HOME BATTERY STORAGE GUIDE

No. You can install a home battery with or without solar panels. Without solar, it can charge from the grid during selected periods. With solar, it can also store available solar generation for use later. The appropriate design depends on the property, tariff, electricity consumption and what you want the system to achieve.

In many cases, yes. The existing solar array, inverter, electrical arrangement, metering and network requirements must be assessed before we can confirm a compatible installation route.

Rated energy describes the stated total energy capacity of the battery. Usable capacity is the portion available within the product's operating limits and specified test conditions. Always compare figures from the applicable product datasheet.

Some compatible modular systems can support future expansion. This depends on the inverter, battery model, the age and condition of existing modules, permitted configuration and current manufacturer requirements. An authorised installer should always assess and complete any expansion.

No. The value of additional capacity depends on electricity consumption, solar generation, tariff rates, charging opportunities and how often you use the stored energy. Correct sizing matters more than simply choosing the largest battery.

This depends on inverter power, battery capability, system configuration and the combined demand from appliances operating at the same time. Battery capacity alone does not determine whether the system can supply a high-demand appliance.

A home energy system may be able to supply electricity for EV charging, but you must consider compatibility, charging power, battery capacity and overall household demand. EV charging can represent a substantial electrical load, so it should be included in the complete system assessment.

Yes, battery storage can form part of a home that uses a heat pump, but heat pump demand varies considerably with property efficiency, weather and operating conditions. The installer should consider the heat pump's consumption and power requirements when sizing the inverter and battery.

Some battery models carry environmental protection ratings suitable for approved outdoor arrangements, but this does not make every outdoor location appropriate. Temperature, exposure, mounting, protection, clearances and cable routes must be assessed for the specific product and location.

Battery life depends on the product, operating conditions, temperature, charging behaviour, system settings and usage. Warranty periods, cycle conditions and retained-capacity terms vary by model. Check the applicable warranty document rather than assuming that one figure applies to every product.

Maintenance requirements depend on the installed products and manufacturer guidance. Homeowners should keep the installation area clear, check for visible damage or warnings and contact their installer or the appropriate support route if they notice anything unusual. Homeowners should not open electrical enclosures.

Homeowners with compatible AlphaESS systems can use the AlphaESS App to view available solar generation, battery status, household consumption, grid exchange and system information. Available data, controls and settings depend on the installed equipment, connectivity, configuration and account permissions.

Requirements depend on the property, installation position, building status and local planning rules. Listed buildings, conservation areas and unusual installation arrangements may require additional checks. Your installer should identify the applicable electrical, network, building and planning requirements before work begins.

Battery storage should be designed, installed and commissioned by an appropriately qualified professional familiar with the selected equipment. An authorised AlphaESS installer can assess the property, recommend compatible equipment and explain the installation, monitoring and support arrangements.

Alternating current, the form of electricity used by most household appliances.

Electrical current that flows in one direction. Solar panels generate DC electricity, which must be converted to AC for home use.

The SEG mandates that licensed electricity suppliers offer a tariff and pay residential and small-scale low-carbon generators for electricity exported to the National Grid.

A system that monitors and manages the charging and discharging of the battery to ensure it operates safely and efficiently.

The proportion of a battery's rated capacity used during a discharge cycle. A battery with a 95% DoD can use 95% of its stored energy.

A system that optimises the use of energy stored in the battery by managing when to charge and discharge based on consumption patterns and grid conditions.

The network that delivers electricity from producers to consumers. When you use electricity from your utility company, you use grid power.

An inverter designed to coordinate compatible solar generation, battery storage, household demand and grid exchange.

A classification describing an enclosure's protection against solid objects and water under defined test conditions. It does not confirm that every installation location is suitable.

A measure of electrical power. It helps describe how much electricity a system or appliance can supply or demand at one time.

A measure of energy used or stored over time. Battery capacity and household electricity consumption are commonly measured in kilowatt-hours.

Lithium iron phosphate, a type of lithium-ion battery chemistry currently used in AlphaESS battery modules.

These are times when electricity demand and prices are low. Usually overnight.

Maximum Power Point Tracking, technology used by an inverter to manage energy from connected solar-panel strings.

Using electricity generated by your own solar panels rather than exporting it or drawing the same amount from the grid later.

An electricity tariff where prices or charging periods may vary according to time or other defined conditions.

A service that coordinates eligible distributed energy systems, such as compatible home batteries, to respond collectively to electricity-network requirements.

This design allows batteries to be added or removed easily to increase or decrease storage capacity.

Power provided by a battery system during a grid outage to keep essential appliances and systems running.

The number of complete charge and discharge cycles a battery can undergo before its capacity falls below a certain percentage of its original capacity.