Vĩnh Tường, Vietnam offers reasonably good conditions for solar energy generation throughout the year, though with notable seasonal variations that reflect the region's tropical climate patterns.

Seasonal Solar Performance

The location experiences significant seasonal differences in solar energy production. Summer delivers the strongest performance at 5.86 kWh per day for each kilowatt of installed solar capacity, making it the ideal time for solar generation. This peak season takes advantage of the region's intense tropical sunlight and clearer atmospheric conditions. Spring and autumn provide moderate solar output, both generating approximately 3.95 kWh per day per installed kilowatt. These transitional seasons offer consistent, reliable energy production that forms a solid foundation for year-round solar systems. Winter presents the most challenging period for solar generation, dropping to 2.97 kWh per day per kilowatt of installed capacity. Despite this reduction, the output remains substantial enough to justify year-round solar installations.

Optimal Panel Configuration

For maximum annual energy production at Vĩnh Tường, solar panels should be installed at a fixed tilt angle of 17 degrees facing south. This specific angle has been calculated to optimize total yearly output by accounting for the sun's varying position throughout the seasons and the location's latitude.

Local Factors Affecting Solar Production

Several environmental factors in Vĩnh Tường can impact solar panel performance and require careful consideration during installation:

• High humidity levels typical of tropical climates can reduce panel efficiency and accelerate corrosion of electrical components
• Monsoon rains and wet season conditions may cause temporary reductions in solar output and create challenges for system maintenance
• Dust and particulate matter can accumulate on panel surfaces, reducing light transmission and energy generation
• Extreme heat during peak summer months may cause panels to operate less efficiently than in moderate temperatures

Preventative Measures for Better Performance

To maximize solar energy production despite these challenges, several installation strategies prove effective:

• Use marine-grade wiring and corrosion-resistant mounting hardware designed for high-humidity environments
• Install panels with adequate ventilation spacing to promote air circulation and reduce heat buildup
• Design systems with appropriate drainage to prevent water accumulation during heavy rains
• Plan for regular cleaning schedules to remove dust, debris, and organic matter from panel surfaces
• Select panels with anti-reflective coatings and self-cleaning properties where possible

Overall, Vĩnh Tường represents a viable location for solar energy systems, with strong summer performance compensating for reduced winter output. Proper installation techniques and regular maintenance can help ensure optimal energy production throughout the year.

Note: The Tropics are located between 23.5° North and -23.5° South of the equator.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 160 locations across Vietnam. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Vietnam by location

Solar output per kW of installed solar PV by season in Vĩnh Tường, Vĩnh Phúc Province

Seasonal solar PV output for Latitude: 21.22, Longitude: 105.511 (Vĩnh Tường, Vĩnh Phúc Province, Vietnam), based on our analysis of 8760 hourly intervals of solar and meteorological data (one whole year) retrieved for that set of coordinates/location from NASA POWER (The Prediction of Worldwide Energy Resources) API:

 

Ideally tilt fixed solar panels 17° South in Vĩnh Tường, Vĩnh Phúc Province, Vietnam

To maximize your solar PV system's energy output in Vĩnh Tường, Vĩnh Phúc Province, Vietnam (Lat/Long 21.22, 105.511) throughout the year, you should tilt your panels at an angle of 17° South for fixed panel installations.

As the Earth revolves around the Sun each year, the maximum angle of elevation of the Sun varies by +/- 23.45 degrees from its equinox elevation angle for a particular latitude. Finding the exact optimal angle to maximise solar PV production throughout the year can be challenging, but with careful consideration of historical solar energy and meteorological data for a certain location, it can be done precisely.

We use our own calculation, which incorporates NASA solar and meteorological data for the exact Lat/Long coordinates, to determine the ideal tilt angle of a solar panel that will yield maximum annual solar output. We calculate the optimal angle for each day of the year, taking into account its contribution to the yearly total PV potential at that specific location.

Seasonally adjusted solar panel tilt angles for Vĩnh Tường, Vĩnh Phúc Province, Vietnam

If you can adjust the tilt angle of your solar PV panels, please refer to the seasonal tilt angles below for optimal solar energy production in Vĩnh Tường, Vĩnh Phúc Province, Vietnam. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 17° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
5° South in Summer	26° South in Autumn	37° South in Winter	13° South in Spring

Our recommendations take into account more than just latitude and Earth's position in its elliptical orbit around the Sun. We also incorporate historical solar and meteorological data from NASA's Prediction of Worldwide Energy Resources (POWER) API to assign a weight to each ideal angle for each day based on its historical contribution to overall solar PV potential during a specific season.

This approach allows us to provide much more accurate recommendations than relying solely on latitude, as it considers unique weather conditions in different locations sharing the same latitude worldwide.

Calculate solar panel row spacing in Vĩnh Tường, Vĩnh Phúc Province, Vietnam

We've added a feature to calculate minimum solar panel row spacing by location. Enter your panel size and orientation below to get the minimum spacing in Vĩnh Tường, Vĩnh Phúc Province, Vietnam.

