The Fox ESS EP12 11.52 kWh Home Battery is a high-capacity residential energy storage solution designed to help homeowners store electricity, increase their use of solar-generated energy and reduce reliance on expensive peak-rate grid electricity.

Manufactured by Fox ESS, a specialist in renewable energy storage technology, the EP12 combines advanced lithium iron phosphate (LiFePO4) battery technology with intelligent energy management capabilities to provide a reliable and flexible solution for modern households.

Available through ECONEXIS, an MCS-certified renewable energy installer based in Chadwell Heath, Essex, the Fox ESS EP12 can be integrated with compatible Fox ESS inverter systems to support solar energy storage and off-peak electricity charging.

The Fox ESS EP12 is designed to give homeowners greater control over how and when they use electricity.

When connected to a compatible solar PV system, the battery can store excess electricity generated during daylight hours instead of immediately exporting it to the grid.

Stored energy can then be used during the evening or other periods when solar generation is insufficient, potentially reducing the amount of electricity purchased from an energy supplier.

For households using time-of-use electricity tariffs, compatible system configurations can also allow the battery to charge during lower-cost periods and discharge when electricity rates are higher.

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

Usable capacity, charging and discharging performance, inverter compatibility and other technical specifications should be confirmed against the manufacturer's documentation for the selected system.

The Fox ESS EP12 can be considered for a variety of residential energy requirements, including:

ECONEXIS is an MCS-certified renewable energy installation business based in Chadwell Heath, Essex, providing solar panel, battery storage, EV charging and heat pump solutions across Essex, Bedfordshire, Hertfordshire, Buckinghamshire and Kent.

The company offers Fox ESS EP12 battery installations for both compatible existing systems and new installations requiring a hybrid inverter.

Customers can arrange a free survey to assess their existing electrical installation, inverter compatibility, battery location and energy storage requirements.

ECONEXIS handles installation, electrical certification and applicable renewable energy documentation, with final pricing confirmed in writing before work begins.

Prices are based on ECONEXIS' published October 2026 pricing and include applicable installation costs. Final quotations depend on inverter compatibility, equipment selection, battery location, cable routing and existing electrical infrastructure.

Important Information: The advertised £2,790 starting price applies to battery installation with a suitable existing inverter. Customers requiring a new inverter should expect a higher installation cost. Energy savings and system performance vary according to individual property requirements.

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.

The Sigenergy Sigen EV AC 7 kW Smart EV Charger is an advanced residential electric vehicle charging solution designed to combine convenient home charging, intelligent energy management and seamless integration with compatible solar and battery storage systems.

Manufactured by Sigenergy, a specialist in smart renewable energy technology, the Sigen EV AC Charger offers efficient electric vehicle charging with advanced connectivity, dynamic load management and intelligent charging modes. Its modern, weather-resistant design makes it suitable for homeowners looking to charge their electric vehicles safely and conveniently at home.

Available through ECONEXIS, a renewable energy installation specialist serving Essex and surrounding counties, the Sigen EV AC Charger can be professionally installed as a standalone home charging solution or integrated with compatible Sigenergy solar and battery storage systems.

The Sigenergy Sigen EV AC Charger is designed to give homeowners greater control over how and when their electric vehicle charges.

Through the mySigen app, users can schedule charging sessions, monitor energy consumption and configure supported charging preferences.

When combined with a suitable electricity tariff, the charger can be programmed to operate during lower-cost overnight periods, potentially reducing the cost of charging compared with unrestricted peak-rate electricity use.

For households with compatible solar PV systems, the charger can also prioritise surplus solar electricity, helping reduce reliance on grid-supplied energy.

Actual charging costs and savings depend on electricity tariffs, vehicle efficiency, household energy consumption and system configuration.

One of the key advantages of the Sigen EV AC Charger is its compatibility with Sigenergy's wider renewable energy ecosystem.

