"Can I go off-grid with solar?" is a question we are asked at least once a week. When the Big 6 hike electricity prices, make that once a day.
It's a particularly enticing proposition, especially if you are 'self-building' your dream home and aiming for PassivHaus standards and Grand Design prizes.
The short answer is "Yes you can go off-grid with solar."
A better answer is "Don't do it unless your grid connection is really expensive." Instead, make the grid work for you by taking full advantage of time-of-use tariffs (off-peak charging).
To illustrate our better answer, we've modelled an off-grid residential property with an annual electricity consumption of 5,000 kWh.