For your home · Tesla Powerwall 3

Tesla Powerwall 3 installer for Birmingham and the West Midlands.

We supply and install Tesla Powerwall 3. It is a 13.5 kWh battery with the solar inverter built in, designed to be one unit on the wall rather than a stack of boxes. Before you buy a Powerwall from anyone, including us, read the warranty section below: Tesla's warranty depends on who installs it.

13.5
kWh per Powerwall
10 yr
warranty, 80% at year ten
Get a Powerwall quote Call 0121 661 6400

MCS-certified for battery storage and solar PV (NIC-600049) · We install across Birmingham, the Black Country, Worcestershire and Staffordshire from our base in Oldbury, and regularly travel 30 to 40 miles, Telford, Coventry, Shrewsbury and Stafford included. If you are on the edge of that, just ask.

Powerwall 3 in short

  • What it is: a 13.5 kWh home battery with an integrated solar inverter; up to four Powerwalls plus three Expansion units can work together, seven units and 94.5 kWh.
  • Backup: with the Backup Gateway 2 the house keeps running in a power cut; a Remote Meter (non-backup) configuration has no outage cover.
  • Build: IP55 enclosure with IP67 ingress protection on the battery itself.
  • Warranty: 10 years and 80% capacity retention at year ten; unlimited cycles for solar self-consumption, time-based control and backup.
  • Published price: £5,000 without the Gateway or £5,975 with it on tesla.com, excluding VAT, delivery and installation; our installed price is a single fixed figure.
  • Who installs it: We supply and install Tesla Powerwall 3. The warranty condition is set out below.

Read this before you buy a Powerwall anywhere

The warranty depends on who installs it.

Tesla's Powerwall warranty (European Warranty Region, Rev. 1.16, effective 3 December 2025) applies to a Powerwall purchased from Tesla or a Tesla certified installer, and installation, commissioning or repair by anyone else is a listed ground for voiding it.

In plain words: a Powerwall is not a battery you buy on price from whoever is cheapest this month. If the company that fits it is not on Tesla's programme, the ten-year warranty you are paying for may not exist. That is true of every installer, and it is why we put the condition on this page rather than in small print.

Where Green Tech Hub stands: ask us, and we will tell you in writing before you commit. If a specific Tesla programme status matters to you, we would rather answer the question directly than put a badge on a web page.

For a battery that does not carry that condition, our engineers' first recommendation for most homes is Sigenergy SigenStor, which we supply, install and commission, with Duracell Energy as the value option.

Specification, with sources

  • Warranty terms: 10 years, 13.5 kWh at installation and 80% capacity retention at 10 years for the UK; unlimited cycles apply to solar self-consumption, time-based control and backup, with other uses capped at 37.8 MWh of throughput. Source: www.tesla.com/en_gb/support/energy/powerwall/documents
  • Up to four Powerwalls plus three Expansion units can be combined (seven units, 44 kW, 94.5 kWh); the enclosure is IP55 with IP67 ingress on the battery; a non-backup configuration using the Remote Meter instead of Backup Gateway 2 has no outage cover. Source: www.tesla.com/en_gb/powerwall
  • Tesla publishes UK pricing on tesla.com/en_gb/powerwall/get: £5,000 without the Gateway and £5,975 with it, excluding VAT, delivery and installation. Source: www.tesla.com/en_gb/powerwall/get

Warranty figures are from Tesla's European Warranty Region document, Rev. 1.16; the document for the unit we quote is attached to the quote.

How a Powerwall install goes

Survey, G99, install, commission, aftercare.

1

Survey and model

An engineer surveys the roof, the consumer unit and the wall or floor the unit will sit on, and models generation and evening use from your smart-meter data.

2

Backup or not, fixed price

Backup Gateway 2 for outage cover, or the Remote Meter configuration without it; one fixed price with the warranty document attached.

3

G99 application

Tesla rates four Powerwalls together at 44 kW, 11 kW each, far above the 3.68 kW G98 limit, so a G99 application goes to your network operator before work starts.

