Backup Box installations

Free Solar Survey

Our Free Solar Survey includes: home visit, drone inspection, 3D performance model, two custom proposals and break-even estimations.

Free Solar Survey

*Quote includes free drone inspection, 3D model, and break-even estimation.

Professional Backup Box Installations in Spain’s Costa del Sol and Costa Blanca

Marblanc Solar provides backup box installations across the Costa del Sol and Costa Blanca for new solar systems designed to keep your property powered during a blackout. We install high-quality backup boxes that automatically switch your electrics to solar energy during a powercut – so quickly your lights won’t even flicker.

Our Free Solar Survey ensures the system is correctly integrated with your inverter and battery setup.

Click here to book your Free Solar Survey.

Retro-Fitting Backup Boxes to Existing Solar System

Some homeowners already have solar but want the added security of backup power during outages. In many cases, we can retrofit a backup box to an existing system, depending on the inverter and electrical setup. Our team will review your installation and recommend the best approach.

Switch to Your Solar Energy During a Power Cut

Many homeowners assume their solar panels will keep their house running during a blackout. In reality, most solar inverters automatically shut down when the grid fails. Without a properly configured backup system, you can be left without lights, internet or essential appliances during a power cut.

We believe homeowners should have the option to keep essential circuits powered safely during a grid outage.

Get a Sophisticated Backup Box System Tailored to Your Needs

Our backup box design process ensures your system delivers reliable power during outages without unnecessary complexity or cost.

The Top-Rated Solar Installer on Spain's Costa del Sol and Costa Blanca

Marblanc Solar was founded in Marbella in 2022 by qualified electrician Adam Millington. Co-owner and certified survey engineer Roman Mitchell joined the business in 2024. By 2025, we became the top-rated Marbella-based solar installer, backed by over 100+ Google Reviews and a 4.9/5.0 rating on Facebook.
In 2026, we expanded our solar installation services to the Costa Blanca via a new office in Javea, Alicante. Marblanc Solar is now the top-rated solar installer focusing only on the Costa del Sol and Costa Blanca.

Qualified Electricians and Survey Engineers

We believe that expertise is the foundation of a reliable solar installation. Our team’s qualifications ensure you receive the highest standard of service and design accuracy:

Co-owner Adam Millington: A qualified electrician with a Master’s in Sustainable Electrical Energy Systems.
Co-owner Roman Mitchell: A certified survey engineer.
Survey Engineers: Alan Manning and Miguel Angel Ruiz Zapardiel are both qualified electricians.
Site Manager: Site manager John Bradley is also a qualified electrician.
Installers: We use only in-house installers with years of experience mounting solar panels, while all electrical work and commissioning is done by a qualified electrician only.

Featured in Local Media

Our commitment to quality has been regularly recognised across the region. Marblanc Solar has been featured in: The Olive Press, Euro Weekly News, Bay Radio, The Spanish Eye, Sur in English. We’ve also been interviewed on local podcast channels such as “Ask the Experts” with Cloud Nine Spain.