Regulations for batteries for home use?

[Tesla2Go]

I'm seriously thinking of starting a solar panel business, installations. I'd like to get an idea of what kind of regulations there are for how much electricity one can store in a private residence? When do you think you would begin to need special permissions? Say if you want to install a battery system in your home that holds 50kW of electricity?

[doug]

Not much sense in using batteries if you're in a place where you are connected to the electrical grid, especially if you have a time of use meter.* You can sell your excess power generation to the utility during the day at peak hours (when you're probably not even home).* Then in the evening you're home (and when your solar panels aren't working), you use power off the grid at roughly half the price you sold it to them.

<Edit typo: have-->half>

[Michael]

Being able to store energy at home seems to be a good way to be able to have electical back up in case of power outage at times when solar is also not available or limited. Having the ability to plug a vehicle into the homes electrical grid would seem to be the cheapest way to provide this back up power instead of having a totally separate electric backup system that would most likely only see minimal usage.

Of course there also seems to be a limited trend of some folks to actually be totally off the electric grid. I recently read about one such group in the Carolina's. I hope you find the information you're looking for and make a decent living on providing home installations and conversions. Perhaps you might consider packaging such a system with an energy efficient home and start a trend with some builders to provide energy efficient home options.

[electrified]

I believe that batteries, especially lead/acid, have to be vented to the outside. Cars, RV's and such, all have thier batteries separate from any occupied area.