For solar panels on the roof of an ordinary home in Mallorca you need a comunicació prèvia (a prior notification) at the town hall, and your installer files the technical paperwork and registers the system with the Balearic energy authority. You need a full licence instead when the building is catalogued or in a historic centre, when the works touch the structure, or when the property is on rustic land. The Serra de Tramuntana, natural parks and apartment communities add their own steps. Here's how it fits together.
Step 1: the town hall
Spanish and Balearic planning law treats small works that don't affect structure or protected buildings as comunicació prèvia: you file the form and documents and can start. Palma's own ordinances name the comunicació prèvia d'obres as the route for rooftop solar, and most towns follow the same pattern.
A licencia de obra is needed instead when:
- the building is catalogued or sits in a historic centre (Palma's old town, Pollença, Alcúdia's walled town, Sóller, Valldemossa, Deià);
- the works involve structural changes or a new structure, such as a solar pergola or carport;
- the property is on rustic land (sòl rústic), which covers most fincas.
Licences take longer and cost more in fees, and in protected settings the town can set conditions on placement, colour and visibility, or refuse. Each town pages page on this site says which route applies locally. Municipal ICIO (works tax) applies either way; many towns rebate 50 to 95% of it for solar.
Step 2: the Balearic energy authority
This part is the installer's job, but you should know what's being filed:
- Memoria técnica de diseño for systems up to 10 kW, prepared and signed by the authorised installer, or a project signed by an engineer for systems above 10 kW, plus a works direction certificate. Batteries above 10 kWh and community systems often trigger a project.
- Electrical installation certificate (CIE), issued by the installer.
- Registration in the Balearic self-consumption register, the regional part of Spain's national register. Proof of this registration is what town halls ask for when you apply for IBI rebates.
For systems up to 15 kW on urbanised land with an existing supply, no separate grid-access permit is needed. The authority forwards the file to the distributor (e-distribución), which records the self-consumption modality and, if needed, changes the meter. Your retailer then switches your contract to self-consumption with compensation. Expect a few weeks between the installation and the first credited bill.
Step 3: surplus compensation
Systems up to 100 kW using renewable sources can join the simplified compensation scheme. Each month your retailer values the kWh you exported (fixed free-market offers run €0.04 to €0.06 per kWh; the regulated PVPC price varies by the hour) and credits them against the energy part of that month's bill. The credit can't exceed the energy term, can't make the bill negative and doesn't carry over. If you regularly export far more than you use, a battery or a bigger daytime load is the answer, not a bigger export.
Rustic land and the Tramuntana
Fincas sit on rustic land, where the rules are stricter and the town halls and the Consell de Mallorca both have a say:
- Panels on the roof of an existing legal building are normally admitted as an installation linked to the building, but need a licence rather than a comunicació prèvia.
- Ground-mounted panels depend on the plot's classification under the Pla Territorial Insular de Mallorca and the municipal plan. Protected rustic land limits or excludes them.
- The Serra de Tramuntana World Heritage area brings landscape review. Dark, frameless panels laid flush on a rear roof face, away from the street and the sea, are the design most likely to pass. Tilted frames on a visible terrace are the least likely.
- Natural parks (Llevant around Artà, Es Trenc-Salobrar near Campos and Ses Salines, S'Albufera) add conditions on nearby properties.
If the building itself isn't fully legal, that's the first problem to solve; solar comes second.
Apartment buildings and communities
Under the Horizontal Property Law, renewable installations in common elements can be approved by a simple majority of owners and quotas, and one third is enough when only those who vote in favour pay. Any owner can install an EV charger in their own parking space after notifying the community. Collective self-consumption then needs a sharing agreement filed with the distributor. See our page on community and apartment solar.
Off-grid systems
Isolated systems don't join the self-consumption register, but they're still electrical installations: the installer issues the CIE and files a memoria or project. On rustic land, the panels still need the municipal licence. See our page on off-grid solar for fincas.
What the installer should handle
A good quote includes the comunicació prèvia or licence application, the memoria or project, the CIE, the registration and the contract change, with the fees itemised. If a quote says "paperwork not included", the price isn't comparable with one that includes it. Our quote checker flags this.
Timelines
- Comunicació prèvia: you can usually start on filing.
- Licence in an ordinary zone: one to three months.
- Licence with heritage or landscape review: three to six months, sometimes longer.
- Energy authority registration and contract change: two to six weeks after the installation.
Building obligations
The Balearic climate change law (10/2019) obliges new buildings and major renovations over 1,000 m² and large car parks to install solar, and requires isolated new buildings to run on renewables. It doesn't oblige existing homes to install, but it's a sign of where the rules are heading.
Rules last checked in October 2026. Confirm the specifics with your town hall or let the installer do it; that's part of what you're paying for.
Common questions
Do I need an architect for solar panels?
No. Up to 10 kW the installer's memoria técnica is enough; above 10 kW an engineer signs a project. Architects come in only for structural changes or heritage buildings.
Can the town hall refuse solar panels?
In protected settings, yes, or it can set conditions on placement and colour. In ordinary urban zones a comunicació prèvia is a notification, not a request.