanks would be better as that way the pressure wouldn't drop off so much and you just have a mechanical switching system based on pressure or lack of it to switch between the low pessure and high pressure tanks to maintain the pressure to the system.!
Edited to change 1.5kw/hr to 1.5kw.hr
my science teachers would have me excrutiated for that back in school. me such a 
[edit on 15-9-2009 by OmegaLogos]
[edit on 15-9-2009 by OmegaLogos]
[edit on 15-9-2009 by OmegaLogos]
