Peak Sun Hours in Circoiscrizione V, Piedmont, Italy
- Solar zone
- Zone 2 (moderate)
- Best month
- July (6.3)
- Worst month
- December (1.3)
- Climate
- Temperate · 11.2°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 1.58 | 2.35 | 2.91 | 0.72 | 1.2 | 70 |
| Feb | 2.33 | 3.55 | 3.28 | 1.07 | 2.3 | 68 |
| Mar | 3.38 | 5.21 | 3.61 | 1.58 | 6.3 | 67 |
| Apr | 4.36 | 6.85 | 3.94 | 2.03 | 10.4 | 69 |
| May | 5.15 | 8.05 | 3.90 | 2.54 | 14.6 | 69 |
| Jun | 6.14 | 8.48 | 4.98 | 2.77 | 19.4 | 67 |
| Jul | 6.33 | 8.17 | 5.72 | 2.55 | 21.8 | 61 |
| Aug | 5.44 | 7.11 | 5.32 | 2.16 | 21.4 | 61 |
| Sep | 4.18 | 5.58 | 4.66 | 1.71 | 16.9 | 65 |
| Oct | 2.73 | 3.89 | 3.58 | 1.23 | 11.7 | 71 |
| Nov | 1.63 | 2.57 | 2.77 | 0.76 | 6.1 | 74 |
| Dec | 1.30 | 1.99 | 2.71 | 0.59 | 1.9 | 70 |
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 1.30 kWh/m²/day, 0.77 system efficiency.
About solar in Circoiscrizione V
Circoiscrizione V, Italy has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 3.71 kWh/m²/day, a moderate solar resource by global standards.
The strongest month in Circoiscrizione V is July (summer) at 6.33 kWh/m²/day, and the weakest is December (winter) at 1.3 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.
Given the moderate resource, Circoiscrizione V installations typically oversize panels or combine solar with another source (grid, generator, hydro) for reliability.
FAQ
- What are the peak sun hours in Circoiscrizione V?
- Circoiscrizione V averages 3.71 peak sun hours per day annually, ranging from 1.3 in December to 6.33 in July.
- How many solar panels do I need in Circoiscrizione V?
- Panel count depends on your daily load. At Circoiscrizione V's annual average of 3.71 kWh/m²/day, a 5 kWh/day load needs roughly 5 × 400 W panels. Use the calculator above for your actual load.
- What size battery do I need in Circoiscrizione V?
- Sizing against Circoiscrizione V's worst month (December, 1.3 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 Circoiscrizione V's solar resource compare globally?
- Circoiscrizione V sits in solar zone 2 out of 5 (where 5 is strongest) at 3.71 kWh/m²/day — moderate 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 Circoiscrizione V?
- Circoiscrizione V's worst month (December) delivers 1.3 kWh/m²/day — about 21% of the summer peak of 6.33. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Circoiscrizione V's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Circoiscrizione V's 3.71 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Circoiscrizione V?
- At Circoiscrizione V's latitude (45°), a fixed tilt near 45° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.