I investigated solar and generation requires appropriately sized circuits and capacity, even if the direction is the opposite.
so 100A panel + 100A of solar requires a 200A panel
A few other things that require high-amp service - on demand electric water heating, and electric car charging (and we're moving towards multiple vehicles).
It's also worth mentioning that by far the largest cost of an electrical circuit is the labor, so sizing for 100A, 200A and 400A is not 1x, 2x, 4x. upgrading later is a huge cost.
so 100A panel + 100A of solar requires a 200A panel
A few other things that require high-amp service - on demand electric water heating, and electric car charging (and we're moving towards multiple vehicles).
It's also worth mentioning that by far the largest cost of an electrical circuit is the labor, so sizing for 100A, 200A and 400A is not 1x, 2x, 4x. upgrading later is a huge cost.