The definitive source for solar energy statistics across Marbella, Estepona, Mijas and the Costa del Sol. Updated for 2026.
Free to cite. Link back to mitechosolar.com/solar-data when referencing.
Estimated annual solar production data for Costa del Sol municipalities.
| Location | kWh/kWp/year | Sun hours/yr | Avg. system |
|---|---|---|---|
| Marbella | 1,750 | 2,850 | 8.5 kWp |
| Estepona | 1,720 | 2,800 | 7.2 kWp |
| Mijas | 1,700 | 2,780 | 6.8 kWp |
| Benahavís | 1,780 | 2,870 | 12.0 kWp |
| Nueva Andalucía | 1,740 | 2,840 | 9.0 kWp |
| Fuengirola | 1,690 | 2,760 | 5.5 kWp |
| Benalmádena | 1,695 | 2,770 | 5.8 kWp |
| La Zagaleta | 1,790 | 2,880 | 15.0 kWp |
Source: PVGIS (EU Joint Research Centre), local municipal data, MiTechoSolar.com installation records 2023–2026.
Personal income tax deduction for self-consumption systems
Property tax reduction for 3–5 years in most municipalities
For solar with battery as one investment; applications from 22 October 2026. No storage, no support on the residential line.
Irradiation figures only help when they translate into kWh on your bill. Here is what the data on this page means for a home or business in Málaga province.
Málaga records around 2,900 sunshine hours a year, among the highest in continental Europe. Under normal conditions (south-facing roof, 15–30° tilt, no shading) output sits around 1,600–1,800 kWh per installed kWp per year, according to the European Commission's PVGIS tool.
A typical 4–6 kWp home system therefore produces roughly 6,500–10,500 kWh a year, enough to cover a large share of a household running air conditioning.
On the Málaga coast, July output can be three times December's. The local advantage is that peak demand (cooling) coincides with peak generation, unlike in northern Europe.
Two factors cut yield and should be planned for: temperature (modules lose efficiency above 25 °C cell temperature, which is why the structure is ventilated) and calima, which deposits Saharan dust and can reduce output until rain or a cleaning.
Savings depend not only on how much you produce but on how much you consume while producing. Self-consumed energy avoids the full kWh price; surplus is paid at a lower rate through the simplified compensation scheme of Royal Decree 244/2019.
That is why, for profiles with high evening use (pool, EV, air-to-water heat pump), a battery or virtual battery improves returns more than adding panels.
