Solar advice
Solar advice for homes in Spain
Plain answers to the questions we hear most, from what a system costs to what happens in a power cut. Written by the people who survey and install, for houses on the Costa Blanca and in the south-east of Spain.
Sunrise Energy
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Answers are looked up in our own guides, written by the Sunrise Energy team. Nothing here is generated.
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01 · 7 guides
Costs and savings
What a system costs, what it is worth to you, and how the bill changes.
- 02Are solar panels worth it in Spain? Savings and payback, worked outHow to work out what solar panels are worth for your own house: how much you use while the sun shines, what that power is worth on your bill, what exported power earns and how that becomes a payback period.3 min read
- 03When are solar panels not worth it in Spain?Some houses are better off without solar panels, or with a different design than the one they had in mind. The situations where we advise waiting, changing the plan or not going ahead.2 min read
- 04Selling excess solar electricity in Spain: how compensation worksSolar power you do not use goes to the grid. For most homes it is not sold but credited on the monthly bill under simplified compensation. How that credit is worked out, what limits it, and what “virtual batteries” are.4 min read
- 05Can solar panels eliminate your electricity bill in Spain?Rarely completely, and anyone who promises a zero bill should show how. Which parts of a Spanish electricity bill solar power reduces, which stay whatever you do, and when the bill gets close to zero.3 min read
- 06IBI tax discounts for solar panels on the Costa BlancaMany town halls reduce the IBI property tax for homes with solar panels, but the percentage, the years, the conditions and the deadline differ from town to town, and some give nothing. What each municipality we serve offers, checked against its ordinance on 30 September 2026.3 min read
- 07How to choose a reliable solar installer and compare quotes in SpainA neutral checklist for choosing an installer in Spain: credentials, the survey, the design, the yield estimate, warranties, paperwork and aftercare, and how to put two quotes side by side.3 min read
02 · 10 guides
Your house and roof
Roofs, carports and pergolas, holiday homes and villas, and how big a system to fit.
- 02How many solar panels do I need for a house in Spain?The number of panels follows from how much electricity you use, and when. How to go from your bill to kWh, from kWh to kWp, and from kWp to a number of panels.3 min read
- 03Solar panels for holiday homes in Spain: are they worth it?A house that stands empty for part of the year uses power differently from a home you live in. What that means for the size of a system, and how to keep an eye on it from abroad.4 min read
- 04Solar panels for villas with pools and air conditioningA pool pump and air conditioning are the loads that make a villa’s bill, and both run while the sun is up. How to work out what they use and size panels to match.3 min read
- 05Installing solar panels on a flat roof in SpainFlat roofs and roof terraces are common on the Costa Blanca and work well for solar. What changes compared with a sloping roof: the frames, the fixing, the waterproofing and the space between rows.3 min read
- 06Solar carport vs rooftop solar: costs and practical differencesA carport gives panels a second home when the roof is small, shaded or awkward. How the two compare on structure, paperwork, cost components, shade and charging a car.3 min read
- 07Can solar panels be installed on pergolas and terraces in Spain?A pergola over a terrace can carry panels and give shade at the same time. Whether an existing one can take them, what a purpose-built one involves, and what to check first.3 min read
- 08What types of mounting systems exist for tiled roofs in Spain?2 min read
- 09How do shading and orientation affect solar production in Spain?3 min read
- 10How much roof space do you need for solar panels in Spain?4 min read
03 · 4 guides
Batteries and the grid
Self-consumption, batteries, inverters and what happens in a power cut.
- 02How solar self-consumption works in SpainAlmost every home system in Spain is a grid-connected self-consumption system, or autoconsumo. How the power flows from the panels through the house to the grid, what the three types of autoconsumo are, and how the system is registered.3 min read
- 03Do solar panels work during a power cut in Spain?A standard solar system switches off when the grid goes down, even in full sun. Why that is, what a back-up system does differently, and what to decide before the next power cut.3 min read
- 04How do solar inverters work and why are they essential?3 min read
04 · 8 guides
Sun, heat, wind and salt
How panels cope with the Costa Blanca climate, and how to look after them.
- 02How do you protect solar panels from strong winds?Panels are protected from wind by how they are designed and fixed, not by anything added later. How wind acts on panels, what a sound mounting looks like, and what to check before and after a storm.3 min read
- 03Do solar panels lose efficiency in the Spanish summer heat?Yes, panels convert a little less when they are hot. They still produce the most in summer, because there is so much more sun. How the temperature coefficient works, and what reduces the effect.3 min read
- 04How often should you clean solar panels in Spain?When they need it, not by the calendar. How to tell from your app whether dirt is costing you production, what is safe to do yourself, and when to leave it to a professional.2 min read
- 05What maintenance does a solar inverter require in Spain?2 min read
- 06What is the lifespan of solar panels in Spain?3 min read
- 07How do you monitor the performance of your solar panels?3 min read
- 08What type of solar panels are most suitable for the Spanish climate?4 min read
05 · 3 guides
Permits and installation
The paperwork, the steps and how long it all takes.
- 02How long does solar panel installation take in Spain?The work on your house is short, often a single day. The time goes into what comes before and after: the survey, the design, the town hall, the registration and switching on the export. The stages, who handles each, and what makes them longer.3 min read
- 03What safety checks are required during solar panel installation?3 min read
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