Tesla’s Powerwall 3 is making waves in the UK as a cutting-edge solution for home energy storage. If you’re a homeowner looking to boost your energy independence, here’s everything you need to know, including price, specifications, and crucial information for potential buyers.
What is the Tesla Powerwall 3?
The Powerwall 3 is a fully integrated solar and battery system designed to accelerate the world’s transition to sustainable energy. It can store solar or grid energy for later use, such as during peak hours, when the sun goes down or when the electricity prices are high.
Once installed by Egensys, customers can manage this home energy system using the Tesla App and customise the system’s behaviours to meet their energy goals. It is expertly designed for fast and efficient installations, and as a Tesla Premium Certified Installer, Egensys ensures a seamless and reliable integration within homes.
What is a Backup Gateway?
The Backup Gateway 2 provides energy management and monitoring for solar self-consumption, time-based control, and backup operation. When in Backup mode, it controls connection to the grid, automatically detecting outages and seamlessly switching to backup power. Communicating directly with the Powerwall, it allows you to monitor energy use and manage backup energy reserves easily from the Tesla app.

Key Features and Specifications
Storage Capacity – 13.5 kWh
Max Charge Rate – 5kW
Man Discharge Rate – Up to 11kW
Battery Product Warranty – 10 Yrs
Price and Installation
At Egensys, we offer very competitive pricing. Our packages for the Tesla Powerwall 3, including the product and installation, are –
Powerwall 3 Without Backup Gateway – £6,299
With Backup Gateway – £6,999
What Are the Benefits?
Save money on electricity bills – With self-stored electricity, you can help shield yourself from energy price fluctuations by charging your system during off-peak hours or via solar panels. Or you can even charge it with cheaper off-peak energy and power your home during the daytime when rates are higher.
Greater energy independence – By storing your own self-generated solar energy, you reduce your reliance on the grid, giving you much greater energy independence.
Power your home during an outage – With the Backup Gateway, this system can provide seamless backup power, keeping essential appliances running even during outages.
Solar system integration – The Powerwall 3 integrates easily with solar panels, whether they’re new solar installations or existing setups. What’s great about this unit is that it acts as both a battery and an inverter, meaning you don’t need to buy a separate inverter for new solar systems.
Smart technology – You can monitor and manage your energy use via the Tesla App, optimising your energy consumption and savings.
Feed-In Tariff Compatible – Powerwall is fully compatible with Feed-In Tariffs, so if homeowners have solar PV, they can even sell their self-generated electricity back to the grid, and make some profit.
Things to Consider Before Buying
- Energy Consumption – Assess your household’s energy consumption to determine if the Powerwall 3’s capacity meets your needs. You may need to add an expansion pack, too.
- Choosing the Right Installer – A certified installer ensures compliance with Tesla’s standards, manages grid regulations, and ensures seamless integration with your home and its current technologies. Choosing the right installer is essential. At Egensys, we are proud to be an MCS and RECC-accredited team and a Tesla Premium installer.
- Warranty and Support – Typically, Powerwall 3 comes with a 10-year product warranty.
The Tesla Powerwall 3 offers a reliable and efficient way to manage your energy, reduce your bills, and keep your home powered during outages. It maximises savings and minimises reliance on the grid. While the initial investment is considerable, the long-term benefits make it a compelling option and can be a valuable asset to your home.