4

Install to PAS 63100

Installed to the domestic battery fire-safety specification BS 7671 A4:2026 requires, by NICEIC-registered engineers, usually in a day.

5

Commission and aftercare

Backup circuits, tariff settings and the Tesla app set up with you; warranty registered; we remain the people you call.

Regulatory facts on this page: A G98 connection covers up to 16 A, which is 3.68 kW, per phase and is notified to the network operator after installation; anything larger needs a G99 application before work starts. BS 7671:2018+A4:2026 (published 15 April 2026) adds Chapter 57 for battery installations and requires batteries in dwellings to be installed to PAS 63100:2024, the BSI fire-safety specification for domestic battery storage. The 0% VAT rate on installing solar panels and batteries in homes runs to 31 March 2027, after which it reverts to the 5% reduced rate.

For your home

Where we install Powerwall

Where we install: homes across the Black Country, Worcestershire homes, solar panels in Staffordshire, and solar panels in Telford, Coventry home solar, solar panels in Worcester and Shrewsbury home solar.

Homeowners, in their own words

5.0 on Google from 44 reviews

  • ★★★★★
    “Solar panels and battery does as it says on the tin. Harj looked after us from start to finish and was always on hand to explain or help us with anything with the product, even a year later. Panels and the equipment look good. I would recommend this company.”
    Ken Tamorama · Google
  • ★★★★★
    “I had solar panels installed with Green Tech Hub, and they were highly professional throughout the process. Their operative was always contactable. I'd highly recommend them for solar panel installation.”
    Andrew · Google
  • ★★★★★
    “Very impressed with the director's knowledge. No high pressure sales pitch, just a clear explanation of the best system for us. The fitting was arranged quickly and the engineers were very efficient and tidy.”
    Michael Foster · Google

Read all 44 reviews, every one verbatim.

Powerwall questions, answered straight

Are you a Tesla certified installer?

Tesla's UK warranty applies to a Powerwall bought from Tesla or from a Tesla certified installer, and names installation by anyone else as a ground for voiding it. So this is the right question to ask any installer, us included, and the answer should be in writing before you commit. Ask us and we will tell you exactly where Green Tech Hub stands on Tesla's installer programme; we would rather lose a sale than have you find out at a warranty claim. Separately, we are MCS-certified for battery storage and solar PV through NICEIC (NIC-600049), which is what your export tariff and your insurer ask for.

What does a Powerwall 3 cost installed?

Tesla publishes the hardware price on its UK site: £5,000 without the Gateway and £5,975 with it, excluding VAT, delivery and installation. The installed price depends on whether you want backup (the Backup Gateway 2) or not, cable runs, where the unit goes and whether a G99 application is needed, so we give you one fixed figure in writing. Installing a battery in a home is 0% VAT until 31 March 2027.

Do I need the Backup Gateway?

Only if you want the house to keep running in a power cut. A Powerwall installed with the Remote Meter instead of Backup Gateway 2 has no outage cover: it still stores your solar and shifts your tariff, it just will not carry the house when the grid drops. Most of our customers want backup, but it is your call and we ask it at survey.

How many Powerwalls can I have?

Up to four Powerwalls plus three Expansion units can be combined, seven units in total, 94.5 kWh. For a house one Powerwall is the usual answer; two is for a large home with an EV and a heat pump. The survey models it from your smart-meter data rather than guessing.

Will it work with solar panels I already have?

Powerwall 3 has its own integrated solar inverter, so with new panels the design is simple. With an existing array the survey decides whether the panels connect through the Powerwall or stay on their existing inverter alongside it; both are routine, and we tell you which before quoting.

What does the warranty actually cover?

Ten years, 13.5 kWh at installation and 80% capacity retention at ten years for the UK, with unlimited cycles for solar self-consumption, time-based control and backup; other uses are capped at 37.8 MWh of throughput. The condition that catches people is the one above: the warranty applies to units bought from Tesla or a Tesla certified installer.

See all our FAQs

Get a fixed price for a Powerwall 3

Tell us the postcode, whether you already have panels and whether you want backup in a power cut. We will come back with a configuration, a fixed price and a straight answer on the warranty.

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