Our calculation method

1. Solar Position:
   We determine the Sun's position on the Winter solstice using the location's latitude and solar declination.
2. Shadow Projection:
   We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle.
3. Minimum Spacing:
   We add the shadow length to the horizontal space occupied by tilted panels.

This approach ensures maximum space efficiency while avoiding shading during critical times, as the Winter solstice represents the worst-case scenario for shadow length.

Topography for solar PV around Vĩnh Tường, Vĩnh Phúc Province, Vietnam

Topographical Features of Vĩnh Tường Region

The area around Vĩnh Tường in Vĩnh Phúc Province sits within the Red River Delta region of northern Vietnam, characterized by predominantly flat to gently rolling terrain. This landscape represents the typical deltaic environment formed by centuries of sediment deposition from the Red River system. The elevation across most of the region remains relatively low, generally ranging from 10 to 50 meters above sea level, creating an expansive plain that extends across much of the surrounding countryside.

Agricultural land dominates the immediate vicinity, with extensive rice paddies, vegetable farms, and fruit orchards creating a patchwork of cultivated fields. These agricultural areas are interspersed with small villages, rural settlements, and connecting road networks. The terrain shows minimal elevation changes, making it naturally suitable for large-scale development projects that require substantial flat areas.

To the northwest of Vĩnh Tường, the landscape begins to transition toward the foothills of the northern Vietnamese highlands. These areas feature more pronounced topographical variation, with scattered hills and ridges that rise above the surrounding plain. However, the immediate region maintains its characteristic flatness, broken only by the meandering waterways that drain toward the Red River system.

Water Features and Drainage Patterns

The regional hydrology consists of numerous small rivers, streams, and irrigation canals that crisscross the landscape. These waterways generally flow in a southeastern direction toward the Red River, creating a network of drainage channels that serve both agricultural irrigation and flood management purposes. During the monsoon season, some of these waterways can expand significantly, temporarily inundating adjacent low-lying areas.

Seasonal flooding represents a notable characteristic of this deltaic environment, particularly in areas closest to major waterways. The timing and extent of these flood cycles follow predictable patterns linked to the regional monsoon climate, affecting land use decisions and infrastructure planning throughout the area.

Optimal Areas for Large-Scale Solar Development

The most suitable locations for extensive solar photovoltaic installations lie in the elevated areas between major waterways, where flood risk remains minimal and the terrain maintains sufficient flatness for efficient panel installation. These slightly elevated zones, typically rising 20 to 40 meters above sea level, offer the ideal combination of accessible flat land and reduced vulnerability to seasonal flooding.

Areas to the west and southwest of Vĩnh Tường present particularly favorable conditions, featuring extensive tracts of relatively flat terrain with good road access and proximity to existing electrical infrastructure. These zones benefit from their position on stable ground that remains above typical flood levels while maintaining the gentle topography essential for cost-effective solar array construction.

The agricultural areas currently used for rain-fed crops rather than irrigated rice cultivation would prove most practical for solar development, as these locations typically occupy slightly higher ground with better drainage characteristics. Such areas avoid the complex water management systems associated with rice paddies while offering the large, contiguous land parcels necessary for utility-scale solar installations.

Transportation access represents another crucial factor, with areas near existing major roads and highways providing significant advantages for construction logistics and ongoing maintenance operations. The relatively flat terrain throughout most of the region means that road access rather than topographical constraints often determines the most practical development sites.

Vietnam solar PV Stats as a country

Vietnam ranks 9th in the world for cumulative solar PV capacity, with 16,660 total MW's of solar PV installed. Each year Vietnam is generating 171 Watts from solar PV per capita (Vietnam ranks 30th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Vietnam?

Yes, there are several incentives for businesses wanting to install solar energy in Vietnam. The government has implemented a number of policies and programs to encourage the development of renewable energy sources, including solar energy. These include tax exemptions, preferential loans, and feed-in tariffs for electricity generated from solar power plants. Additionally, the government has established a Renewable Energy Development Fund to provide financial support for projects related to renewable energy sources such as solar power.

Do you have more up to date information than this on incentives towards solar PV projects in Vietnam? Please reach out to us and help us keep this information current. Thanks!

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Compare this location to others worldwide for solar PV potential

The solar PV analyses available on our website, including this one, are offered as a free service to the global community. Our aim is to provide education and aid informed decision-making regarding solar PV installations.

However, please note that these analyses are general guidance and may not meet specific project requirements. For in-depth, tailored forecasts and analysis crucial for feasibility studies or when pursuing maximum ROI from your solar projects, feel free to contact us; we offer comprehensive consulting services expressly for this purpose.

Helping you assess viability of solar PV for your site

Calculate Your Optimal Solar Panel Tilt Angle: A Comprehensive Guide

Enhance your solar panel's performance with our in-depth guide. Determine the best tilt angle using hard data, debunk common misunderstandings, and gain insight into how your specific location affects solar energy production.