Brightbox Massachusetts

Premium Home Solar Battery Storage in Massachusetts

Are you prepared for when the next storm strikes? Don’t be left in the dark with clean, affordable energy that puts you in control. Keep reading to see how Sunrun Brightbox can power you towards a brighter future, whatever the weather.

Keep the Lights On with Brightbox

With Sunrun’s Brightbox™ home energy storage system, you can prepare for the unpredictable. Our home solar battery system equips you with reliable backup power, energy independence, and peace of mind. So when the next storm strikes, the sun can still power you forward. *Note - Our Brightbox solar battery service is currently only available for new Sunrun customers.

Solar Battery Technology

Energy storage technologies are crucial to a clean energy future. Sunrun’s Brightbox includes a powerful lithium-ion battery to optimize affordability, efficiency, and durability. When fully charged, your battery can provide approximately 8-12 hours of backup power on reserve, storing the solar power produced by your panels so you can use it when you need it most.

4 Ways Brightbox™ Powers You Forward

1. Peace of Mind During an Outage

We well know severe weather storms are hard to predict, not to mention a blackout. With Brightbox, you can rest easy knowing that you won’t be left in the dark.

Your home battery will have a constant reserve of power. You’ll also be able to choose which rooms and appliances you want to back up. That means you can keep your food cold, your phones charged, and the lights on during a power outage. When the sun’s back out, Sunrun’s solar panels will recharge your Brightbox home battery so you can continue to get backup power until the grid is up and running again.

2. Superior Service

We do the work so you don’t have to. Our flexible solar leasing options come with 24/7 proactive monitoring and maintenance, on us. If we notice that your home battery or solar panels aren’t working at their full capacity, we’ll send an expert over to fix it. We’re always standing by to make sure your home battery is in top condition, so you can keep powering on.

3. Control Over Your Energy

Brightbox puts your energy needs first. Our smart storage technology gives you control over your energy usage. During a blackout, you decide what rooms and appliances stay on. The more you know, the closer we get to putting the power back into your hands.

4. The Clean Alternative to Diesel or Natural Gas

Our home battery storage system is the clean alternative to diesel or natural gas generators. With Sunrun Brigthbox there are no harmful effects, no extra noise, and no gas or diesel.

Since you don’t have to refuel Brightbox with gasoline, you’ll also be saving on energy costs. Instead, our lithium-ion battery is charged by your solar panels, and has a storage capacity of approximately 8-12 hours of essential electricity. When the sun comes back out, your panels start recharging again. With the sun, you have unlimited power potential.


How Does Sunrun Brightbox Protect Me From Outages?


Throughout the day, your solar energy system powers your home and keeps your battery charged. Now, if there is an outage in the night, Brightbox can power the things you care about most for approximately 8-12 hours or until the sun comes up again.


Keep your food cold, your lights on, and enjoy greater peace-of-mind during a power outage with Sunrun Brightbox.

Keep your
food fresh
Watch TV
Power your lights
Open your
garage door
Use the

* Backup time estimates are based on a fully charged battery and typical use of standard appliances, lights, and outlets.


Power Through the Storm

Living in Massachusetts, you’re no stranger to unpredictable weather and power outages. Over 320,000 homes lost power after last October’s windstorm whipped through the Bay State, the most since Superstorm Sandy.1 In fact, there were 106 reported blackouts in 2016 alone.2 That’s thousands of families without power every three or four days.

But it doesn’t have to be this way. Massachusetts is working hard on moving away from harmful fossil fuels and toward solar energy for a cleaner, more resilient community.3

A Brighter Future for All

As extreme weather events continue to affect the state, the Governor of Massachusetts is exploring opportunities to power the state with solar power and energy storage projects while increasing the reliability of its electric grid.4 Sunrun is hard at work creating a brighter future for our kids powered by clean energy and less fossil fuels. Whenever you’re ready, our experienced Solar Advisors are here to help you every step of the way. See if you qualify, receive your free solar battery storage quote today.

Keep your home powered during an outage. Get a whole home backup

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Frequently Asked Questions

The amount of available backup power depends on what you choose to back up, what time of day and season the power outage happens, and how much energy your household uses. If the battery is fully charged, it can provide approximately 8-12 hours of backup. If your battery has been discharging throughout the day, it automatically holds a 20% reserve for a backup emergency, or about 3-4 hours for a blackout when the sun is down. When the sun comes back up, your Brightbox will start to charge again.

