In the Vietnamese market, two of the most popular types of solar panels are polycrystalline (Poly, typically dark blue) and monocrystalline (Mono, usually black). Mono panels offer superior quality and higher energy conversion efficiency but come at a higher cost compared to Poly panels.
Illustration of a 570Wp solar panel; dimensions approximately 2278mm x 1134mm x 35mm.
Depending on the brand and type, a 570Wp solar panel can vary in price. Generally, acquiring a 570Wp solar panel costs users around 2 million VND.
The question arises: with such a high-capacity solar panel, how much electricity does it generate monthly in Hanoi? How much money can be saved on electricity bills per month?
Key information to consider:
1. Solar Irradiance and Average Sunshine Hours in Vietnam
(Note: These are average figures. Actual numbers may vary depending on the year and specific region.)
Source: Vietnam Solar
2. Monthly Electricity Output of a 570Wp Solar Panel in Hanoi
To calculate the electricity output, use the following formula:
Monthly Electricity Output (kWh/month) = Panel Capacity (Wp) × Average Daily Sunshine Hours × Number of Days in Month × System Efficiency
Where:
Panel Capacity (Wp): 570 Wp (equivalent to 0.57 kWp)
Average Daily Sunshine Hours: ~4.1 hours/day, based on 365 days
System Efficiency: 0.8 (80%, accounting for losses due to temperature, wiring, and inverter)
Number of Days in Month: 30 days (average month)
Daily Electricity Output = 0.57 × 4.1 × 0.8 ≈ 1.86 kWh/day
Monthly Electricity Output = 1.86 × 30 ≈ 55.8 kWh/month
Result: A 570Wp solar panel in Hanoi produces approximately 55.8 kWh/month under average conditions. Actual output may fluctuate (50-65 kWh) depending on the season (higher in summer, lower in winter).
3. Savings
With an output of 55.8 kWh/month, this solar panel allows your household to self-generate and directly use this amount of electricity, reducing the need to purchase electricity from the EVN grid.
Depending on average or high electricity consumption, this panel can save approximately 130,000 – 170,000 VND/month (excluding VAT), equivalent to 1,560,000 – 2,040,000 VND/year.
Solar panels are photovoltaic modules made up of multiple solar cells connected at various voltage and power levels. They capture sunlight, convert it into electricity, and supply it for commercial and residential applications. Solar panels are essential components of solar power systems.
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