When integrated with a compatible SigenStor system and the necessary monitoring equipment, the charger can coordinate with solar generation and household battery storage.

Supported operating modes include:

Solar surplus charging and dynamic load management require compatible supporting equipment, including the appropriate Sigenergy power monitoring components.

The Sigen EV AC Charger is available in two configurations to suit different charging preferences.

Untethered Charger: Features a Type 2 socket, allowing customers to connect their own compatible charging cable. This provides a tidy appearance when the charger is not in use.

Tethered Charger: Includes an attached Type 2 charging cable, providing additional convenience for everyday charging without needing to retrieve a separate cable.

Both configurations offer the same nominal 7 kW charging capability, subject to the vehicle's onboard charger and available electrical supply.

ECONEXIS provides renewable energy and electrical installation services, including solar panels, home battery storage, electric vehicle charging and heat pump solutions.

The company offers professional installation of the Sigenergy Sigen EV AC Charger, helping homeowners establish a convenient and reliable charging solution tailored to their property.

A standard installation includes the charger, up to 10 metres of cable, electrical connection, testing and certification.

Customers can request a quotation to confirm the most suitable charger configuration, installation location, cable routing and any additional electrical requirements.

For households with existing or planned solar and battery storage systems, ECONEXIS can also advise on compatible smart charging and energy management options.

Both prices include standard VAT and are based on ECONEXIS's published October 2026 installation pricing.

Standard installation includes the charger, up to 10 metres of cabling, electrical connection, testing and certification.

Additional costs may apply where longer cable runs, groundwork, consumer unit upgrades or other non-standard electrical work are required. Any additional work is assessed and quoted before installation.

Important Information: The charger's maximum charging rate depends on the vehicle's onboard charging capability, available electrical supply and installation configuration. Solar charging and advanced energy management features require compatible additional equipment. Final installation pricing is confirmed by ECONEXIS before work begins.

The ECONEXIS Essential – 4.7 kWp Solar Panel Installation is a complete residential solar energy package designed to help UK homeowners generate their own renewable electricity, reduce reliance on grid-supplied energy and take the first step towards greater household energy independence.

Professionally supplied and installed by ECONEXIS, an MCS-certified renewable energy specialist based in Chadwell Heath, Essex, the Essential package includes 10 high-efficiency, all-black 470W solar panels, providing a combined peak generation capacity of 4.7 kWp.

Designed for homeowners who want a cost-effective solar installation without immediately investing in battery storage, the Essential package offers a practical starting point for residential renewable energy. A compatible battery storage system can be considered as a future upgrade.

The ECONEXIS Essential package allows homeowners to generate electricity directly from sunlight using rooftop photovoltaic panels.

During daylight hours, the panels convert solar energy into DC electricity, which is then converted by an inverter into AC electricity suitable for use within the home.

Electricity generated by the system can power household appliances, lighting and other electrical equipment, helping reduce the amount of electricity purchased from the grid.

When solar generation exceeds immediate household demand, surplus electricity may be exported to the electricity network, subject to the installation configuration and export arrangements.

Eligible homeowners may be able to receive payments for exported electricity through a suitable Smart Export Guarantee or other export tariff, subject to supplier eligibility and metering requirements.

The solar panel manufacturer, inverter specification, mounting equipment and final system layout are confirmed during the property assessment and installation design.

The Essential package is particularly suitable for homeowners who want to benefit from solar energy generation without purchasing a battery at the same time.

Without battery storage, solar electricity is most beneficial when it can be consumed as it is generated. Homeowners may increase their direct solar electricity usage by operating appliances such as washing machines, dishwashers and water heaters during daylight hours.

A battery can be considered later if the household wishes to store surplus solar electricity for evening or overnight use.

For customers considering battery storage from the outset, ECONEXIS also offers its Smart and Plus solar packages, which combine the same 4.7 kWp solar capacity with Fox ESS home batteries.

ECONEXIS provides a complete solar installation service, from initial property assessment and system design through to installation, commissioning and certification.

