Community & shared solar
These solve different problems: bill savings versus outage backup power. See both numbers side by side to understand what each one actually gets you.
How it works
Step 1
Use your actual bill and a real subscription offer. Check the subscription savings calculator for a more detailed breakdown of this side alone.
Step 2
An installer can help you identify which circuits you'd actually want backed up and size the battery accordingly, since backing up an entire home costs significantly more than backing up just the essentials. If you're weighing paired solar plus battery instead, the community vs rooftop solar comparison covers that alternative path.
Community solar exists to lower your electric bill through a bill credit mechanism, while a battery exists to keep specific circuits powered when the grid goes down. Neither one does what the other does, so framing this as a straightforward either-or financial decision misses the point. The right question is which problem you're actually trying to solve, or whether you need to solve both. The Department of Energy's community solar basics guide covers what the bill credit mechanism actually does, useful background before comparing it to something as physically different as a battery.
A community solar subscription only affects your utility bill through a credit mechanism, it has no physical connection to your home's electrical system. When the grid goes down, your home loses power exactly like any non-subscriber's home, regardless of how much you're saving on your monthly bill. A grid-tied rooftop system without battery storage has this exact same limitation, covered by the grid-tie with battery backup comparison. Check the DSIRE database for your state's specific community solar billing rules if you want to understand exactly how the credit mechanism works where you live.
A battery installed purely for backup purposes typically charges from the grid and discharges only during an outage, which doesn't produce ongoing bill savings on its own. Pairing a battery with rooftop solar or a time-of-use rate plan can create genuine savings opportunities, but that's a different and more involved setup than a simple backup-only battery. Compare that pairing against community solar directly with the savings vs installed solar tool. The savings with versus without battery storage calculator covers this pairing's actual dollar impact in more depth.
If you live somewhere with frequent outages, rely on medical equipment, or simply want peace of mind alongside lower bills, pursuing community solar for savings and a battery for backup separately addresses both needs without either compromising the other. Check the community vs rooftop solar comparison and the ownership vs subscription comparison tool too if you're still deciding on your overall approach to solar. If you want the source document behind this, the DSIRE database has it.
Questions
No, community solar only provides a bill credit and does not supply any power to your home directly, including during an outage. Your home still loses power exactly like any other grid-connected home when the utility grid goes down, regardless of your subscription.
A standalone backup battery generally doesn't produce ongoing bill savings on its own, since it needs to be charged from the grid or paired with rooftop solar to store energy worth using. Some battery setups paired with time-of-use rates or paired rooftop solar can produce savings, but that's a different setup than a basic backup-only battery.
Yes, these are entirely independent systems that address different needs, so there's no conflict in having both. Many households pursue community solar for bill savings while separately installing a battery specifically for outage resilience.
This depends entirely on what problem you're trying to solve. If your priority is reducing your electric bill, community solar is the more direct and lower-cost path. If your priority is keeping power on during outages, particularly for medical equipment or in an area with frequent outages, a battery addresses a need that community solar cannot.
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