This is a question many homeowners forget to ask when a solar energy rep is talking with them. This question and the topic of adding battery backup to your solar energy system should come up during a consultation, but due to the cost of solar batteries, solar representatives often avoid talking about them. The fact is that with a solar battery or a generator you can still have power during a blackout.
Otherwise most solar systems shut down during the loss of electricity and turn back on after the blackout.
Ultimately, there are underlying questions which will help determine whether or not the added cost of a solar battery being included in a solar energy system design, makes sense or not.
An important factor to consider when having a solar energy system designed and installed is whether or not you experience a noticeable amount of electric service outages, or even extended periods of electric service outage.
If you have a specific reason for a generator, or a battery backup, make sure to ask about the difference in costs and benefits.