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Technology
pol | Sept. 20, 2026, 6:31 p.m.
Have you ever been left in the dark in the middle of dinner when your computer suddenly shuts down and you lose all your work for the day? Or worse: arriving home in a downpour and unable to open the garage door or being locked inside your house with the electric blinds down because the power went out?
And a detail that many people ignore: the gas boiler . No matter how much you have paid for the gas supply and the network is working, if there is no electricity the boiler will not start (it needs power for the electronic board, the ignition and the circulation pump). You can be left without heating or hot water in the middle of winter due to a simple power cut, when in reality the boiler uses a ridiculous amount of electricity!
The same thing happens with fiber optics: the street line is not cut with a blackout, but if your router and switches at home run out of power, you are left without internet, without teleworking and without an alarm instantly .
In the regions of Girona, LiFePO4 (Lithium-Iron-Phosphate) battery technology allows us to solve all this at once: a centralized, protected and remotely controlled battery bank from your mobile phone , avoiding having small and inefficient battery devices or "cradles" spread throughout all the rooms.
At ImmoGirona we explain exactly how much it costs and how it works.
If the light goes out at night or when you're not home, having a battery would be of little use if you had to manually go to the electrical panel to move a lever. For the small price difference, it's not worth installing a manual switch .
The professional solution involves installing an ATS ( Automatic Transfer Switch ) or using an inverter with integrated UPS/SAI function:
How it works: The ATS constantly monitors the electrical grid. At the exact moment it detects a voltage drop, it switches the power source to the batteries in less than 20 milliseconds .
The result: You don't even notice. The work computer doesn't restart, the gas boiler stays on, the WiFi network doesn't go down, and the alarm doesn't even know about it. When the power company restores service, the ATS automatically reconnects the house to the grid and begins recharging the battery.
To be 100% honest: a battery alone does nothing. For the system to work 100% automatically and safely you need three elements: the LiFePO4 battery , the pure wave inverter and the automatic transfer switch (ATS) module .
Let's do the numbers for a "lifeline" that keeps the gas boiler, router, alarm, computers, LED lights, and blind motors on:
Average consumption of the Vital Line: ~150W - 200W sustained.
Desired autonomy: About 5-6 hours of continuous cutting.
Energy required: ~1 kWh (1,000 Wh).
LiFePO4 12V 100Ah battery (1.2 kWh of energy): ~€220 - €250 (ultra-safe lithium technology, lasts over 15 years).
1,000W - 1,500W pure wave inverter: ~€120 - €150 (essential so that the boiler electronics and router do not burn out).
Automatic Switchboard (ATS): ~€70 - €90 (so that the response is immediate and without human intervention).
Protections and wiring: ~40 €.
Total calculation of the material: ~€450 - €530 .
If you also want a qualified electrician to leave your home panel prepared with the separate lifeline and the integrated ATS, the complete installation usually costs between €650 and €800 .
The solution consists of dividing the circuits in your electrical panel into two clearly separated lines from a single control point:
It groups together equipment with very low electrical consumption but absolutely critical:
Gas boiler: Guarantees hot water and heating (the pump consumes only about 60W-90W).
Router, switches and fiber: Internet connection and teleworking intact.
Security and alarms: Cameras, sensors and switchboard 100% operational.
Accessibility: Motors for the blinds and garage door so you never get trapped.
Computers and LED lighting: Zero risk of losing information and light throughout the house.
High-power equipment—such as air conditioning, heat pumps or glass-ceramic hobs—is automatically disconnected during a power outage to avoid draining the battery quickly.
If in the future you decide to expand the battery bank to a comprehensive 48V system , these high-consumption equipment will be powered by the battery during the most expensive hours of the day, reducing the monthly bill to a minimum.
Control from your mobile phone: A single centralized device (in the basement, garage or technical room) allows you to see in real time how many watts you are consuming, how much autonomy you have left and receive alerts if the street power is cut off.
Zero maintenance and security: Everything is protected in a single, ventilated and safe point, without battery inventories or noisy UPSs scattered throughout the rooms.
Evolutive: You start by connecting the boiler, router, blinds and lights for around €500 in material and, whenever you want, you can add more 48V battery modules to also cover the air conditioning.
As real estate experts, at ImmoGirona we check daily how buyers value "resilient" and future-ready homes:
Total peace of mind: A house where the heating doesn't stop, the garage door opens and the alarm never fails is an unbeatable selling point.
Revaluation and legalization: A centralized 48V system well integrated into the electrical panel improves the qualification in the Energy Efficiency Certificate (CEE) and allows access to IBI bonuses (up to 50%) and IRPF deductions (up to 40%) in municipalities such as Girona, Olot or Sant Julià de Ramis.
More attractive in the market: Properties that guarantee continuity of service and low costs are sold and rented much faster.
Do you want to say goodbye to scares and protect your boiler, router, garage and blinds 100% automatically for around €500 (material)? Install a centralized kit with ATS for low-consumption circuits.
Do you want total protection AND save on air conditioning and heating? Opt for a complete, legalized and 100% automated 48V storage installation that pays for itself with subsidies and electricity savings.
At ImmoGirona we advise you so that your property in the Girona region is a safe, efficient and revalued space. Do you want to know how to adapt or value your home? Contact our team!