The installation process includes:

The advertised package assumes installation on one roof elevation with a single scaffold lift. More complex roof layouts or additional electrical requirements may affect the final quotation.

The ECONEXIS Essential package is designed for homeowners seeking:

ECONEXIS describes this system size as suitable for many two- and three-bedroom properties. Actual suitability depends on roof dimensions, orientation, shading, structural condition and household electricity consumption.

ECONEXIS is an MCS-certified renewable energy installation company based in Chadwell Heath, Essex, serving homeowners across Essex, Bedfordshire, Hertfordshire, Buckinghamshire and Kent.

The company specialises in solar panel installations, battery storage systems, electric vehicle chargers and other renewable energy solutions.

Customers can request a free roof assessment and installation quotation to determine whether the Essential package is suitable for their property.

ECONEXIS designs the installation around the available roof space, provides the necessary electrical and certification documentation, and confirms the final installation price in writing before work begins.

The advertised starting price includes:

Additional charges may apply for installation across multiple roof elevations, additional scaffolding, longer cable runs, consumer unit upgrades or other non-standard electrical work. Any such requirements are assessed and quoted before installation.

Important Information: The 4.7 kWp rating represents the solar array's peak output under standard test conditions, not guaranteed continuous generation. Actual electricity production and financial savings depend on roof orientation, shading, local weather, system design, household electricity consumption and electricity tariffs. Battery storage is not included in this package.

The ECONEXIS Smart – 4.7 kWp Solar & 5.76 kWh Fox ESS EP6 Battery Package is a complete residential solar energy and battery storage solution designed to help homeowners generate renewable electricity, store surplus solar energy and reduce their reliance on grid-supplied power.

Professionally supplied and installed by ECONEXIS, an MCS-certified renewable energy specialist based in Chadwell Heath, Essex, the Smart package combines 10 high-efficiency 470W all-black solar panels with a Fox ESS EP6 5.76 kWh home battery, providing a balanced solution for households looking to benefit from both daytime solar generation and stored electricity during the evening.

Advertised as ECONEXIS's most-chosen solar package, the Smart system offers an integrated approach to home energy management, combining rooftop photovoltaic generation, compatible inverter technology, battery storage and intelligent monitoring.

The ECONEXIS Smart package is designed to make more of the electricity generated by a home's solar panels.

During daylight hours, the ten rooftop solar panels convert sunlight into electricity. A compatible inverter converts the generated electricity into a form suitable for household use.

When solar generation exceeds the home's immediate electricity requirements, surplus energy can be directed into the Fox ESS EP6 battery, subject to system settings and available storage capacity.

The stored electricity can then be used later in the day, including during evenings when solar production has reduced or stopped.

This provides a significant functional advantage over a solar-only installation, where electricity not consumed immediately is generally exported to the grid.

By combining generation and storage, homeowners can increase the proportion of their solar electricity used within the property.

The included Fox ESS EP6 is a residential battery storage unit designed to operate with compatible Fox ESS energy systems.

With a nominal storage capacity of 5.76 kWh, the EP6 provides an additional source of electricity for household use when solar generation is unavailable or insufficient.

The battery uses lithium iron phosphate technology, which is widely used in residential energy storage systems for its durability and thermal stability.

When configured with suitable equipment, the battery can support intelligent charging and discharging schedules, including the use of lower-cost overnight electricity tariffs.

The amount of household demand the battery can cover depends on electricity consumption, available usable capacity, inverter performance and the selected operating settings.

Exact inverter specifications, solar panel manufacturer, battery configuration and installation layout are confirmed during the property assessment.

The Smart package provides homeowners with several ways to manage household electricity usage.

Electricity generated by the panels can be used directly by household appliances, lighting and other electrical equipment.

Surplus electricity stored during the day can be discharged when solar generation decreases, helping reduce evening grid consumption.

