Battery Bank Systems integrate with a Photovoltaic (PV) system to store excess solar energy generated during daylight hours. This stored power is then utilised on demand when required, reducing your overall consumption of grid electricity.

With the abolition of schemes such as the Feed in Tariff (FIT) in the UK, battery storage is becoming increasingly common for residential PV systems as PV is typically required by Planning Departments in order for developments to meet their Carbon reduction targets. 

The Sustainable Energy Authority of Ireland (SEAI), currently offer rebate to support the installation of Solar PV panels and battery energy storage systems for dwellings built and occupied before 2011, and where the SEAI has not previously provided support for solar PV system at that address.

Currently, utility-scale battery storage systems are mostly being deployed in Australia, Germany, Japan, the United Kingdom, the United States and other European countries. One of the larger systems in terms of capacity is the Tesla 100 MW / 129 MWh Li-ion battery storage project at Hornsdale Wind Farm in Australia. 

There are currently systems available on the market which will also provide a domestic property with continuous power during a power outage for one day up to seven days.

By 2030, small-scale battery storage is expected to significantly increase, complementing utility-scale applications.