But still. Whats the ROI on that system? Are you able to buy off peak power to offset the cost of the wall? If so how long would it take to recoup? Or for that matter, disconnect from the grid and just not pay because you are now solar/wind/generator*.
*Ive heard (not sure if its true) that at least here in IN the cost of electricity per KWH is still cheaper than most generators can create per gallon of gas. Though if prices stay below $2 it could help.
Costs are much better than a few years ago for my two homes at my place.
28kw system
70 -400 watt modules on a ground mounts
24 kw inverters. 6kw x 4
2 - 13.5 kw Tesla power wall batteries
$77,900 before tax credits
Generator hookup, but no generator included
Anyone work with powerwalls?
Would that allow you to completely disconnect from the electrical grid?
I could probably do it as well if I wait a few years times 2. Lol if the cost dropped 30k each time
I think my average electricity is about $130. Would take me about 50 years to break even. I probably won't live that long or be in my current home. Am I looking at it the right way or am I missing something. I would definitely love the independence from the grid.
That is a huge system that would allow for complete grid independence without any kind of sacrifice (except maybe money).
A few things:
5. Once a system is bought, power costs are locked in. When you buy from the utility you are at the whim of their pricing and what they can convince the politicos to make the utility regulatory commission to allow them to charge you. One thing is sure, that cost will not go down, and when they decide they want to jack your rates to pay for their failed Mr. Fusion plant you get to pay for it.
Forgive my ignorance and off-topic question, but I only paid a passing interest in this type of system when it was first announced, and haven't paid much interest since.
As I understand it now, the power wall is intended to be used with solar to power your house and store excess energy. Is it possible to use the power wall another way?
Could you, for instance, charge the battery bank off of your electrical service, and keep it topped off with a trickle charge when necessary, then switch to the battery backup for short-term outages? Of course, I mean using a switch that severs the connection to the grid so the guy repairing the grid doesn't get zapped.
Dont get me started on that point.
"Hey everybody! We need to save the planet (and your wallet) by reducing energy consumption. Here, have these cancer bulbs and you'll cut your consumption by 25%!"
(several years later)
"Dear IURC: We are selling 25% less power than we used to and are now not making enough to cover our costs. We need to raise the rates to recoup our losses."
The same thing with natural gas prices. When everyone went High Eff. gas fired units consumption went down tremendously. Then the prices were jacked up to make up the diff.