Backup Box Installations on the Costa del Sol & Costa Blanca
A lot of homeowners assume that if they have solar panels (or even a solar battery), they’ll still have power during a blackout.
In reality, without a backup box, your inverter shuts down when the grid goes down – even if the sun is shining – as a safety feature to prevent electricity feeding back into the grid during repairs.
That’s why Marblanc Solar installs backup box systems that detect an outage instantly and switch your home to solar and/or battery power — so essential circuits keep running seamlessly.
Want to know what backup setup is right for your home — and what it will cost?
Request a Free Solar Survey and we’ll assess your electrical setup, explain the difference between standard backup vs UPS, map priority circuits, and provide a clear installation quote.
Or call Marblanc Solar now on +34 951 82 30 83.
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Why Install Your Backup Box with Marblanc Solar
Marblanc Solar is one of Spain’s top-rated solar installers. We have offices in Marbella and Javea, and install systems along the Costa del Sol and the Costa Blanca.
Marblanc Solar was founded in 2022 by qualified electrician Adam Millington, and quickly grew into one of the top-rated solar installers in Marbella. Our growth is attributed to our Free Solar Survey process and robust post-installation support.
Here are the main reasons to choose Marblanc Solar:
- 95+ five-star reviews
- Free Solar Survey including drone scan, performance model, savings & payback period estimation
- Qualified team of electricians, survey engineers and civil engineers
- 25-year workmanship warranty (Marblanc Solar guarantee)
- Post-installation services including monitoring guidance, warranties, and direct WhatsApp support
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Recent Backup Box Installations
See our recent backup box installations on the Costa del Sol and the Costa Blanca in Spain.
See more projects on our Installations page.
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Backup Box Services
Find out more about how we design and install backup box systems for homes with solar panels (with or without batteries).
Free Solar Survey
Every backup project starts with a Free Solar Survey. We’ll also explain exactly what a backup box can (and can’t) power – and help you choose between a standard backup box (priority circuits) or a UPS-style whole-home backup solution.
Professional Installations
Your backup box is installed by our team of qualified electricians using proven, safety-first methods. Before handover, we fully test the switchover behaviour so you know exactly what happens the moment the grid drops.
Equipment & Upgrades
We supply and install backup systems that match your goals – whether you want to keep essential circuits running, or power the whole home seamlessly.
We also install solar batteries and EV chargers.
Post-Installation Support
We provide ongoing post-installation services: system monitoring, 25-year equipment and workmanship warranties, full legalisation, virtual battery switchover, and free annual servicing. You’ll also have a direct WhatsApp support channel open 7 days a week.
