From roof to app: how MiSolar designs, permits and commissions a bespoke PV system in Costa Blanca North

Do you need planning permission for solar in Spain? In Costa Blanca North, most domestic rooftop systems are considered minor works or are streamlined by the municipality, but each Ayuntamiento sets its own rules. We handle the paperwork, including municipal declarations, ICIO where relevant, and the legalisation process with the distributor. On completion, our certified electricians issue the Boletín (Electrical Installation Certificate) required for compliance and for supplier procedures such as surplus compensation. If grants or IBI reductions are open, we guide you on eligibility and documentation. Final approvals can vary by town, which is why local handling matters.

Can you legally install solar panels yourself? Spanish legalisation typically requires an authorised installer and certified electrician to sign off protections, cable sizing and safety under REBT. DIY risks rejection by the distributor, warranty issues and safety hazards, so we do not recommend it. 

Commissioning includes full testing, grid synchronisation, protection checks and setting up the monitoring app. We show you how to read production and consumption in real time, set alerts and view savings. We then configure schedules so daytime loads use your own generation first.

Dynamic load control is configured to match your contracted power and ICP, balancing large appliances so they do not trip the supply. For example, when the EV charger starts, the inverter and charger coordinate with the home meter to keep total draw under the limit. 

If you drive electric, we add a dedicated wallbox with load balancing and a solar-priority mode. Charging can be scheduled for the late morning and early afternoon, when roof production is strongest. The app lets you choose whether to charge only from surplus PV or at a set rate that respects your supply limit. Learn more about EV options and load balancing on our local page for EV charging.

We design your system to power common daytime loads directly:

- Air conditioning: cool rooms during peak solar hours and pre-cool before evening
- Pool pump: run steady low-speed filtration in the sun, with short higher-speed periods as needed
- Domestic hot water: heat with an air-source heat pump or immersion at midday
- EV: schedule charging to capture surplus

This approach increases self-consumption and reduces exports at lower tariffs. If you prefer, we also design for batteries or advise on virtual-battery supplier credits where suitable. For a deeper look at batteries and backup power, visit our guide to energy storage systems. 

How much does it roughly cost to install solar panels? It depends on system size, equipment, cable runs, civil works and legalisation. Local examples in our area show that a 5 kW system can range roughly from €5,000 to €12,000, while 7 kW examples are often around €7,500 to €8,000, but every property is different and final pricing follows a technical visit. For context on variables and how we prepare solar quotes, see our article with current guidance on solar panel cost and quoting in the region.

Finance options are available subject to approval and can be included in your itemised proposal if you prefer to spread costs. 

Starting in autumn allows time for survey, permits and installation so your PV is live for winter, when bills climb and the sun is lower on the horizon. We model winter production during design, use higher-efficiency modules for compact areas, and schedule DHW or pre-heating cycles to run when midday output is best

Coastal air brings salt and fine dust that dull panels. Clean in cool hours with clean water and a soft, non-abrasive cloth, and avoid pressure washers, harsh detergents and stepping on modules. We recommend periodic checks of fixings, wiring and the monitoring app, especially after storms. Our Jávea team provides safe cleaning, system checks and local troubleshooting if the app flags an issue. If you plan further electrification, such as an air source heat pump for underfloor heating or DHW, we can design the schedule with PV so midday heat cycles make the most of your generation.

Do you need planning permission for solar in Spain? In Costa Blanca North, most domestic rooftop systems are considered minor works or are streamlined by the municipality, but each Ayuntamiento sets its own rules. We handle the paperwork, including municipal declarations, ICIO where relevant, and the legalisation process with the distributor. On completion, our certified electricians issue the Boletín (Electrical Installation Certificate) required for compliance and for supplier procedures such as surplus compensation. If grants or IBI reductions are open, we guide you on eligibility and documentation. Final approvals can vary by town, which is why local handling matters.

Can you legally install solar panels yourself? Spanish legalisation typically requires an authorised installer and certified electrician to sign off protections, cable sizing and safety under REBT. DIY risks rejection by the distributor, warranty issues and safety hazards, so we do not recommend it.