How much for an off grid system ?

[Wy_White_Wolf]

DOD - Depth of Discharge.

My experience puts the cost of off-grid with batteries between $2500 to $3K per KWH used daily. With @1/3 of that cost reoccurring every 5 years to replace the batteries. So if 12KWH a day then $30K to $36K with $10k to $12k reoccurring.

Don't go by 1 months bill though. You need to look at worst case so need a years worth of bills to tell which is your worst.

WWW

[CracklePop]

To: Wy_White_Wolf
Looks like my highest monthly usage was 470 KWH (probably the furnace motor). My average is about 370.

[Sunking]

Huge amount of embarrassment here. My wife had the electric bill tucked away and IT SAYS (Drumroll) "kWh used 310".

OK that is 10 Kwh per day and would be a huge off-grid system. You are talking a 3000 pound $7500 battery every few years.

[J.P.M.]

OK that is 10 Kwh per day and would be a huge off-grid system. You are talking a 3000 pound $7500 battery every few years.

And that's only for the batteries !

[CracklePop]

OK that is 10 Kwh per day and would be a huge off-grid system. You are talking a 3000 pound $7500 battery every few years.

I've made some mistakes here. My electric company emailed my usage to me and it comes out to about 370 kwh per month. Next: I'm sure a 3000 pound (did you mean 300 ?) battery would last a long time but I couldn't lift it. I'd prefer some smaller batteries a friend could help me with. Dekas are good, but I'm open to recommendations. BTW, I could cut down my electrical needs by getting a gas fridge and LED lighting.

[Sunking]

[COLOR=#000080]I've made some mistakes here. My electric company emailed my usage to me and it comes out to about 370 kwh per month.

OK that is 370 Kwh pe rmonth / 30 days = 12.33 Kwh per day requiring even a larger battery

Next: I'm sure a 3000 pound (did you mean 300 ?) battery would last a long time but I couldn't lift it.

No I meant 3000 pounds total at 10 Kwh per day. Now we are talking 4400 pounds you replace every 5 years. You are talking 48 volts @ 1250 AH. You would use 4-volt batteries like a Trojan SIND_4_1685. It would require 12 batteries wired in series and each cell weighs 367 pounds.

Each cell will cost roughly $1000 x 12 cells. Sop be careful what you ask for because what you are asking for is roughly a 500% electric rate increase just in battery cost alone. It will require a 4000 watt system. So you are lookin gat $20,000 plus to go off grid, and $12,000 every 5 years to replace battery if they do not go up, but they will go up.