31 places · sun position · panel angle
Solar data for Tajikistan
Across the 31 places in Tajikistan the best fixed tilt for solar panels runs from 31° in Dushanbe to 33° in Isfara, and flat ground gets 4.6 to 5.1 peak sun hours a day. Every number is computed for each place.
Solar power in Tajikistan at a glance
Averages over 31 places with climate data, for a fixed array facing south.
- 4.60–4.70
- 4.70–4.80
- 4.80–4.91
- 4.91–5.01
- 5.01–5.11
Peak sun hours a day on flat ground. Each dot is one place.
The sunniest place in Tajikistan is Zarhalol (Khatlon Province) with 5.11 peak sun hours a day on flat ground; the least sunny is Muchun with 4.60. A 1 kWp array at its best angle makes from 1,590 kWh a year in Istiqlol to 1,744 kWh in Ishqoshim — 1,633 kWh on average.
The best year-round tilt runs from 31° in Dushanbe to 33° in Isfara. Off-grid systems are sized for the darkest month and do better steeper, at 64° on average: at 70° that month brings 2.68 kWh per kWp a day in Istiqlol and 3.35 kWh in Ishqoshim.
Size an off-grid system or open any place below for its sun path, monthly table and tilt curve.
Sunniest places in Tajikistan
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 | Zarhalol | Khatlon Province | 5.11 | 1,696 | 31° |
| 2 | Kolkhozobod | Khatlon Province | 5.06 | 1,682 | 31° |
| 3 | Moskovskiy | Khatlon Province | 5.05 | 1,682 | 31° |
| 3 | Farkhor | Khatlon Province | 5.05 | 1,678 | 31° |
| 5 | Chubek | Khatlon Province | 5.01 | 1,679 | 31° |
| 6 | Vakhsh | Khatlon Province | 5.00 | 1,670 | 31° |
| 7 | Hulbuk | Khatlon Province | 4.95 | 1,665 | 31° |
| 7 | Bokhtar | Khatlon Province | 4.95 | 1,660 | 31° |
| 9 | Kŭlob | Khatlon Province | 4.92 | 1,666 | 31° |
| 10 | Ishqoshim | Gorno-Badakhshan | 4.89 | 1,744 | 32° |
Least sunny places in Tajikistan
| Rank | Place | Region | Sun hours/day | kWh per kWp a year | Best tilt |
|---|---|---|---|---|---|
| 26 | Shahriston | Sughd | 4.63 | 1,616 | 33° |
| 28 | Istaravshan | Sughd | 4.62 | 1,606 | 33° |
| 28 | Proletar | Sughd | 4.62 | 1,593 | 32° |
| 30 | Dalyoni Bolo | Sughd | 4.61 | 1,610 | 32° |
| 31 | Muchun | Sughd | 4.60 | 1,602 | 32° |
Solar by region in Tajikistan
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 |
|---|---|---|---|---|---|---|
| Khatlon Province | 12 | 4.96 | 1,664 | 31° | 3.08 kWh | Zarhalol |
| Gorno-Badakhshan | 2 | 4.77 | 1,700 | 32° | 3.16 kWh | Ishqoshim |
| Dushanbe | 2 | 4.70 | 1,606 | 31° | 3.02 kWh | Boshkengash |
| Republican Subordination | 3 | 4.69 | 1,601 | 31° | 2.99 kWh | Vahdat |
| Sughd | 12 | 4.64 | 1,604 | 32° | 2.97 kWh | Panjakent |
Largest places in Tajikistan at a glance
| Place | Latitude | Best tilt | Off-grid tilt | Sun hours/day (flat) |
|---|---|---|---|---|
| Dushanbe | 38.5° N | 31° | 65° | 4.69 |
| Isfara | 40.1° N | 33° | 70° | 4.63 |
| Istaravshan | 39.9° N | 33° | 70° | 4.62 |
| Kŭlob | 37.9° N | 31° | 61° | 4.92 |
| Konibodom | 40.3° N | 33° | 66° | 4.66 |
| Khujand | 40.3° N | 32° | 66° | 4.65 |
| Bokhtar | 37.8° N | 31° | 62° | 4.95 |
| Qayroqqum | 40.3° N | 32° | 66° | 4.64 |
| Vahdat | 38.6° N | 31° | 65° | 4.70 |
| Tursunzoda | 38.5° N | 31° | 65° | 4.68 |
| Buston | 40.2° N | 32° | 66° | 4.64 |
| Panjakent | 39.5° N | 31° | 62° | 4.68 |
| Zarhalol | 37.5° N | 31° | 62° | 5.11 |
| Khorugh | 37.5° N | 32° | 57° | 4.65 |
| Muchun | 39.9° N | 32° | 70° | 4.60 |
| Ishqoshim | 36.7° N | 32° | 56° | 4.89 |
| Hisor | 38.5° N | 31° | 65° | 4.68 |
| Boshkengash | 38.5° N | 31° | 65° | 4.71 |
| Dalyoni Bolo | 39.7° N | 32° | 68° | 4.61 |
| Shahriston | 39.8° N | 33° | 70° | 4.63 |
Daylight and clock time in Tajikistan
In Istiqlol (40.6° N), the northernmost place, the longest day of the year lasts 15 h 05 min and the shortest 9 h 16 min; in Ishqoshim (36.7° N), the southernmost, 14 h 41 min and 9 h 39 min. Tajikistan does not use daylight saving time: the clocks stay the same all year.
| Time zone | Places | UTC offset | Clocks change in 2026 |
|---|---|---|---|
| Asia/Dushanbe | 31 | UTC+5 | no daylight saving time |