With a compatible electricity tariff and system configuration, the battery may be charged using cheaper off-peak electricity for use during more expensive periods.

When the battery is sufficiently charged and household demand is met, surplus solar electricity may be exported to the grid.

Eligible homeowners may be able to receive payments through a Smart Export Guarantee or other export tariff, subject to the supplier's terms and metering requirements.

Actual electricity savings depend on solar generation, household consumption, electricity tariffs, battery settings and the property's installation characteristics.

ECONEXIS positions its Smart package as a popular choice for households seeking a balanced solar and battery installation.

It may be particularly suitable for:

Final suitability depends on roof dimensions, orientation, shading, electricity consumption and the property's electrical infrastructure.

ECONEXIS is an MCS-certified renewable energy installation business based in Chadwell Heath, Essex, serving customers across Essex, Bedfordshire, Hertfordshire, Buckinghamshire and Kent.

The company specialises in solar photovoltaic installations, home battery storage, electric vehicle charging and renewable energy solutions.

The Smart package is professionally designed and installed around the customer's property and electricity requirements.

The installation process includes:

ECONEXIS offers a free roof design and written quotation before installation, allowing customers to understand the equipment, installation requirements and final cost.

The advertised price includes:

The starting price assumes installation on one roof elevation with a single scaffold lift.

Additional costs may apply for multiple roof elevations, unusual scaffolding requirements, longer cable runs, consumer unit upgrades or other non-standard electrical work. These are assessed and quoted before installation.

The Smart package provides an intermediate option between ECONEXIS's solar-only Essential system and its higher-capacity Plus solar and battery package.

The Smart package is particularly appealing to customers who want battery storage from the outset without selecting the larger storage capacity of the Plus package.

Important Information: The 4.7 kWp solar rating represents the system's peak output under standard test conditions, not guaranteed continuous electricity generation. The 5.76 kWh battery rating is nominal capacity; actual usable energy and performance depend on the battery specification and system configuration. Financial savings vary according to roof conditions, weather, electricity tariffs and household consumption. Backup power during grid outages should not be assumed to be included unless specifically quoted.

The ECONEXIS Plus – 4.7 kWp Solar & 11.52 kWh Fox ESS EP12 Battery Package is a complete residential solar energy and battery storage system designed for homeowners seeking greater control over their electricity generation, storage and consumption.

Professionally supplied and installed by ECONEXIS, an MCS-certified renewable energy installation specialist, the Plus package combines 10 high-efficiency 470W all-black solar panels with a Fox ESS EP12 11.52 kWh home battery, providing a substantial renewable energy solution for modern households.

With 4.7 kWp of solar generation capacity and 11.52 kWh of nominal battery storage, the Plus package is particularly suited to homes with higher evening electricity consumption, electric vehicle charging requirements or households looking to take advantage of lower-cost overnight electricity tariffs.

Compared with ECONEXIS's Smart package, the Plus system provides twice the nominal battery storage capacity while retaining the same ten-panel solar array.

The ECONEXIS Plus package is designed to help homeowners make better use of the electricity generated by their rooftop solar panels.

During daylight hours, the ten photovoltaic panels convert sunlight into electrical energy. A compatible inverter converts this electricity into AC power suitable for use throughout the home.

Electricity generated by the system can be consumed directly by household appliances, lighting and other electrical equipment.

When solar generation exceeds immediate household demand, surplus electricity can be directed into the Fox ESS EP12 battery, subject to the battery's available capacity and operating settings.

The stored energy can then be used during evenings, overnight or other periods when solar generation is insufficient.

By combining solar generation with a larger-capacity battery, homeowners may reduce the amount of electricity purchased from the grid during peak-rate periods.

Actual savings depend on household electricity usage, solar generation, electricity tariffs and system configuration.

At the centre of the Plus package is the Fox ESS EP12, a high-voltage residential energy storage battery designed for use with compatible Fox ESS inverter systems.

