The hybrid inverter that allows you to plug the battery into your house circuit (DC -> AC) seamlessly is around $2-3k + installation cost, cause you're touching the main panel. Why isn't that in the calculation?

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domenkozar a day ago | parent [-]

You plug it into a socket.

	▲	compiler-guy a day ago \| parent [-]
		Plugging a power-supply into a normal outlet like this is legal in many places, and illegal in many others. Check local code before proceeding!