RS Electrical Group
Off Grid Solar Systems Perth & Western Australia
RSEG designs and installs off grid solar power systems for homes, farms, sheds, workshops and suitable commercial properties across Perth and wider Western Australia. These stand alone systems are designed for properties that are not connected to the electricity network or where extending grid power would be impractical or uneconomical.
An off grid solar system generally combines solar panels, battery storage, an inverter charger, system controls and often a backup generator. Unlike a standard grid connected solar system, it must supply the property’s full electrical demand throughout the year, including overnight periods, cloudy weather and seasonal changes in solar generation.
Accurate system design is essential. RSEG can assess daily electricity use, peak demand, appliance starting currents, operating hours, available roof or ground space and the level of battery autonomy required. High demand equipment such as pumps, air conditioning, electric cooking, hot water systems, machinery and workshop tools can significantly affect the system size.
Energy efficiency should also be considered before the system is designed. Efficient lighting, appliances, heating, cooling and pumps can reduce the number of solar panels and batteries required, lowering installation costs and improving system performance.
Backup generators are commonly included for extended periods of poor weather, unusually high demand or maintenance. The generator may be configured to charge the batteries or support loads when solar generation and stored energy are insufficient.
RSEG can assist with new stand alone systems, upgrades to existing off grid installations, additional battery capacity and electrical infrastructure for remote properties. Monitoring equipment can also provide information about solar generation, battery charge, electricity consumption and generator operation.
Off grid systems require realistic expectations about available power and responsible energy use. RSEG designs each installation around the property’s intended loads, location and operating requirements. Work is completed by appropriately licensed and accredited personnel, with the required electrical safety documentation provided for qualifying installation work.
Frequently Asked Questions
Have a read through some of the frequently asked questions we get asked every day as electricians and if you’re still needing help, please get in touch on our contact us page!
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An off grid system supplies electricity without a connection to the public electricity network. It normally uses solar panels, batteries, an inverter-charger and backup generation.
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Sizing is based on daily consumption, peak demand, appliance starting currents, seasonal solar conditions, required backup time and future electrical loads.
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This depends on the battery capacity, state of charge and electricity being used. Systems are designed around a selected level of autonomy rather than unlimited backup.
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A generator is commonly recommended to support the system during extended cloudy weather, unusually high consumption, faults or maintenance.
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Yes, provided the system is designed for the air conditioner’s running demand, starting requirements and expected operating hours.
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Yes. Pumps, refrigeration, machinery, tools and other equipment must be included accurately when calculating the required system capacity.
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Potentially. Expansion depends on the existing inverter, battery technology, system controls, installation space and compatibility.
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The system may start a compatible generator, disconnect selected loads or shut down to protect the batteries, depending on its design.
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Yes. Panels, batteries, electrical equipment, ventilation, connections and generators should be inspected and maintained according to the system design and manufacturer requirements.
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Yes. RSEG can assess suitable existing systems for additional solar panels, replacement batteries, inverter upgrades, monitoring or broader electrical improvements.
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