The house uses too much power to heat it to go completely off grid.
We generate about twice as much as we need but we would need a huge amount of battery storage to cope with windless days in winter etc. Our battery holds 13kwhours but I calculate needing about 10-12 batteries to smooth over enough. To afford that batteries need to be ten times cheaper at least. And we would need more power if we go to an all electric car. But who knows what breakthroughs could be on the way?
It could be that a practical fusion reactor will come along and make it all obsolete!
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sj