There are a number of options available to do that. The easiest of these is called a tandum breaker. This can give you an extra space in a full panel. Too many of these are dangerous, so the solution to that is to put a sub panel or pony panel in. Most houses have 200 amp service. If you are exceeding that, you may need to upgrade your service to 400 amp service. We can help you diagnose which of these solutions works best in your home!