Solar panels in Valencia

Modelled output of a 6 kWp system at 35° facing south (towards the equator), from PVGIS climate data (PVGIS-SARAH3, 2005 to 2023).

• Best month: July (940 kWh). Weakest: December (616 kWh), a 1.5x difference.
• May, July, August produce 29.4% of the year; February, November, December produce 20.2%.
• Year-to-year variation: about 285 kWh (3.0%, one standard deviation).
• Sunlight reaching the panels: 2,090 kWh per m² a year.

Rules set by the city or its region, on top of the national scheme. Each one was checked against the official source on the date shown.

• City of València

  IBI rebate for solar panels

  València's property tax (IBI) ordinance, applicable from 1 January 2026, gives a 50% rebate for mainly residential buildings with solar systems (25% for other uses). The number of years depends on cadastral value, from 10 years up to 75,000 EUR down to none above 250,000 EUR, and the total rebate is capped at 20% of the installation cost including VAT.

  Source: Ajuntament de València, Regidoria d'Hisenda, 1.1 Ordenanza fiscal reguladora del impuesto sobre bienes inmuebles (aplicable a partir de 01.01.2026) (checked 2026-09-25)

• City of València

  ICIO construction tax rebate for solar

  València's construction tax (ICIO) ordinance gives a 95% rebate for works that install solar thermal or PV systems, provided the systems are approved by the competent authority and are not legally mandatory.

  Source: Ajuntament de València, Regidoria d'Hisenda, 1.5 Ordenanza reguladora del impuesto sobre construcciones, instalaciones y obras (aplicable a partir de 01.01.2026) (checked 2026-09-25)

Valencia ranks 2 of 4 for yield among the cities we model in Spain, and 5 of 41 across every country on Solar Figures. Within one country the prices are the same, so a payback gap between these cities comes from sunshine alone.

Closest yield abroad: Marseille (1,563 kWh per kWp), Delhi (1,552 kWh per kWp), Perth (1,618 kWh per kWp).

Power you use yourself is worth the retail price (€0.21 per kWh); power you export earns €0.06. So the share you use at home, by running appliances in daylight or adding a battery, changes the payback. The system cost stays the same in every row (a battery would add to it).

• Net system cost after incentives: €6,480 for 6 kWp.
• Incentive modelled: €720 (IRPF energy-efficiency deduction, modelled at a conservative 10% (the 40% band, base max 7,500 EUR, applies only with an A/B energy rating or >=30% non-renewable primary-energy cut)).
• 25-year net savings at our default: €24,426.

At latitude 39.47°N, PVGIS finds the fixed tilt and direction that maximise yearly output. Our figures use a common 35° roof; the table shows what the optimum adds.

The optimum adds 0.1% a year over the standard roof in Valencia. Most of a roof's value comes from its direction: a roof facing away from the equator loses far more than a few degrees of tilt.