Residential Solar Panel Installations in Spain

Yes – and this is one of the things that sets Marblanc Solar apart.

As far as we know, we are the only solar installer on the Costa del Sol and Costa Blanca who presents your proposal in person during a dedicated second home visit. We do this for two reasons.

First, so we can walk you through the reasoning behind every decision – the layout, the equipment specified, and the projected savings – rather than emailing you a PDF and hoping it makes sense.

Second, because our design software allows us to make adjustments in real time. During your proposal visit you can ask us to:

• Add or remove panels from the system
• Add or remove equipment such as a battery
• Switch panel types – for example, from standard monocrystalline to full-black panels

We’ll show you immediately how each change affects the aesthetics, the projected savings, and the total investment. For adjustments that require more detailed calculations, we’ll have a revised proposal back to you within 24 hours.

In most cases, clients leave with at least two final proposals to compare so you can make the right decision for your home and your budget without feeling rushed.

Yes.

Your proposal includes professional mockups designed with the industry-leading software Pylon.

These designs show you the exact layout of your solar installation on your roof – so you can see precisely how it will look before agreeing to anything. This is produced as part of your Free Solar Survey, which provides over €250 worth of survey, design, and proposal value at no cost and with no obligation.

All cables are hidden from view as standard. We use existing ducting wherever possible to route cables discreetly through your property. Where we need to create a new penetration through a wall or ceiling, we core drill a clean hole and plaster it over on completion so there’s no visible trace of the work.

Any roof tiles disturbed or broken during installation are replaced. Once the system is commissioned and signed off, we carry out a full site clean-up before we leave.

You won’t know we were there – except that your electricity bill will look very different next month.

A solar panel system is often the starting point for a broader move towards energy independence — and we can project manage the full picture for you.

EV chargers

We install electric vehicle chargers that integrate with your solar system, allowing you to charge your car on the energy your panels generate rather than paying grid rates.

Solar batteries

Store the surplus energy your panels produce during the day and use it at night or during periods of low generation, reducing your reliance on the grid further.

Backup boxes

Keep essential appliances running during a grid outage. A backup box gives you power continuity even when the grid goes down.

Plumbing and heating systems

We can also project manage the installation of plumbing-based systems that pair well with solar, including air-to-water heat pumps, underfloor heating, and pool heaters. These are installed in coordination with qualified plumbing contractors we work with, with Marblanc Solar managing the full project on your behalf.

Pergolas and custom steel frames

Sometimes the best location for your panels isn’t your roof. We can design and build custom pergolas and steel mounting frames for ground-mounted or terrace installations. Where a structure requires an engineering sign-off, we bring in our trusted structural engineer to secure the necessary licence, design the frame, and oversee the custom build – so your installation is both structurally sound and fully compliant.

Each of these can be installed as part of your initial solar installation or added later.

Every Marblanc Solar client receives our aftersales support package free of charge for three years from the date of installation.

It starts the moment your system goes live. In the first two weeks, your survey engineer monitors your system remotely – through your solar app and directly via your inverter data through our installer account.

We’re looking for two things:

• Problems – anything that suggests your system isn’t performing as it should. Low output relative to solar conditions, efficiency drops, or unusual patterns that might indicate a configuration issue. If we spot something, we call you and fix it.
• Opportunities – patterns in your consumption that are costing you money unnecessarily. Running your pool pump at night and paying grid rates when you could shift it to daytime and run it on free solar energy. Unexpected spikes in consumption pulling electricity from the grid at peak times.

After two weeks, your survey engineer calls you directly with findings and recommendations for optimising your usage around your system’s output. We will then assist with installing plug timers, optimising circuits or finding a better solar feed-in tariff.

From there, your three-year package includes:

Direct WhatsApp access

You’ll be added to a dedicated WhatsApp group with your survey engineer, Project Manager John Bradley, and co-owners Roman Mitchell and Adam Millington. Message any day of the week for questions, concerns, or emergencies. You’re talking directly to the people who know your system.

Annual service

Once a year we carry out a full system service, checking your inverter, connections, and panel performance to ensure everything is operating at its best.

Annual panel clean

Solar panel output degrades with dust and soiling, particularly during the dry summer months on the Costa del Sol and Costa Blanca. One professional clean per year is included as standard.

Emergency callouts, 7 days a week

If something serious goes wrong, we come to you. Emergency callouts are available seven days a week for serious emergencies for the full three years.

Installing solar changes what the best electricity tariff looks like for your home – and most homeowners don’t realise their current deal is no longer the right one once their panels are live.

