Solar Batteries and Blackouts: Ensuring Power During Outages
SOLAR INSIGHTS

Solar Batteries and Blackouts: Ensuring Power During Outages

By Brendan Bostock | 9 Jan 2026

Solar Batteries and Blackouts: Ensuring Power During Outages

Australia's energy landscape is changing, and with it, the frequency and impact of power outages. Whether it's due to extreme weather events, grid failures, or planned maintenance, blackouts can disrupt our lives and leave us in the dark. But what if you could maintain power even when the grid goes down? That's where solar batteries come in. To understand how solar batteries can help you during a blackout, have a look at this Complete Guide.

Solar Panels Alone Aren't Always Enough

Many Australian homes have embraced solar power, installing photovoltaic (PV) panels on their roofs to harness the sun's energy. These panels convert sunlight into direct current (DC) electricity, which is then transformed into alternating current (AC) by an inverter for use in your home. Any surplus electricity is often fed back into the grid, potentially earning you a credit on your bill through a feed-in tariff.

However, a standard grid-tied solar system is designed to shut down during a power outage. This is a crucial safety measure to protect electricity workers who are repairing the grid. If your solar system were to continue feeding power into the lines during a blackout, it could create a dangerous situation for those workers.

So, while solar panels are great for reducing your reliance on the grid and lowering your energy bills, they won't necessarily keep the lights on during an outage.

The Power of Battery Storage

This is where solar batteries come into play. A solar battery storage system allows you to store excess solar energy generated during the day, so you can use it later when the sun isn't shining or, more importantly, when the grid is down.

Think of it as having your own personal power plant, ready to kick in when you need it most.

Blackout Protection: The Key Component

Simply having a solar battery isn't a guaranteed solution to power outage woes. Your system needs to be specifically designed and equipped with blackout protection. This crucial component automatically disconnects your home from the grid during an outage, preventing electricity from flowing back into the grid and safely switching your power source to your solar battery.

This blackout protection feature is paramount for ensuring a seamless transition to backup power and protecting utility workers. It's vital to engage a qualified solar installer to ensure your system is correctly set up with this safety feature.

Preparing for a Power Outage: Assessing Your Needs

Before a blackout strikes, take the time to assess your energy needs. Identify the essential appliances and devices you need to keep running, such as:

  • Lighting
  • Refrigeration
  • Medical equipment (if applicable)
  • Internet access and communication devices
  • Heating or cooling systems

Estimate how much electricity these devices consume and how long you might need to power them during an outage. This will help you determine the appropriate size and capacity of a solar battery for your needs.

Maximising Battery Life During an Outage

During an extended power outage, it's essential to conserve energy to maximize the life of your stored solar power. Prioritise essential appliances and switch off non-essential items at the wall to avoid standby power consumption.

Many modern solar systems and batteries have monitoring capabilities through a display panel, website, or app. Use these tools to track your energy usage and identify areas where you can conserve power. If your system doesn't have built-in monitoring, consider installing additional devices to help you manage your energy consumption effectively.

Tips for Conserving Energy During a Blackout

  • Unplug unnecessary devices: Even when switched off, many appliances continue to draw a small amount of power.
  • Use energy-efficient lighting: LED bulbs consume significantly less energy than traditional incandescent bulbs.
  • Limit refrigerator and freezer use: Avoid opening the doors frequently to prevent temperature fluctuations.
  • Consider alternative cooking methods: If possible, use a gas barbecue or camping stove for cooking.

Is a Solar Battery Right for You?

Investing in a solar battery with blackout protection can provide peace of mind and energy independence during power outages. However, it's important to carefully consider your energy needs, budget, and the specific requirements of your home before making a decision. Consult with a reputable solar installer to assess your situation and recommend the best solution for your needs. Solar battery costs in Australia can range from $8,000 to $15,000+ depending on size and brand.

By taking these steps, you can be better prepared for power outages and ensure that you have a reliable source of energy when you need it most.

Brendan Bostock
Written by Brendan Bostock

Editor in Chief & Solar Enthusiast

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