The technology's not quite there yet for the residential market. Although the most modern devices can come with a storage system something like the size of a dishwasher meaning that power can be stored for use during the night, these power only those devices which need hardly any electricity anyway, like wireless routers and phone chargers etc - n electric shower would drain them in minutes.
But, just as a modern smartphone has many times more computing power than the entire Apollo 11 lunar module, it's only a matter of time before solar power will replace the national grid, at least for the residential market.