Tesla Powerwall

With battery storage you can store the electricity from your solar panel system and then use it when you need it. My Contribution are proud to say we are Certified Installers of the Powerwall. Find out how the Tesla Powerwall can help you on your journey to energy independence.

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13.5 kWh
Charge Cycles
Up to 10

Reliable Battery Storage

100% Self-Powered

On a typical day, Powerwall will meet your energy needs.

Tesla Powerwall
Backup Power

Powerwall can keep your home running during a blackout.

Tesla App
You're in Control

With the Powerwall app, control your system from anywhere.

Tesla Certified

We are proud to be a Tesla Certified Installer. We have been installing the Tesla Powerwall across Wales since it first launched in the UK. Our team work with Tesla to ensure the highest standard of installation and aftercare.

Tesla Certified Installer

Powerwall Features


Continuous power during an outage.


Real time data showing energy usage.

Tesla App

Control how you use your Powerwall.


10 Powerwalls on a single phase.

Flexible Mounting

Install Powerwall on the floor or wall.

Charge cycles

Unlimited charging cycles.


Easily integrated with solar PV.


10 Year Warranty with Tesla Powerwall.

Backup Gateway 2

The Backup Gateway 2 is an essential accessory for the Powerwall. It manages the connected between the Powerwall, the grid and potentially a solar PV system. The Gateway 2 keeps you connected to your Powerwall providing you with alerts through the Tesla app. Gateway 2 also turns your Tesla into an uninterruptible power supply, meaning your home will continue running in the event of a grid outage.

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Uninterruptible Power Supply.

Always Connected
Always Connected

Monitor your energy usage in real time.

Backup Power
Backup Power

Manages the grid connection and Powerwall.

Solar PV
Solar PV

Manages solar PV with Powerwall.

Download the Brochure

Find out more about the Tesla Powerwall with a printable brochure made by Tesla.

Download Brochure

Reliable Battery Storage

Tesla Powerwall Specification
Tesla Powerwall Specs
Mounting Wall or Floor Mounted, Indoor/Outdoor
Inverter Fully integrated Tesla inverter
Usable Capacity Capacity: 13.5 kWh
Power 5 kW continuous, 7 kW peak
Round Trip Efficiency 90%
Operating Temperature Range –20°C to 50°C (–4°F to 122°F)
Warranty 10 years
Dimensions 1150 mm x 755 mm x 155 mm (45.3 in x 29.7 in x 6.1 in)”

Frequently Asked Questions

Take a look at some of the answers to our most common questions.

Powerwall needs an internet connection to work, this could be via ethernet cable or wifi. Our team can discuss this with you during a survey.

Can Powerwall go Off-Grid?

Powerwall will help you become less reliant on the grid and will meet most of your energy needs. It also has the capability to run your home in the event of a grid outage. Contact our team for more information.

What is self-powered mode?

In Self-Powered mode, Powerwall charges from your excess solar energy which is generated by your solar panels. Instead of sending the excess power back to the grid Powerwall stores it. This energy is then discharged during the evening and night to power your home.


Get in touch

We'd love to hear from you, simply fill in the form and we'll get back to you as soon as possible.


Units 5 & 6 Rushacre Enterprise Park
SA67 7ET