SolarSME, Inc.
Tesla Powerwall 3 Installation
Take Control of Your Home’s Power with Tesla Certified Installer
Power outages don’t have to mean darkness, loss of food in your fridge, or concerns over the restoration of power. With Tesla Powerwall 3, you have the ability to store any excess power generated by your solar panels and use it when it matters most, whether at night, peak usage hours, or when the power grid fails.
Solar SME is a Tesla Certified Solar Installer helping people increase battery storage capacity, gain more savings from their solar system, and become less reliant on the power grid. Regardless of whether you want to integrate solar panels with battery storage or add Powerwall 3 to an already installed solar system, we can assist you in determining what’s best for your home.
What Makes Tesla Powerwall 3 Different?
Tesla Powerwall 3 is more than a battery that stores electricity. It’s a home energy storage system designed to work with solar, provide backup power during outages, and help people use stored energy when they need it.
Tesla Powerwall 3 has a total energy capacity of 13.5 kWh and delivers up to 11.5 kW of continuous power for both on-grid and backup operation. Moreover, Powerwall 3 has a built-in inverter and six solar inputs with Maximum Power Point Trackers.
This built-in inverter is the second most important thing which differentiates Tesla Powerwall 3 from Tesla Powerwall 2. Instead of treating the battery and solar inverter as completely separate pieces of equipment, Powerwall 3 combines key functionality into the system.
Tesla Powerwall 3 at a Glance
Features
| Energy Capacity | 13.5 kWh |
| Continuous Backup Power | Up to 11.5 kW |
| Solar Inverter | Integrated |
| Solar-to-Grid Efficiency | 97.5% |
| Solar Inputs | 6 |
| Expansion | Up to 40.5 kWh additional capacity per unit |
| Motor Start Capability | 185 LRA |
| Warranty | 10 years |
| Installation Temperature | -4°F to 122°F |
| Weight | 287 lbs. |
Tesla Powerwall 3 Whole-Home Backup Power: Keep Your Home Running When the Grid Goes Down
The whole-home battery backup ensures that more of the electrical loads remain functional during a power outage. When you have Tesla Powerwall 3, the stored energy will be used to power your devices when the main grid fails. The number of electrical loads supported will depend on various factors including:
- Refrigerators and freezers
- Lighting
- Wi-Fi and communications
- Heating and cooling equipment
- Security systems
- Appliances
- Selected EV charging loads
- Other household electrical circuits
How Many Powerwall 3 Units Do You Need?
The right number of batteries depends on your home’s electricity consumption, peak load, HVAC, electric vehicle charging, solar generation, and the number of hours required for backup.
Instead of recommending a one-size-fits-all solution, Solar SME analyzes your electric needs and decides on a single or multiple units of the Powerwall 3.
Adding Powerwall 3 to Your Solar? Here's How It Works
The most significant benefit of Powerwall 3 is its role in a solar-plus-storage system. Solar panels produce energy during the day, which does not necessarily need to be immediately sent to the electric grid. Compatible system configurations can use that energy to charge your battery. You can then use stored energy later when solar production drops.
That can help you:
- Use more of the solar energy your system produces
- Reduce electricity purchased from the grid
- Use stored energy at night
- Maintain backup power during outages
- Increase your home’s energy resilience
New Solar + Powerwall 3
Are you having solar panels and battery storage installed at the same time? In such a case, your system can be designed around your home’s energy production, consumption and backup requirements from the beginning. Solar SME can ensure that both solar and battery backup systems work hand in hand.
Adding Powerwall 3 to Existing Solar
Do you have solar panels already installed? Even if you have solar panels, you might be able to add Powerwall 3 to your existing solar system. According to Tesla, Powerwall 3 can be integrated with most solar inverters and can work well with different sized systems.
A retrofit may require changes to the existing system depending on your current inverter, electrical configuration and solar equipment. That’s why Solar SME recommends a site and system assessment before specifying a retrofit.
Size Your Battery Backup Around Your Home
Each property has varying energy needs. Some will require only one Powerwall 3 installation while others may require additional batteries to be added due to high power demands.
Having multiple Powerwall 3 units can provide more stored energy and greater system capacity. In addition to Powerwall 3 installation, Tesla also provides Powerwall 3 Expansion which increases energy storage but not the system’s power capacity.
Our Tesla Powerwall 3 Installation Process
Installing a Tesla Powerwall 3 involves more than simply mounting a battery. Our certified team ensures that your battery backup system is properly assessed, designed, permitted, electrically connected, configured, tested, and commissioned for reliable performance and seamless backup power. Our solar battery installation process includes:
1. Assess Your Home & Energy Needs
We review your electricity usage, existing solar system, electrical setup, HVAC, and backup goals.
2. Design Your Powerwall 3 System
We determine the right battery configuration and design how it will work with your solar and home's electrical system.
3. Handle Permits & Approvals
Our team coordinates the required permitting, inspections, and utility requirements for your project.
4. Install, Connect & Commission
We professionally install Powerwall 3, connect the necessary equipment, and test the system to ensure everything works as designed.
5. Walk You Through Your New System
Once everything is up and running, we'll show you how your battery backup works and how to monitor your home's energy system.
Looking for Powerwall 3 Installation Near You?
Solar SME is a certified Tesla Powerwall installer, providing solar and energy-storage services across the markets it serves. Our current service-area coverage includes markets such as:
Tesla Powerwall 3 Incentives & Financing
The cost of installing a Tesla Powerwall 3 can vary based on your location, system configuration, electrical work, solar integration and permitting requirements. However, many states offer incentives for energy storage that can reduce your installation costs by thousands of dollars. Also, even though federal tax credits for residential solar and battery storage has expired in 2025, homeowners can still take indirect advantage through solar leases and power purchase agreements (PPAs). Under third-party ownership (TPO) arrangements, a provider installs and owns the solar energy system, and the homeowner pays a monthly fee for the energy produced, which is usually lower than your electric bills. Furthermore, prepaid leases or PPAs are another option. In this case, homeowners pay an upfront sum in exchange for eventual ownership, which is typically after six years. This can be an appealing option for those who want additional solar savings and ownership.
Whether you’re planning a new solar + battery system or looking to add Tesla Powerwall 3 to existing solar, Solar SME can help you evaluate your options. Get a project-specific assessment and find out what Powerwall 3 configuration is right for your home.
Frequently Asked Questions
It depends on the battery configuration, electrical work, solar integration, permitting and other project requirements. The best way to determine your actual Powerwall 3 installation cost is through a property and system assessment.
Potentially, yes. Existing solar systems require a compatibility assessment based on the installed equipment and system design. Tesla provides specific Powerwall 3 system-design guidance for solar integration.
Tesla Powerwall 3 has an integrated solar inverter and provides up to 11.5 kW of continuous power in the U.S. Tesla lists 13.5 kWh capacity for both generations, but Powerwall 3 has a different system architecture and higher power capability.
Tesla currently lists a 10-year warranty for Powerwall 3. Applicable warranty terms should be confirmed for the specific installation and market.
Solar SME is a Tesla Certified Installer, bringing specialized expertise to Tesla Powerwall 3 installations. Our team ensures proper system design, professional installation, seamless integration with your solar system, and reliable battery backup tailored to your energy needs.
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