Do I Need A Battery Backup System For My Solar Panels?

Posted on: May 6, 2014

Thinking about installing a solar electric system on your home or business, but wondering about whether a battery backup system is necessary or a good investment? If so, we can help.

As a leading HVAC and solar installation company in the Southern California market, we are frequently asked this question, so we wanted to take the opportunity to clear things up with this blog post.

But first, let’s review just what a battery backup system is.

What Is A Battery Backup System?

A battery backup system is a collection of batteries, commonly referred to as a battery bank, that is used to store excess power produced by your solar electric system. In a normal grid-tied system without a battery bank, the excess power produced is simply sent onto the electrical grid and credited to the property owners account.

Battery backup systems provide a distinct advantage that simple grid-tied systems without a battery backup do not; they provide power during blackouts. Solar electric systems without battery backup, by law, must shut down during blackouts so that they are not sending electricity onto the grid that can injure or kill electrical workers working to restore power.

Although battery backup systems provide emergency power in blackout situations, they are not for everyone. It is important to remember that power outages are very infrequent and battery banks can add a significant amount of cost to your solar electric system.

Now that that is out of the way, we’ll address the answer you came here for below.

Do I Need A Battery Backup System For My Solar Panels?

The simplest answer for this question is no, you do not need a battery backup system for your solar panels. A solar electric system works just fine without a storage system. In lieu of a storage system, a grid-tied solar electric system simply uses the grid to supplement any power it needs.

At night, when you are not producing power, you simply pull power from the grid. During the day, if you are producing excess power, that energy is sent back onto the grid and credited to your account. If you are experiencing a cloudy day and your system is not producing enough power to cover you entire energy needs, electricity from the grid will fill the gap without any disruption in service.

Want to Learn More About Solar in San Diego?

If you are considering installing solar and want to learn more about solar installation in San Diego and the surrounding area for your home or business, give us a call or fill out a contact form on the right. Our solar technicians can discuss the options that are available to you, assess your home’s solar potential, and even provide you with production and return on investment estimates!

Contact us today to get started!