[toomanybeersies]

You don't even really need to tile your yard with solar panels. Depending on location, you could be self-sufficient(ish) with 10 kW of solar, 25kWh of batteries, and a 10 kVA generator for cloudy weeks.

Total cost is around $40k.

However, unless you're rural or somewhere with poor grid reliability it's probably not worth the expense of being off-grid. Generally speaking, due to generous feed-in tariffs you would be (financially) better off staying connected to the grid than spending the additional money required to handle periods of cloudy weather.