3kW Off Grid Solar System Installations

The system shown here represents a 3kW stand alone solar power system off grid solar suitable for a domestic home occupied on a full time basis for a small to medium sized family.

The electrical demand for a standard Queensland home is approximately 16 kW/hrs per day in summer and 12.6 kW/hrs during winter. The main discrepancy is due to refrigeration and space cooling being greater in summer.

The battery bank, comprising of Exide Energystore deep cycle batteries, reserves 3.5 days storage in the case of higher than average electrical demand or unseasonal weather. As with any correctly designed Off Grid solar power system, the battery bank remains at the heart of the system.

The battery bank, comprising of Exide Energystore deep cycle batteries, reserves 3.5 days storage in the case of higher than average electrical demand or unseasonal weather. As with any correctly designed Off Grid solar power system, the battery bank remains at the heart of the system.

The solar array comprises of 18 x 190 Watt Suntech mono-crystalline solar panels and were chosen due to their high efficiencies and 25 year output warranty. The Latronics 3.5 kW inverter was chosen as it is capable of delivering 10.5 kW instantaneously and is well suited for the continuous demand.

As a whole, this 3kW off grid solar system produces 5.2 MW/hours of electricity per year, with an annual savings of $1,200 per year and over the lifetime of the batteries of 12 years an estimated saving of $16,000 if the owners had decided that the grid was a better option.

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Here at Stand Alone Power Systems we specialise in the design and installation of any sized stand alone and off the grid solar power system.

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