Madeira
Solar panels in Calheta: what they produce
According to PVGIS, each kWp of panels facing south produces 1,550 kWh a year in Calheta, 2% above the median of Portugal's 308 municipalities (1,514 kWh). A 4 kWp system produces about 6,200 kWh a year here.
Calheta in numbers
kWh per kWp a year, facing south
At 35° tilt with 14% losses, from SARAH2 satellite data for 2005 to 2020 (PVGIS).
of Portugal's 308 municipalities
In Madeira, it ranks 5th of 11.
kWh per kWp in August, the best month
In December, the worst, 1 kWp produces 95 kWh, 62% of the best month. An off grid system has to be sized for that month.
less on a roof facing east
West, 19% less; south east, 5% less; south west, 6% less.
A 4 kWp system in Calheta
- Yearly production
- 6,200 kWh
- Used at home (30%, the typical share)
- €450 a year
- Sold as surplus
- €220 a year
- Indicative price, turnkey, with VAT
- €5,500 to €7,500
- Payback
- 8 to 11 years
What you use saves about €0.24 per kWh; the surplus sells at about €0.05.
Run the numbers with your own billRules and the grid
The law is the same as on the mainland, Decreto‑Lei n.º 15/2022, but registration goes to the regional government's services rather than DGEG (article 264). The grid belongs to EEM in Madeira.
On the map
Neighbouring municipalities
| Municipality | Distance between seats | kWh per kWp |
|---|---|---|
| Ponta do Sol | 8 km | 1,632 |
| Ribeira Brava | 12 km | 1,579 |
| São Vicente | 14 km | 1,283 |
| Porto Moniz | 15 km | 1,137 |
| Câmara de Lobos | 21 km | 1,557 |
| Funchal | 25 km | 1,563 |
Sources
- PVGIS, European Commission Joint Research Centre (yields per municipality, 1 kWp, 35° tilt, 14% losses, SARAH2 data for 2005 to 2020)
- Direção-Geral do Território, CAOP 2025 (official boundaries of the 308 municipalities)
- 4gnews, home solar prices in 2026 from DGEG certified installers in Lisbon, Porto and Coimbra, turnkey, 23% VAT included, 30 July 2026
- Eurostat, household electricity prices (nrg_pc_204), Portugal, 2,500 to 4,999 kWh a year, all taxes included, second half of 2025
- Fraunhofer ISE, Recent Facts about Photovoltaics in Germany, version of 26 August 2026 (self consumption without and with a battery)
- Portal Energia, the surplus regime in 2026 (fixed price around €0.05 per kWh)
- Decreto‑Lei n.º 15/2022, Diário da República (article 264: in the Azores and Madeira the regional services do what DGEG does on the mainland)
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