The EP12 provides 11.52 kWh of nominal energy storage capacity, offering substantial flexibility for households with higher electricity consumption.

Its lithium iron phosphate battery chemistry is designed for reliable residential energy storage, while compatible Fox ESS monitoring and energy management systems allow homeowners to manage charging and discharging behaviour.

The EP12 can store electricity generated by the solar panels during the day and release it when required.

It can also support charging from the electricity grid during lower-cost tariff periods when the installation is appropriately configured.

For households considering future energy requirements, compatible EP12 systems can support additional storage capacity, subject to manufacturer specifications and inverter limitations.

The final panel manufacturer, inverter model, battery positioning and electrical configuration are confirmed during the property assessment and system design.

One of the main advantages of combining a 4.7 kWp solar array with an 11.52 kWh battery is the flexibility to manage electricity consumption across different times of day.

During periods of strong solar generation, surplus electricity can be stored for later use.

When solar generation is limited, the system can use stored electricity to supply household demand, reducing the need to purchase electricity from the grid.

For customers using suitable time-of-use electricity tariffs, compatible Fox ESS systems can also be configured to charge during cheaper overnight periods.

This allows homeowners to use lower-cost stored electricity during more expensive daytime or evening periods.

The financial benefit depends on the difference between tariff rates, battery efficiency, household electricity demand and how frequently the battery is charged and discharged.

The ECONEXIS Plus package is particularly relevant to households with electric vehicles or plans to introduce EV charging.

An electric vehicle can significantly increase household electricity consumption, particularly where charging takes place at home.

The larger Fox ESS EP12 battery provides additional energy storage capacity that may help households manage electricity usage alongside EV charging requirements.

For customers looking to install a dedicated home charger, ECONEXIS also supplies and installs compatible EV charging equipment.

A home EV charger is not included in the Plus package's advertised starting price and would be quoted separately.

The Fox ESS EP12 is designed for compatible modular energy storage configurations.

For homeowners whose electricity requirements increase over time, additional compatible EP12 units may provide a route to increased battery capacity.

For example, two 11.52 kWh EP12 units would provide a combined nominal capacity of 23.04 kWh, subject to supported system configurations.

Additional battery units, installation work and any necessary inverter upgrades are not included in the standard Plus package.

The Plus package may be particularly suitable for:

The most appropriate system size depends on the property's roof dimensions, orientation, shading, structural condition and household electricity usage.

ECONEXIS is an MCS-certified renewable energy installation company serving customers across Bedfordshire, Hertfordshire, Buckinghamshire, Essex and Kent.

The company specialises in solar photovoltaic installations, residential battery storage, electric vehicle charging and renewable energy solutions.

Every Plus package is designed around the customer's property, existing electrical infrastructure and energy requirements.

The installation service includes:

ECONEXIS offers a free roof design and written quotation, allowing customers to review the proposed installation and final price before proceeding.

The advertised starting price includes:

The advertised price is based on installation across one roof elevation with a single scaffold lift.

Additional costs may apply for multiple roof elevations, unusual scaffolding arrangements, longer cable runs, consumer unit replacements, backup power equipment or other non-standard installation requirements.

ECONEXIS assesses these requirements during the survey and confirms the final price in writing before installation.

The Plus package offers increased battery storage compared with ECONEXIS's Essential and Smart systems.

For an additional £1,100 compared with the Smart package's advertised starting price, the Plus package provides twice the nominal battery storage capacity.

This makes it an option worth considering for households with higher electricity consumption or greater overnight energy storage requirements.

Important Information: The 4.7 kWp solar rating represents peak output under standard test conditions, not guaranteed continuous generation. The Fox ESS EP12's 11.52 kWh capacity is nominal; actual usable capacity depends on manufacturer specifications and operating conditions. Battery backup during grid outages is not automatically included and requires suitable equipment and installation arrangements. Electricity savings vary according to system design, roof conditions, weather, electricity tariffs and household consumption.