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Tesla Powerwall 3 - 3x MPPT 11.04kW 1PH Inverter with 13.5kWh Battery
Tesla346 In Stock

Tesla Powerwall 3 13.5kWh Battery and Inverter | Gateway Kits

TES-POWERWALL-3
£5,532.50 ex. VAT
Kit: Powerwall 3 only
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High Conversion EfficiencyMore of your solar reaches the home
MPPT TrackingMaximises yield in changing light
Grid CompliantMeets UK G98 / G99 requirements

Tesla Powerwall 3 13.5kWh Battery and Inverter | Gateway Kits

What you receive depends on the option you choose. Each option below is a different product with its own part number:

Kit Part number
Powerwall 3 only TES-POWERWALL-3
With Backup Gateway 2 TES-POWERWALL3-PACK
With Remote Energy Meter (no backup) TES-PW3-NO-GATEWAY

Tesla Powerwall 3 can deliver 11kW discharge & 5kW charge with 13.5kWh of fully useable energy. Powerwall 3 achieves this by supporting up to 20 kW DC of solar and providing 11.04 kW AC of continuous power per unit. It has the ability to store up to 13.5 kWh of energy and start heavy loads rated up to 185 A LRA, meaning a single Powerwall 3 can support the power needs of most homes.

Energy That’s There When You Need It

Powerwall ensures reliable backup protection, withstanding extreme weather, cold temperatures, high humidity, and up to 0.6 meters of water.

Charge on Solar

Optimise your stored energy to charge your EV with clean energy anytime, even during outages. Adjust settings to use only excess solar energy for charging


Powerwall 3 in figures

13.5 kWhUsable energy
11.04 kWOn-grid power
11.04 kWBackup, site-dependent
5 kWCharging (8 kW with Expansions)
97.5%Solar-to-grid efficiency
3 MPPTUp to 20 kW solar
185 AMotor start (LRA)
10 yearsWarranty, when online

Battery and solar inverter in one wall- or floor-mounted unit, single-phase 230 V. Solar-to-home efficiency is 97.5%, and one unit can start the heavy loads of most homes.

Choose the kit

Powerwall 3 only

TES-POWERWALL-3
The Powerwall 3
Sites that already have a Gateway or meter
Backup power

With Backup Gateway 2

TES-POWERWALL3-PACK
Gateway 2, Mersen 22×58 fuse holder, 100 A fuse
Whole- or partial-home backup

With Remote Energy Meter

TES-PW3-NO-GATEWAY
Remote Energy Meter kit, 1.2 m RS-485 harness
Non-backup installs, upgradeable later

The Backup Gateway 2 detects a power cut and disconnects the home from the grid, so Powerwall 3 switches to backup quickly and keeps it running, at up to 11.04 kW depending on local conditions. The Remote Energy Meter replaces the Gateway for a simpler, lower-cost non-backup install. Powerwall 3 still stores solar or cheap-rate energy and exports at peak times, and a Gateway can be added later.

Gateway fuses. Since 1 April 2023 Tesla no longer supplies fuses or fuse holders with the Gateway kit. They are mandatory for the installation to withstand a 16 kA short circuit, and the datasheet rates Gateway 2 at 16 kA only with a BS 88.3 current-limiting fuse (10 kA without). The "With Backup Gateway 2" option includes the 100 A fuse and holder for a single-phase install.

Remote Energy Meter option: this configuration does not provide backup power during grid outages.

Output and grid connection

AC output is configurable from 3.68 kW to 11.04 kW. At 3.68 kW the maximum continuous current is 16 A, the G98 point, with a 20 A protective device. At the full 11.04 kW it is 48 A on a 63 A device. The Documents tab holds the G98 certificate for 3.68 kW, G99 certificates for 3–10 kW and 11.04 kW, and G100 certificates for export limiting at 5 to 11.04 kW.

Solar side

Three MPPTs track from 60 V to 480 V, taking 30 A each (38 A short-circuit). The input range is 60–550 V DC with a 600 V withstand, and up to 20 kW of solar at STC. The DC isolator and arc-fault protection (AFCI) are integrated.

Add to the system

Please Note: Powerwall 3 is not compatible with Neurio meter equipment
Please be aware that only Tesla certified installers are eligible to purchase Tesla products

Tesla Approval Process

  • Installer must be MCS certified and accredited with RECC or HEIS
  • Apply to be a Tesla Certified Installer directly with Tesla using the link below.
  • Tesla will review your application and if suitable you will be sent a contract and NDA to sign.
  • Once returned this will be countersigned by Tesla. Once countersigned you will be Tesla certified and can begin marketing the Tesla products.
  • Upon confirmation from Tesla, ClearRay Solar will make products live for you to view and order through the ClearRay Solar Portal.

You cannot install and commission a system until training is completed.

Click Here to apply to be a Tesla Powerwall installer today!

Part numbers
Powerwall 3 onlyTES-POWERWALL-3
With Backup Gateway 2TES-POWERWALL3-PACK
With Remote Energy Meter (no backup)TES-PW3-NO-GATEWAY

Powerwall 3 questions

How far can the system grow?

Up to four Powerwall 3 units and three Expansions, for 44 kW of continuous AC and 94.5 kWh of storage. Charging rises from 5 kW to 8 kW once Expansions are fitted.

Can it be installed outside?

Yes. The enclosure is IP55 and the battery and power electronics are IP67, rated for −20 °C to 50 °C. Typical noise is under 50 dB(A) at 1 m.

What does the 10-year warranty need?

A reliable internet connection. Wi-Fi, Ethernet and LTE are supported, but mobile data should not be the primary link.

How big and heavy is it?

1105 × 609 × 193 mm and 130 kg, for floor or wall mounting.

MCS ApprovedEligible for UK grants and installations