As part of your aftercare, we take your electricity bill and run a comparison against the solar feed-in tariffs currently available on the market. We identify which deal will maximise the value of the energy your system exports back to the grid. We have a direct relationship with one of Spain’s leading providers of solar feed-in tariff deals, through which we can secure preferential rates for our clients (further details available once your installation is confirmed).

We can also review your current supplier’s available solar tariffs to ensure you’re not missing a deal that’s already available to you.

Once you’ve identified the right tariff, we support you through the switchover process from start to finish.

We extend all equipment warranties to the maximum limit offered by the manufacturer – typically 25 years. This means your panels and inverter are protected for the long term.

But we’re also the only solar installer we know of on the Costa del Sol and Costa Blanca to provide a workmanship warranty. This warranty is detailed in your solar proposal and means we take full responsibility for the correct working of your system – not just the equipment inside it.

With most other installers, there is no service agreement and no workmanship warranty. If something goes wrong after installation, you’re on your own. We think that’s unacceptable. We stand by every system we design and install – and we put that in writing before you spend a penny.

Once your system is installed, commissioning is handled by our Project Manager John Bradley – a qualified electrician holding a QQI Level 6 Advanced Certificate Craft in Electrical from the Technological University Dublin.

John connects and configures your inverter, verifies that all system components are communicating correctly, and confirms that your panels are actively generating power before he leaves your property. Every electrical connection is tested and signed off by a qualified electrician – the same standard applied to every Marblanc Solar installation.

Once the system is live, you’ll have a dedicated handover session with both John and the survey engineer who designed your system. Together, they’ll walk you through:

• Your system components – every part of your installation, what it does, and where it is
• The solar monitoring app – how to read your real-time generation, consumption, and export data in your solar app, and what to look for day to day
• Safety features – the location and operation of your isolator switches, what to do in the event of a fault, and when to call us
  Your questions – a dedicated Q&A session with the people who designed and built your system, not a call centre

You won’t be handed a manual and left to figure it out. You’ll leave your handover session knowing exactly how your system works and who to call if anything ever changes.

Yes, we make sure every solar installation is fully legal.

Solar installations in Spain require a specific sequence of legal and administrative steps – getting them wrong can affect your ability to access the solar feed-in tariff or claim any available incentives. Our certified electricians handle the entire process on your behalf.

Here’s what’s involved.

Declaración Responsable

We prepare and submit the Declaración Responsable. It’s the formal notification of your installation to the relevant authority. This requires technical documentation signed by a qualified solar installer holding the Carnet de Instalador de Baja Tensión (the Spanish low-voltage installer licence). Every Marblanc Solar installation is signed off by a licence holder.

Licencia de Obra Menor

In most cases, your installation also requires a Licencia de Obra Menor from your local town hall (Ayuntamiento). This involves payment of the ICIO tax – however, the majority of town halls apply a 95% reduction on this tax for solar installations, significantly reducing the cost.

You can see an overview of the ICIO tax reductions available in popular towns in Malaga, Cadiz, Almeria, Cordoba, Huelva, Jaen, Sevilla, Alicante, Castellon and Valencia here.

Post-installation certification

After your system is installed and commissioned, we provide:

• The Certificado de Fin de Obra which confirms the installation has been completed
• The Certificado de Instalación Eléctrica (CIE), also known as the boletín, which is the electrical installation certificate required for your system to be legally connected
• Registration of your installation in the industrial registry of your autonomous communit

All of this is handled by our team. You don’t need to navigate Spanish bureaucracy on your own.

Marblanc Solar are official partners and registered installers for some of the world’s leading solar and inverter manufacturers – including Enphase, Fronius, Tesla, SolarEdge, Growatt, Deye, Goodwe, and Huawei.

Whatever equipment your system requires, we have the experience and accreditation to install it properly.

Solar Inverters

We are most experienced in installing solar inverters from the brands we are partnered with.

While can work with any existing setup or client request, we recommend Huawei inverters to the majority of our clients.

This is for three reasons:

• Huawei’s superior safety features and reliability (read a longer explanation about why we recommend Huawei inverters here)
• The Huawei FusionSolar app, which gives you clear, real-time monitoring of your system’s generation and consumption from your phone
• Seamless integration with other equipment – solar batteries, EV chargers, back up boxes – should you choose to expand the system

Solar Panels

We can work with all solar panel brands. That said, we recommend JA Solar panels for their high efficiency and long-term reliability. We have also installed systems using Hyundai panels and a range of other leading manufacturers.

Whether you’re looking for regular monocrystalline panels or all-black solar panels – which offer a sleeker, more discreet finish popular with homeowners who want a cleaner look on their roof – we’ll recommend the right panel for your property, budget, and system requirements.