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Photovoltaic (PV) solar systems

A solar PV power system is a technology that converts the energy from sunlight into electrical energy. Residential solar PV systems can offset much of your household's power needs, depending on the size of the system and your household's needs.

In a typical system, a set of photovoltaic modules, or 'solar panels', is installed on the roof of your home. The energy generated by these panels is passed through an inverter which creates electricity to match that coming in from the electricity network operated by Power and Water. This electricity then feeds into your local electricity network via the electricity meter. The meter records the amount of electricity produced and this information is provided by Power and Water to your electricity retailer to offset your electricity bill.

As the popularity of solar PV systems continues, Power and Water regularly updates its policy on solar PV installations to ensure the network continues to operate reliably and as many customers as possible can participate.

As of 1 August 2014, Power and Water has improved the application process such that domestic PV systems can be connected to the power network without undertaking extensive investigations. The maximum size that can be installed on a normal residential dwelling is a 4.5kW array. For dwellings with a three phase connection a 6kW array can be connected without undertaking extensive investigations.

A 4.5kW solar PV system will produce enough energy to offset up to 75% of the average domestic consumption, depending on the system installed. A 6kW solar PV system will produce enough energy to offset almost all consumption for an average domestic user, depending on the system installed.

For non-domestic customers an incremental “class” system has been established and additional requirements and/or investigation is required.

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