23 places · sun position · panel angle
Solar data for the Republic of the Congo
Across the 23 places in the Republic of the Congo the best fixed tilt for solar panels runs from 1° in Owando to 5° in Mindouli, and flat ground gets 3.9 to 4.9 peak sun hours a day. Every number is computed for each place.
Solar power in the Republic of the Congo at a glance
Averages over 23 places with climate data, for a fixed array facing the equator.
- 3.94–4.14
- 4.14–4.33
- 4.33–4.52
- 4.52–4.72
- 4.72–4.91
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest places in the Republic of the Congo, with 4.91 peak sun hours a day on flat ground, are Mindouli and one other place; the least sunny is Mossendjo with 3.94. A 1 kWp array at its best angle makes from 1,145 kWh a year in Dolisie to 1,427 kWh in Mindouli — 1,280 kWh on average.
The best year-round tilt runs from 1° in Owando to 5° in Mindouli. Off-grid systems are sized for the darkest month and do better steeper, at 5° on average: at 70° that month brings 1.08 kWh per kWp a day in Impfondo and 1.20 kWh in Loutété.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in the Republic of the Congo
Ranked by peak sun hours on flat ground: the yearly average of a day's sunshine energy (NASA POWER climatology). Output: 1 kWp at its best year-round angle.
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 1 | Mindouli | Likouala | 4.91 | 1,427 | 5° |
| 1 | Bétou | Likouala | 4.91 | 1,425 | 5° |
| 3 | Ouesso | Sangha | 4.74 | 1,377 | 3° |
| 3 | Pokola | Sangha | 4.74 | 1,377 | 3° |
| 3 | Impfondo | Likouala | 4.74 | 1,373 | 3° |
| 6 | Gamboma | Plateaux | 4.71 | 1,369 | 2° |
| 6 | Oyo | Cuvette | 4.71 | 1,367 | 2° |
| 8 | Makoua | Cuvette | 4.70 | 1,366 | 1° |
| 9 | Owando | Cuvette | 4.67 | 1,355 | 1° |
| 10 | Mossaka | Cuvette | 4.66 | 1,350 | 1° |
Least sunny places in the Republic of the Congo
Solar by region in the Republic of the Congo
Averages of the places in each region, sunniest first. Darkest month: what 1 kWp of off-grid panels at 70° makes a day in the worst month of the year.
| Region | Places | Sun hours/day | kWh per kWp a year | Best tilt | Darkest month at 70° | Sunniest place |
|---|---|---|---|---|---|---|
| Likouala | 3 | 4.85 | 1,408 | 4° | 1.11 kWh | Mindouli |
| Sangha | 2 | 4.74 | 1,377 | 3° | 1.11 kWh | Ouesso |
| Cuvette | 4 | 4.69 | 1,359 | 1° | 1.13 kWh | Oyo |
| Plateaux | 2 | 4.59 | 1,336 | 3° | 1.14 kWh | Gamboma |
| Brazzaville | 1 | 4.45 | 1,298 | 4° | 1.18 kWh | Brazzaville |
| Pointe-Noire | 2 | 4.19 | 1,218 | 4° | 1.15 kWh | Pointe-Noire |
| Bouenza | 6 | 4.11 | 1,193 | 3° | 1.19 kWh | Loutété |
| Lékoumou | 1 | 4.00 | 1,161 | 2° | 1.19 kWh | Sibiti |
| Niari | 2 | 3.94 | 1,146 | 3° | 1.18 kWh | Dolisie |
Largest places in the Republic of the Congo at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Brazzaville | 4.3° S | 4° | 9° | 4.45 |
| Pointe-Noire | 4.8° S | 4° | 7° | 4.20 |
| Dolisie | 4.2° S | 3° | 7° | 3.95 |
| Nkayi | 4.2° S | 3° | 7° | 4.06 |
| Kayes | 4.2° S | 3° | 7° | 4.07 |
| Impfondo | 1.6° N | 3° | 0° | 4.74 |
| Ouesso | 1.6° N | 3° | 0° | 4.74 |
| Owando | 0.5° S | 1° | 12° | 4.67 |
| Sibiti | 3.7° S | 2° | 6° | 4.00 |
| Loutété | 4.3° S | 3° | 7° | 4.18 |
| Bouansa | 4.2° S | 3° | 7° | 4.15 |
| Gamboma | 1.9° S | 2° | 2° | 4.71 |
| Loandjili | 4.8° S | 4° | 7° | 4.19 |
| Mossaka | 1.2° S | 1° | 6° | 4.66 |
| Mindouli | 3.1° N | 5° | 0° | 4.91 |
| Oyo | 1.2° S | 2° | 5° | 4.71 |
| Makoua | 0.0° N | 1° | 0° | 4.70 |
| Loudima | 4.1° S | 3° | 7° | 4.02 |
| Mossendjo | 2.9° S | 2° | 6° | 3.94 |
| Mouyondzi | 4.0° S | 3° | 7° | 4.15 |
Daylight and clock time in the Republic of the Congo
In Mindouli (3.1° N), the northernmost place, the longest day of the year lasts 12 h 18 min and the shortest 11 h 57 min; in Pointe-Noire (4.8° S), the southernmost, 12 h 24 min and 11 h 51 min. The Republic of the Congo does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Africa/Brazzaville | 23 | UTC+1 | no daylight saving time |