How Solar Battery Installation Works: Step-by-Step Guide for Aussie Homes

Step-by-Step Solar Battery Installation Guide

Many Australians are choosing solar batteries to store excess energy generated by rooftop solar panels, allowing homeowners to maximise self-consumption, reduce energy bills, and improve energy independence. Batteries also provide crucial backup power during grid outages, contributing significantly to a sustainable lifestyle. 

Step 1: Initial consultation and site assessment 

The first step involves meeting with an installer accredited by Solar Accreditation Australia (SAA). The accreditation scheme transitioned from the Clean Energy Council (CEC) to SAA fully on  February 29, 2024, with installers required to transfer their accreditation by May 29, 2024, to maintain eligibility for rebates. 

During the site assessment, the installer will: 

• Evaluate your existing solar system: Checking inverter compatibility with batteries. For example, a Sungrow hybrid inverter could provide an efficient combined solar and battery solution if an upgrade is required. 
• Analyse your energy usage patterns: To determine the appropriate battery capacity. 
• Assess compliant installation locations: Often garages or shaded external walls, ensuring compliance with AS/NZS 5139 standards (avoiding habitable rooms, ceilings, or restricted areas). 
• Discuss your specific energy goals: Whether you aim primarily for blackout protection or energy bill reduction through maximised self-consumption. 

Step 2: System design and quotation 

After assessment, the installer designs a customised solar battery system proposal including: 

• Battery brand/model (e.g., Sigenergy, highlighting their modular design and advanced AI management systems). 
• Battery capacity (kWh) and power rating (kW). 
• Type of inverter solution (hybrid or AC-coupled). 
• Proposed component locations. 
• Detailed quote, including equipment, installation, and any necessary electrical upgrades. 

Review the quote thoroughly, clarifying warranty coverage, battery lifespan, and installer experience with proposed brands.

Step 3: Approvals and paperwork 

Before installation begins, your installer handles: 

• Grid connection approvals via your local Distribution Network Service Provider (DNSP).
• Local council permits, if applicable. 
• Federal battery rebate (Cheaper Home Batteries Program): Starting July 1, 2025,  eligible installations will receive a rebate of around 30% of the battery system cost or up to $372 per usable kWh. Batteries must be CEC-approved and installed by an SAA-accredited installer. Systems installed before July 1 but commissioned after this date may also qualify. 

Ensure you receive copies of all approvals. 

Step 4: Installation process (1–3 days) 

The physical installation typically takes one to three days, depending on complexity. Key stages  include: 

• Preparation: The installation team arrives with necessary components and confirms the installation plan. 
• Mounting battery: Installed securely in the agreed location, adhering strictly to AS/NZS  5139 clearance and safety requirements (e.g., distance from exits, habitable rooms, and fire-rated barriers). 
• Inverter installation/upgrades: Positioned near the battery and switchboard.
• Electrical wiring and connections: Ensuring compliance with AS/NZS 3000 Wiring Rules.
• Switchboard modifications: May be necessary for safe integration. 
• Safety checks: Conducted continuously throughout installation. 

Prepare clear access to the installation areas and your switchboard on installation days.

Step 5: System testing and commissioning 

Post-installation, installers conduct thorough system testing, including: 

• Ensuring secure and correct connections. 
• Verifying battery charge and discharge functions. 
• Confirming inverter operations. 
• Configuring monitoring systems or apps, allowing real-time tracking of energy performance.
• Providing operational demonstrations, including safe shutdown procedures.

Step 6: Grid connection and handover documentation

Final steps include: 

• Finalising grid connection procedures with your electricity retailer and DNSP.
• Potential inspection by utility providers for approval. 

Your installer provides a comprehensive handover pack containing: 

• System manuals. 
• Warranty documentation. 
• Electrical safety/compliance certificate. 
• Battery commissioning report. 
• System monitoring details. 
• Emergency contacts and shutdown procedures. 

Timeline: Consultation to operational system 

While installation itself takes 1–3 days, the entire process—from initial consultation to full operational status—typically spans several weeks. Timelines can vary based on grid approvals, equipment availability, and installer schedules. 

Key safety considerations 

Solar battery installation safety measures include: 

• Accredited installers: Choose only SAA-accredited electricians familiar with AS/NZS  5139 (battery system safety), AS/NZS 4777 (grid connection of energy systems via inverters), and AS/NZS 3000 (Wiring Rules). 
• Appropriate location: Compliant areas ensuring proper ventilation, clearance, and protection measures (such as bollards in garages to prevent vehicle impact). 
• Fire safety: Although rare, lithium-ion battery fires require regulated fire safety precautions, possibly including fire-rated barriers. Advanced models, like certain Sigenergy systems, incorporate built-in fire suppression features. 
• Approved products: Ensure batteries and inverters are listed on the current Clean Energy  Council-approved products list for rebate eligibility. 

Conclusion: Expert installation for lasting efficiency 

Installing a solar battery is a valuable step towards energy independence and sustainability. Choosing a reputable, SAA-accredited installer ensures a smooth, safe, and compliant process from initial consultation through to commissioning. 

For tailored advice and competitive quotes from accredited professionals, Your Energy Answers connects you with local experts to streamline your solar battery installation.