- \n
- If your panels kept exporting electricity during a blackout, that current would flow back into the local network.<\/li>\n
- Engineers working to restore power could be seriously injured by live wires they expected to be dead.<\/li>\n
- Equipment further down the line could also be damaged by uncontrolled voltage.<\/li>\n<\/ul>\n
So when the grid drops, your inverter senses it within milliseconds and disconnects. The panels are still producing DC electricity on the roof, but there’s nowhere for it to go. Until the grid comes back online, the system stays dormant.<\/p>\n
![\"Irish](\"https:\/\/spvenergy.ie\/wp-content\/uploads\/2026\/05\/solar-inverter-standby-utility-room.jpg\" "\\"\\"")
<\/figure>\nWhat You Actually Need For Backup Power<\/h2>\n
If you want your home to stay powered during outages, you need to step beyond a basic grid-tied setup. There are two main ways to do this, and the right one depends on how much you want to spend and how much of the house you need running.<\/p>\n
Hybrid Inverter With EPS<\/h3>\n
A hybrid inverter combines solar generation and battery management in one unit. Many modern hybrid inverters include an EPS socket or output that activates during a blackout. It provides limited power, usually enough for essentials like lighting, broadband, and a fridge.<\/p>\n
The EPS function only works when the sun is shining or the battery has charge. It’s a useful safety net, but it’s not a full whole-home solution.<\/p>\n
Battery Storage With Full Backup<\/h3>\n
For genuine resilience, you need a battery system designed with backup circuits wired in. This setup isolates your home from the grid during an outage and runs your house from stored energy and live solar production.<\/p>\n
- \n
- The battery powers selected circuits, typically lights, sockets, the boiler, and the broadband router.<\/li>\n
- High-draw items like electric showers, ovens, and immersion heaters are usually left off the backup circuit.<\/li>\n
- When the sun returns, the panels recharge the battery automatically.<\/li>\n
- Switchover happens within seconds, so most appliances barely notice the gap.<\/li>\n<\/ul>\n
If you’re considering this upgrade, our team can talk you through the residential solar PV options<\/a> and what battery sizing makes sense for your usage. Most homes in Ireland find a 5kWh to 10kWh battery covers the essentials comfortably.<\/p>\n
How Much Does Backup Solar Cost in Ireland?<\/h2>\n
Pricing varies depending on the size of your solar array, the battery capacity, and whether you’re starting from scratch or retrofitting. As a rough guide for a typical Irish home:<\/p>\n
- \n
- A 4kWp to 6kWp solar PV system with hybrid inverter and basic EPS function usually lands between \u20ac9,000 and \u20ac13,000 before grants<\/a>.<\/li>\n
- Adding a 5kWh to 10kWh battery with full backup wiring adds roughly \u20ac4,000 to \u20ac7,000.<\/li>\n
- The SEAI residential grant of up to \u20ac1,800 applies to qualifying installations, knocking the upfront cost down.<\/li>\n
- 0% VAT on solar panels also helps reduce the total spend.<\/li>\n<\/ul>\n
You can check current grant rates directly with the SEAI solar electricity grant scheme<\/a>, which covers eligible systems on homes built before 2021. The team here handles all the paperwork for you, so it’s not something you need to chase yourself.<\/p>\n
Retrofitting a battery to an existing solar setup is also possible, though the cost depends on whether your current inverter is compatible. In some cases, a separate AC-coupled battery unit is the better route.<\/p>\n
![\"Solar](\"https:\/\/spvenergy.ie\/wp-content\/uploads\/2026\/05\/home-battery-storage-hybrid-inverter.jpg\" "\\"\\"")
<\/figure>\nWhat Will Backup Power Actually Run in Your Home?<\/h2>\n
This is where expectations need to match reality. A typical home battery backup is not designed to run your entire house at full tilt. It’s designed to keep the essentials going so life carries on while the grid is down.<\/p>\n
Appliances That Work Fine<\/h3>\n
- \n
- LED lighting throughout the house.<\/li>\n
- Fridge and freezer.<\/li>\n
- Broadband router and Wi-Fi.<\/li>\n
- Phone and laptop chargers.<\/li>\n
- Television and small electronics.<\/li>\n
- Gas boiler controls and pumps (if you have gas heating).<\/li>\n<\/ul>\n
Appliances to Avoid During an Outage<\/h3>\n
- \n
- Electric showers, which can pull 9kW or more.<\/li>\n
- Electric ovens and hobs.<\/li>\n
- Immersion heaters.<\/li>\n
- Tumble dryers and washing machines on hot cycles.<\/li>\n
- EV chargers running at full speed.<\/li>\n<\/ul>\n
In practice, this means a well-designed system can keep a family comfortable through a multi-hour storm outage without anyone really noticing. The fridge stays cold, the broadband stays up, and the kids can keep watching whatever they’re watching.<\/p>\n
Is Backup Worth It in Ireland?<\/h2>\n
Honestly, it depends on where you live and how much disruption power cuts cause you. Storm \u00c9owyn and a few rough winters have reminded everyone that the grid isn’t always reliable, particularly in rural areas where overhead lines are exposed.<\/p>\n
For homes in Cavan, Leitrim, Donegal, Monaghan, and other counties where outages can last days rather than hours, battery backup pays for itself in peace of mind alone. For urban homes in Dublin or Kildare where cuts are usually short, it’s more of a comfort upgrade than a necessity.<\/p>\n
That said, even short outages can damage food, knock out medical equipment, or leave you without heating on the coldest nights. If you work from home, the cost of lost productivity during a full day’s outage adds up quickly too. For commercial properties, the case is even stronger, and our commercial solar PV installations<\/a> can be designed with critical-load backup built in from day one.<\/p>\n
![\"Home](\"https:\/\/spvenergy.ie\/wp-content\/uploads\/2026\/05\/irish-kitchen-backup-power-running.jpg\" "\\"\\"")
<\/figure>\nGetting the Right Setup From the Start<\/h2>\n
- A 4kWp to 6kWp solar PV system with hybrid inverter and basic EPS function usually lands between \u20ac9,000 and \u20ac13,000 before grants<\/a>.<\/li>\n