Off-grid solar sizing in Portugal
What a year-round off-grid system costs you in 3 cities, sized against the worst month rather than the annual average.
| City | Annual per kW | Worst month | Array for 3 kWh/day | Seasonal swing |
|---|---|---|---|---|
| Lisbon | 1,579 kWh | December | 1.41 kW | 1.9× |
| Porto | 1,508 kWh | December | 1.49 kW | 1.9× |
| Braga | 1,403 kWh | December | 1.62 kW | 2.0× |
Panel angles matter as much as panel count. Solar panel angles in Portugal →