Solar Battery Storage
Why get battery storage?
Power life on your terms with solar and battery storage
Add storage to your Sunrun system
What's included?
We partner with battery brands such as Tesla, Lunar Energy and FranklinWH to deliver top-of-the-line hardware.
Equipment coverage
Whether through Sunrun or the manufacturer, your equipment will be warrantied for at least 10 years (duration depends on your location and package).
Expert installation
With over 1,000,000 customers and counting, we’re the premier installer of home solar and battery systems in America.
24/7 system monitoring
Our best-in-class monitoring proactively informs us of possible issues, so your system can operate at its best.
A game changer
Battery storage FAQs
Will an energy storage system allow me to go off grid?
Our rechargeable solar battery systems are designed to keep you on the grid during normal service times while providing reliable backup power when grid power isn’t available.
Storing excess energy from your solar company’s system can help you manage power consumption and save money by using stored power during peak pricing hours.
While full off-grid living requires significant battery storage, most homeowners find that staying connected to their local utility with a battery backup system is the most practical and cost-effective option. A trusted solar installer can help design the right setup for your needs.
How do home solar batteries work?
Your home battery or batteries will allow you to store the electricity your solar energy system produces during the day and use it when you need it most—such as in the evening during the time of use (TOU) peak pricing or when the electric grid fails due to an extreme weather event or physical damage to the equipment. (See below for more information on TOU peak pricing and whether it applies to your jurisdiction).
What are the benefits of home solar batteries?
With a home battery system, you’ll get even greater control over your energy and significantly boost your energy independence. You can store power that you produce during the day for use during power outages or after the sun sets. How we suggest you use your battery backup system varies by home; speak with a Sunrun consultant to learn more.
What brands of solar batteries are available?
Availability will depend on where you live. Sunrun installs premium hardware from companies like Lunar, Tesla, and FranklinWH. The right battery can help meet your energy needs by storing excess solar energy generated by your solar panels, allowing you to power your home with solar even when the sun isn’t shining.
A well-designed battery bank can also help reduce energy costs by optimizing energy usage and minimizing reliance on the grid.
How much battery storage does my home need?
Like solar panels, the size of your system (how many solar batteries we recommend you get) will depend on your unique battery and backup power needs.
Factors such as the amount of electricity you use at home and the devices and appliances you want to back up will play a key role in designing your ideal battery storage system.
Choosing lithium-ion batteries can also impact performance and efficiency. Lithium-ion batteries typically offer more energy storage in a smaller space, while flooded lead-acid batteries are a more traditional option. Sunrun’s battery offerings through Tesla, Lunar Energy, and FranklinWH are all lithium-ion solutions.
The right system will ensure you can power your home efficiently, especially during outages or peak usage times, bringing down electricity costs.
Where will my solar battery storage system be placed?
We’ll design a solution that’s right for your home based on a number of factors. Typical placement is on an exterior wall of your home with sufficient space or potentially inside your garage.
Pairing your battery storage with solar panels ensures you have reliable solar power available, even during a natural disaster or peak hours when electricity demand is high.
For those looking to back up their home, proper placement is crucial to optimizing efficiency and ensuring seamless energy transition when needed.
Will a solar battery save me money on utility bills?
In many cases, the answer is yes. However, your ability to save on electric bills—or overall—depends on several factors. Where you live and whether you already went solar (and when) affect which solar compensation programs you qualify for, which impacts your savings.
The combination of solar panels and the latest lithium battery allow generated electricity to be stored and used when electricity rates are high, maximizing savings.
A battery inverter ensures that any energy stored is converted efficiently for home use, helping you get the most out of your system.
Additionally, if you choose to purchase your battery and solar system, you may qualify for tax credits that can help offset the cost. If you're looking for added security, a battery system can also provide whole home backup, keeping your essential appliances running during outages.
Speak with a Sunrun representative to learn more about batteries and potential energy savings.
*Recommended battery operation mode varies by home. Some homes are not incentivized to use stored energy except during outages.
Can a solar battery operate without being connected to the power grid?
While most batteries are designed to work alongside the grid, some systems allow for off-grid operation in specific scenarios.
However, backup systems capable of powering an entire home independently require sufficient storage and high energy density to sustain continuous use. If you're considering an off-grid or hybrid setup, it’s essential to choose the right energy storage solutions to meet your needs.
Can a battery power my air conditioning during a grid outage?
Yes, but the ability to run AC during an outage depends on your battery’s capacity and high power output.
Some systems may provide enough power for essential appliances but might not sustain energy-intensive devices like an AC unit for extended periods. If running the AC on battery backup is a priority, selecting a battery with a large storage capacity is crucial.
What’s the difference between an AC-coupled system and a DC-coupled solar power system?
An AC-coupled system works with existing solar power setups by storing energy as alternating current electricity, making it ideal for retrofitting batteries onto an existing system.
A DC-coupled system, on the other hand, stores solar power as direct current electricity before converting it for home use, which can lead to better efficiency.
Choosing the right system depends on your home’s setup, energy consumption, and grid capabilities.
*Recommended battery operation mode varies by home. Some homes are not incentivized to use stored energy except during outages.