Yes. Brightbox is part of Sunrun’s holistic solar as a service offering. When you choose to go solar with Sunrun, you can add a Brightbox home battery if it is offered in your market.

At this time, Brightbox is only available to new Sunrun customers. We can’t install Brightbox if you already have an existing solar installation or if it isn’t offered in your area.

However, if you’re still interested in Brightbox please let us know—you’ll be the first to know when we’ve come up with a solution. We’re hard at work on optimizing our technology to provide an even more seamless customer experience.

Massachusetts has several incentives for going solar. One of them is the Residential Renewable Energy Income Tax Credit, covering 15%—or up to $1,000—of your solar system’s installation cost. Another major incentive is the federal solar tax credit, covering 26% of the final cost of the solar system. Currently, the residential federal solar tax credit gives you a dollar-for-dollar reduction against your federal income tax equal to 26% of the final cost of solar energy systems you install on your home. This benefit exists through December 31, 2022. In 2023 the residential tax credit will step down step down to 22%. In 2024, the tax credit for residential solar ends.

Learn more about Massachusetts solar incentives.

Brightbox works in tandem with the grid, and is not designed as an off-grid solution.

For most households, one solar battery is sufficient to power your most important appliances. In the event of a blackout, your Brightbox battery provides approximately 8-12 hours of backup power.

When the sun rises, your solar panels charge your battery so you can continue to backup your home until utility power is restored.

In the event of a power outage, appliances like your refrigerator, electronics chargers for cell phones, laptops, and your TV can be backed up by Brightbox for approximately 8-12 hours. When the sun rises again, your solar panels will recharge your Brightbox. The most important rooms and appliances in your home will be powered by your home battery until the grid is up and running again. Learn more about how home solar batteries work. 

Brightbox installation is a relatively simple process. The battery itself is about the size of a water heater and easily mounted on a wall—usually inside your garage or outside of your home. The clearance required for a Brightbox battery and its accompanying components is 6.5’ H x 10’ W.

You can use a portable generator—however, Sunrun doesn’t offer backup generators. If you’re interested in installing a portable generator, you can contact a local electrician or renewable energy installation company. These experts can recommend a system that will be appropriate for your home.

Please note that Brightbox cannot be installed on homes that already have a standby generator.

In the event of a power outage, your Brightbox automatically discharges power to your critical home appliances.

Learn more about how home solar batteries work.

Having a home solar battery service in Massachusetts will help you power through blackouts and get a clean alternative to loud and potentially dangerous diesel generators.

Your system is also covered by our Sunrun Guarantee, so we handle maintenance and repairs at no additional charge.

The electrical circuits in your home that power your lights and appliances are all connected to breakers, safely regulating the amount of power that feeds each circuit. Multiple appliances can be powered by one breaker. For instance, one breaker could power your refrigerator plus nearby outlets or lighting in your kitchen. While you can’t necessarily target individual appliances, with Sunrun Brightbox you can choose which breakers you’d like to back up. What you can back up depends on the current wiring of your home.

Our expert electricians will take care of installing and configuring your battery for you. Batteries last anywhere between 10 and 15 years, and manufacturers typically offer a 10-year warranty.

Still, Brightbox is more than home batteries; it’s a holistic service that includes professional maintenance and monitoring during the life of your agreement. Customers who own their battery get Sunrun service for 10 years, while customers with a BrightSave Monthly or Prepaid contract get free battery maintenance replacement for the lifetime of their contract - generally 20 or 25 years.

You can monitor your Brightbox battery’s performance on your mySunrun app. Sunrun also manages the battery remotely using proprietary software so we keep tabs on your system 24/7 to make sure it’s running as it should, and automatically updates your battery’s settings to save you as much money as possible.

Brightbox stores the electricity your rooftop solar produces during the day for when you need it most, such as in the evening, at night, or when the electric grid fails.

Our BrightSave Monthly and Prepaid solar plans come with 24/7 proactive monitoring and maintenance, on us. So if we notice that your Brightbox or solar panels aren’t working at their full capacity, we’ll send an expert over to fix it without you having to lift a finger.

Brightbox is a home solar battery service that offers clean, reliable and affordable power. Brightbox can be used for backup when the grid is down, or give you better control over your home energy use and cost.

Planned power outages


MEMA Outage Map

National Grid

National Grid MA Outage Map


Eversource Outage Map

Brightbox Solar Battery Storage Articles