Originally Posted by
badflaps
Have you priced an 8D batt. lately? Prolly need about ten.
Powerwall is about 10K installed in my area, problem is getting one as they are in short supply. There are other battery systems that are less money but not quite the performance. Nickel-iron is a good solution as long as you make sure to vent the area they are in well. Also cheaper but take up lots of space. If you have a basement or cellar they can do a great job with less cost. If you are building or remodeling an entire house and the budget is 5-600K it isn't a huge part of the total project. I would not do the roof and batteries as an add on to my current house. I would do the house as a complete energy efficient package. I just wish the power company would pay back at the same rate they charge. In my area it would only take me about four years to pay back, even the high cost of the powerwall.