Tesla Powerwall 3 Battery Storage Systems
Advanced Solar Battery Storage for Homes and Businesses
What Is Tesla Powerwall 3?
Tesla Powerwall 3 is a fully integrated solar and battery storage system with built-in inverter technology, allowing it to store electricity generated from solar PV or the grid and release it when energy is needed most.
Each Powerwall 3 unit provides:
- 13.5 kWh of usable energy storage
- High continuous and peak power output, capable of supporting most property loads
- Seamless integration with solar PV systems
- Intelligent energy management via the Tesla App
Multiple Powerwall 3 units and expansion batteries can be installed together, making the system scalable for larger homes, commercial buildings, and multi-site applications.
Powerwall Technology
Tesla Powerwall 3 is a fully integrated solar and battery storage system with built-in inverter technology, allowing it to store electricity generated from solar PV or the grid and release it when energy is needed most.
Each Powerwall 3 unit provides:
- 13.5 kWh of usable energy storage
- High continuous and peak power output, capable of supporting most property loads
- Seamless integration with solar PV systems
- Intelligent energy management via the Tesla App
Multiple Powerwall 3 units and expansion batteries can be installed together, making the system scalable for larger homes, commercial buildings, and multi-site applications.
Tesla Powerwall 3 is a next-generation battery storage system designed to help homes and businesses reduce energy costs, increase solar self-consumption, and protect against grid outages.
At Igen, we design and install Tesla Powerwall 3 systems as part of fully integrated solar PV and energy storage solutions — helping you take control of your energy usage while meeting financial, operational, and sustainability goals.
As a Tesla-approved installer, we manage the entire process from system design and grid approvals through to installation, commissioning, and long-term support.
How Powerwall 3 Works with Solar PV
During daylight hours, your solar PV system generates electricity. Powerwall 3 stores excess energy that would otherwise be exported to the grid at low rates.
When solar generation drops — in the evening, overnight, or during peak tariff periods — stored energy is automatically discharged to power your property.
Powerwall 3 can also charge from the grid, allowing you to:
- Import electricity at off-peak or low-cost times
- Use stored energy during high-cost peak periods
- Optimise savings with time-of-use and export tariffs
All system behaviour can be monitored and controlled through the Tesla App, providing real-time insight into generation, storage, and consumption.
Key Benefits of Tesla Powerwall 3
Lower Energy Bills & Smarter Tariff Use
By storing low-cost or self-generated electricity, Powerwall 3 helps reduce reliance on expensive grid power. Intelligent software allows users to benefit from time-of-use, agile, and export tariffs, maximising financial returns.
Backup Power During Outages
When installed with Tesla Backup Gateway, Powerwall 3 automatically detects grid failures and supplies power to your property. This ensures continued operation of critical systems and allows solar PV to keep generating during outages.
Scalable for Larger Energy Demands
Powerwall 3 systems can be expanded by installing multiple units and battery expansions. This makes them suitable for:
- Large residential properties
- Commercial buildings
- Industrial and mixed-use developments
Long Life & Reliability
Powerwall 3 uses advanced lithium-ion battery technology with liquid thermal management, maximising performance, efficiency, and lifespan. Tesla provides a 10-year warranty with guaranteed energy retention when used in approved operating modes.
Indoor or Outdoor Installation
With a weather-resistant, compact design, Powerwall 3 can be wall- or floor-mounted indoors or outdoors, offering flexibility across a wide range of property types.
Commercial Battery Storage Applications
For businesses, Tesla Powerwall 3 can deliver significant operational and financial benefits, including:
- Load shifting to reduce exposure to peak electricity prices
- Peak shaving to avoid exceeding supplier demand thresholds
- Triad (TNUoS) cost reduction by limiting grid draw during critical periods
- Storage of on-site renewable generation for later use or export
- Improved energy resilience for critical operations
Igen designs each commercial battery system around your specific load profile, operating hours, and compliance requirements.
Smart Monitoring & Control
Powerwall 3 connects via Wi-Fi, Ethernet, or cellular network and is managed through the Tesla App, allowing you to:
- Monitor energy usage and battery performance in real time
- Track savings and solar self-consumption
- Receive alerts during outages or severe weather
- Adjust system settings to match changing energy needs
Why Choose Igen for Tesla Powerwall 3 Installation?
- Tesla-approved UK installer
- Fully integrated solar PV + battery storage expertise
- System design tailored to residential and commercial requirements
- Complete management of DNO applications and grid compliance
- Professional installation, commissioning, and handover
- Ongoing service, monitoring, and maintenance support
From initial feasibility through to long-term performance optimisation, Igen delivers battery storage systems you can rely on.
Battery Storage FAQ's
What is the usable capacity of Powerwall 3?
Each Powerwall 3 provides 13.5 kWh of usable energy, meaning the full capacity can be used without compromising battery life.
Can Powerwall 3 be expanded?
Yes. Multiple Powerwall 3 units and expansion batteries can be installed together to increase both power output and storage capacity.
Does Powerwall 3 work without solar panels?
Yes. Powerwall 3 can charge from the grid, but it delivers the greatest benefits when paired with a solar PV system.
Is Powerwall 3 suitable for commercial use?
Yes. Powerwall 3 is well-suited to commercial and industrial applications where load management, cost reduction, and resilience are priorities.
Speak to Igen About Tesla Powerwall 3
If you’re considering battery storage for your home or business, speak to Igen’s expert team today.
We’ll assess your site, energy usage, and objectives — and design a Tesla Powerwall 3 system that delivers measurable financial and environmental benefits.
Contact us today or submit an enquiry through our contact form. Our estimating and design team will respond with system layouts and performance forecasts within 48 hours.