Solar panels in Madrid
PVGIS climate data puts Madrid at roughly 1,548 kWh per kWp each year, so a typical 6 kWp roof makes around 9,289 kWh. Madrid's property tax (IBI) offers a 50% rebate for five tax years on homes and other buildings with solar systems, counted from the year after the installation is entered in the official register, if requested in the same year as that registration. Two verified local rules and their sources are listed below. On our model, the system saves about EUR 966 in year one and pays back in 7.1 years. Madrid ranks 3rd of the 4 cities we model in Spain for yield. Seville gets 1,597 kWh per kWp.
Month by month in Madrid
Modelled output of a 6 kWp system at 35° facing south (towards the equator), from PVGIS climate data (PVGIS-SARAH3, 2005 to 2023).
| Month | kWh | Share of year |
|---|---|---|
| January | 623 | 6.7% |
| February | 652 | 7.0% |
| March | 793 | 8.5% |
| April | 814 | 8.8% |
| May | 880 | 9.5% |
| June | 885 | 9.5% |
| July | 966 | 10.4% |
| August | 945 | 10.2% |
| September | 835 | 9.0% |
| October | 724 | 7.8% |
| November | 584 | 6.3% |
| December | 588 | 6.3% |
- Best month: July (966 kWh). Weakest: November (584 kWh), a 1.7x difference.
- June, July, August produce 30.1% of the year; January, November, December produce 19.3%.
- Year-to-year variation: about 285 kWh (3.1%, one standard deviation).
- Sunlight reaching the panels: 2,093 kWh per m² a year.
Local rules and support in Madrid
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 Madrid
IBI rebate for solar panels
Madrid's property tax (IBI) offers a 50% rebate for five tax years on homes and other buildings with solar systems, counted from the year after the installation is entered in the official register, if requested in the same year as that registration. Adding battery storage extends the rebate by two more years; installations that are legally mandatory do not qualify.
Source: Agencia Tributaria Madrid (Ayuntamiento de Madrid), Bonificación por la instalación de sistemas de aprovechamiento de la energía solar. IBI. Declaración responsable. Información (checked 2026-09-25)
- City of Madrid
ICIO construction tax rebate for solar
Madrid's construction tax (ICIO) has a 95% rebate for works that install solar systems for self-consumption.
Source: Agencia Tributaria Madrid (Ayuntamiento de Madrid), Impuesto sobre Construcciones, Instalaciones y Obras (ICIO). Bonificaciones (checked 2026-09-25)
How Madrid compares
Madrid ranks 3 of 4 for yield among the cities we model in Spain, and 8 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.
| City | kWh per kWp / yr | Payback (EUR) |
|---|---|---|
| Seville | 1,597 | 6.8 yrs |
| Valencia | 1,563 | 7.0 yrs |
| Madrid | 1,548 | 7.1 yrs |
| Barcelona | 1,508 | 7.3 yrs |
| National reference point (country page) | 1,549 | 7.1 yrs |
Closest yield abroad: Delhi (1,552 kWh per kWp), Marseille (1,563 kWh per kWp), Sydney (1,502 kWh per kWp).
What moves the payback in Madrid
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).
| Used at home | Year-1 savings | Payback |
|---|---|---|
| 20% | €828 | 8.4 yrs |
| 30% (our default) | €966 | 7.1 yrs |
| 50% | €1,241 | 5.4 yrs |
| 70% | €1,517 | 4.4 yrs |
- 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: €24,162.
Best panel angle in Madrid
At latitude 40.42°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.
| Setup | Tilt | Facing | kWh per kWp / yr |
|---|---|---|---|
| Standard roof (used on this page) | 35° | south | 1,548 |
| PVGIS optimum | 37° | south (175°) | 1,549 |
The optimum adds 0.1% a year over the standard roof in Madrid. 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.
See the full Spain picture on our Spain solar page, or the national incentives in our Spain solar guide.
Sources and method
Figures computed 2026-09-25 for a 6 kWp system, 35° tilt, 14% system losses, terrain shading on. An estimate, not a quote: your installer's quote will be exact.
- PVGIS 5.3 PVcalc (PVGIS-SARAH3), European Commission JRC (checked 2026-09-25)
- Spain tariff and incentive inputs (see DATA_SOURCES.md) (checked 2026-06-21)
- Agencia Tributaria Madrid (Ayuntamiento de Madrid): Bonificación por la instalación de sistemas de aprovechamiento de la energía solar. IBI. Declaración responsable. Información (checked 2026-09-25)
- Agencia Tributaria Madrid (Ayuntamiento de Madrid): Impuesto sobre Construcciones, Instalaciones y Obras (ICIO). Bonificaciones (checked 2026-09-25)
Calculate your exact savings
Free, no sign-up. Your address gives payback, NPV, incentives and a 25-year cashflow for your roof in Madrid.
Calculate your exact savings →