3 places · sun position · panel angle
Solar data for Luxembourg
Across the 3 places in Luxembourg the best fixed tilt for solar panels is 38°, and flat ground gets 3.1 to 3.2 peak sun hours a day. Every number is computed for each place.
Solar power in Luxembourg at a glance
Averages over 3 places with climate data, for a fixed array facing south.
- 3.15 peak sun hours a day
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in Luxembourg, with 3.15 peak sun hours a day on flat ground, are Dudelange and one other place; the least sunny is Luxembourg with 3.14. A 1 kWp array at its best angle makes from 1,130 kWh a year in Luxembourg to 1,135 kWh in Dudelange — 1,133 kWh on average.
The best year-round tilt is 38° everywhere. Off-grid systems are sized for the darkest month and do better steeper, at 70° on average: at 70° that month brings 1.31 kWh per kWp a day in Luxembourg and 1.33 kWh in Esch-sur-Alzette.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Largest places in Luxembourg at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Luxembourg | 49.6° N | 38° | 70° | 3.14 |
| Esch-sur-Alzette | 49.5° N | 38° | 70° | 3.15 |
| Dudelange | 49.5° N | 38° | 70° | 3.15 |
Daylight and clock time in Luxembourg
In Luxembourg (49.6° N), the northernmost place, the longest day of the year lasts 16 h 18 min and the shortest 8 h 08 min; in Dudelange (49.5° N), the southernmost, 16 h 17 min and 8 h 09 min. The clocks change twice a year: forward on Sun 29 Mar, back on Sun 25 Oct (Europe/Luxembourg).
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Europe/Luxembourg | 3 | UTC+1, in summer UTC+2 | Forward on Sun 29 Mar, back on Sun 25 Oct |