Peak Sun Hours in Shijiazhuang, Hebei, China
- Solar zone
- Zone 3 (good)
- Best month
- May (6.0)
- Worst month
- December (2.3)
- Climate
- Temperate · 13.7°C
Monthly solar breakdown
| Month | GHI | Clear-sky | DNI | DHI | Temp °C | Humid % |
|---|---|---|---|---|---|---|
| Jan | 2.52 | 2.98 | 3.88 | 1.08 | -2.4 | 54 |
| Feb | 3.21 | 3.90 | 3.92 | 1.38 | 0.9 | 53 |
| Mar | 4.59 | 5.35 | 4.76 | 1.83 | 7.9 | 43 |
| Apr | 5.41 | 6.56 | 4.59 | 2.34 | 15.6 | 40 |
| May | 5.97 | 7.33 | 4.60 | 2.61 | 22.4 | 40 |
| Jun | 5.41 | 7.03 | 3.21 | 2.77 | 26.8 | 48 |
| Jul | 4.78 | 6.67 | 2.51 | 2.61 | 28.2 | 61 |
| Aug | 4.61 | 6.22 | 2.92 | 2.35 | 26.1 | 66 |
| Sep | 4.12 | 5.34 | 3.49 | 1.84 | 20.9 | 63 |
| Oct | 3.40 | 4.11 | 3.87 | 1.36 | 14.1 | 58 |
| Nov | 2.65 | 3.12 | 3.96 | 1.01 | 5.4 | 57 |
| Dec | 2.32 | 2.68 | 4.22 | 0.86 | -1.1 | 54 |
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 2.32 kWh/m²/day, 0.77 system efficiency.
About solar in Shijiazhuang
Shijiazhuang, China has a temperate climate with meaningful seasonal variation in solar resource. Its annual peak sun hours average 4.08 kWh/m²/day, a good solar resource by global standards.
The strongest month in Shijiazhuang is May (spring) at 5.97 kWh/m²/day, and the weakest is December (winter) at 2.32 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.
Shijiazhuang'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 Shijiazhuang?
- Shijiazhuang averages 4.08 peak sun hours per day annually, ranging from 2.32 in December to 5.97 in May.
- How many solar panels do I need in Shijiazhuang?
- Panel count depends on your daily load. At Shijiazhuang's annual average of 4.08 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 Shijiazhuang?
- Sizing against Shijiazhuang's worst month (December, 2.32 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 Shijiazhuang's solar resource compare globally?
- Shijiazhuang sits in solar zone 3 out of 5 (where 5 is strongest) at 4.08 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 Shijiazhuang?
- Shijiazhuang's worst month (December) delivers 2.32 kWh/m²/day — about 39% of the summer peak of 5.97. Off-grid systems here typically oversize 1.5–2× or pair with a backup source.
- Do cloudy days significantly affect Shijiazhuang's solar?
- Partly. Diffuse light still produces 10–25% of clear-sky output. Shijiazhuang's 4.08 kWh/m²/day already reflects average cloudiness, so no further derating is needed for sizing.
- What panel tilt works best in Shijiazhuang?
- At Shijiazhuang's latitude (38°), a fixed tilt near 38° balances year-round yield. Winter-heavy loads favor latitude + 15°; summer-heavy, latitude − 15°.