Peak Sun Hours in Denizli, Denizli, Turkey
- Solar zone
- Zone 3 (good)
- Best month
- July (7.8)
- Worst month
- December (2.1)
- Climate
- Temperate · 14.0°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.32 | 3.31 | 3.38 | 1.05 | 2.5 | 80 |
| Feb | 3.10 | 4.41 | 3.53 | 1.44 | 4.2 | 76 |
| Mar | 4.38 | 5.85 | 4.36 | 1.87 | 7.9 | 69 |
| Apr | 5.62 | 7.21 | 4.81 | 2.38 | 12.1 | 64 |
| May | 6.63 | 8.10 | 5.66 | 2.57 | 17.2 | 59 |
| Jun | 7.59 | 8.54 | 7.45 | 2.29 | 21.9 | 51 |
| Jul | 7.83 | 8.28 | 8.53 | 1.85 | 25.8 | 42 |
| Aug | 6.94 | 7.39 | 7.64 | 1.77 | 26.0 | 40 |
| Sep | 5.68 | 6.22 | 6.78 | 1.56 | 21.5 | 45 |
| Oct | 4.07 | 4.75 | 5.31 | 1.35 | 15.4 | 56 |
| Nov | 2.85 | 3.52 | 4.44 | 1.03 | 9.2 | 67 |
| Dec | 2.09 | 2.94 | 3.46 | 0.88 | 4.5 | 76 |
GHI, Clear-sky, DNI, DHI in kWh/m²/day. Data: NASA POWER climatology (long-term monthly averages).
Off-grid calculator
Add appliances
- Add an appliance to size a system.
Sizing
- Daily load
- 0.00 kWh
- Panel wattage
- 0 W
- Panel count (400W modules)
- 0
- Battery bank
- 0.0 kWh
Sizing against worst-month PSH of 2.09 kWh/m²/day, 0.77 system efficiency.
About solar in Denizli
Denizli, Turkey has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.93 kWh/m²/day, a good solar resource by global standards.
The strongest month in Denizli is July (summer) at 7.83 kWh/m²/day, and the weakest is December (winter) at 2.09 kWh/m²/day. When sizing a year-round off-grid system, it's standard practice to design against the December value rather than the annual average — otherwise the battery bank runs low during the darkest weeks.
Denizli's solar conditions are well within the range where off-grid PV is a straightforward engineering exercise with standard-sized arrays and lithium batteries.
FAQ
- What are the peak sun hours in Denizli?
- Denizli averages 4.93 peak sun hours per day annually, ranging from 2.09 in December to 7.83 in July.
- How many solar panels do I need in Denizli?
- Panel count depends on your daily load. At Denizli's annual average of 4.93 kWh/m²/day, a 5 kWh/day load needs roughly 4 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Denizli?
- Sizing against Denizli's worst month (December, 2.09 kWh/m²/day) with 2 days of autonomy at 80% depth of discharge, a 5 kWh/day load needs about a 12.5 kWh battery bank.
- How does Denizli's solar resource compare globally?
- Denizli sits in solar zone 3 out of 5 (where 5 is strongest) at 4.93 kWh/m²/day — good by global standards. For reference, top-tier desert sites average ~6.5 and high-latitude cities around 2.5 kWh/m²/day.
- How much does winter reduce solar output in Denizli?
- Denizli's worst month (December) delivers 2.09 kWh/m²/day — about 27% of the summer peak of 7.83. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Denizli's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Denizli's 4.93 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Denizli?
- At Denizli's latitude (38°), a fixed tilt near 38° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.