Tesla Powerwall 3 – 13.5 kWh Home Battery

The Tesla Powerwall 3 – 13.5 kWh Home Battery is an advanced residential energy storage system designed to help homeowners store solar electricity, reduce reliance on the grid and take greater control of their household energy consumption.

Manufactured by Tesla, the Powerwall 3 combines a high-capacity rechargeable battery, an integrated solar inverter and intelligent energy management technology within a sleek, compact enclosure. This all-in-one design makes it an excellent choice for homeowners looking to maximise solar energy usage, benefit from off-peak electricity tariffs and improve their property's energy independence.

Available through ECONEXIS, an MCS-certified renewable energy installer and Tesla Certified Installer, the Powerwall 3 can be professionally installed as part of a new solar PV system or integrated with suitable existing electrical and solar installations.

Tesla Powerwall 3 allows homeowners to store electricity and use it when it is most beneficial.

When connected to a compatible solar PV system, surplus electricity generated during daylight hours can be stored in the battery rather than immediately exported to the grid.

This stored energy can then be used in the evening, overnight or whenever household electricity demand exceeds solar generation.

For properties using time-of-use electricity tariffs, the system can also be configured to charge during lower-cost periods and supply stored electricity when grid prices are higher.

Through the Tesla app, homeowners can monitor their energy usage, review solar generation, track battery charge levels and manage supported operating modes.

Actual electricity savings depend on household consumption, solar generation, electricity tariffs, battery settings and installation configuration.

Performance, backup capability and installation requirements depend on the selected configuration and the property's electrical infrastructure.

When installed with the appropriate Tesla Backup Gateway and supporting electrical equipment, Powerwall 3 can provide backup electricity during power cuts.

The system is designed to detect a grid outage, isolate the property from the electricity network and supply stored battery energy to supported household circuits.

Backup capability is not automatically included with every installation and must be specified during the system design process.

ECONEXIS can assess backup requirements during the property survey and provide a separate quotation for the necessary equipment and installation.

For households requiring additional energy storage, Powerwall 3 supports compatible Tesla Expansion units.

Each Expansion unit adds 13.5 kWh of storage capacity, allowing homeowners to increase their available battery capacity without installing another complete solar inverter.

This flexibility makes Powerwall 3 suitable for households anticipating increased electricity consumption, such as those planning to introduce electric vehicles, heat pumps or additional electrical appliances.

The Tesla Powerwall 3 is particularly suitable for:

ECONEXIS is an MCS-certified renewable energy installation company and Tesla Certified Installer, providing solar panel, battery storage, EV charging and heat pump solutions across Essex, Bedfordshire, Hertfordshire, Buckinghamshire and Kent.

The company offers professionally designed Tesla Powerwall 3 installations tailored to individual household electricity consumption, existing solar equipment and future energy requirements.

Customers can arrange a free survey to assess battery positioning, electrical infrastructure, solar compatibility, cable routing and optional backup power requirements.

ECONEXIS provides installation, electrical certification, system commissioning and applicable renewable energy documentation, with final prices confirmed in writing before installation.

The published starting price includes qualifying 0% VAT and standard installation. Final costs depend on battery location, cable routing, existing electrical equipment and any additional requirements identified during the survey.

Optional backup equipment, including the Tesla Backup Gateway, is quoted separately.

Important Information: The advertised £6,390 starting price applies to a complete Tesla Powerwall 3 installation with its integrated inverter. Backup power functionality requires additional compatible equipment. Energy savings, charging performance and backup duration vary according to household electricity consumption, system configuration and operating conditions.