No, it&#x27;s a matter of coverage. Every year you&#x27;ll have one stretch of 4 to 7 days without appreciable sun and this tends to deplete your batteries to the point where you will wreck the pack if you don&#x27;t recharge.<p>So you install either a wind generator, a genset or both.<p>&gt; As far as I can tell, panels + battery (properly sized, and admittedly expensive) are all you need.<p>In some locations this may be true, in most it isn&#x27;t.<p>&gt; You can just cancel your electric service at that point.<p>As soon as you have backup power you can do that anyway.