Not enough to power my mail & web server and an electric kettle, unfortunately, where I live, especially during winter months (~2-3kWh / day, when electricity is most needed). It's more viable to use diesel generator if i were thinking of going off-grid. To go on further minimizing dependency on something that isn't readily available, i'd probably go with gasoline engine generator equipped with wood gasifier [1]. Green power, unfortunately, is no libertarians dream - it only works when you can scale - that is, basically, if you're state-level actor.