Vinh, Nghệ An Province, Vietnam, located at latitude 18.6728 and longitude 105.6963, offers a promising environment for solar energy generation throughout the year. This tropical location experiences consistent sunlight, with seasons characterized more by wet and dry periods rather than traditional temperature-based seasons.

Seasonal Solar Performance

Solar PV systems in Vinh demonstrate varying levels of electricity output across the meteorological seasons: Summer sees the highest production at 5.91 kWh per day for each kW of installed capacity. Spring follows with 4.93 kWh/day, while autumn and winter show lower outputs of 3.70 kWh/day and 3.46 kWh/day, respectively. These figures indicate that Vinh experiences its peak solar potential during the summer months, with spring also offering significant energy generation opportunities. While autumn and winter show reduced output, they still provide a reasonable amount of solar energy, making year-round solar production viable in this location.

Optimal Panel Tilt

For fixed panel installations in Vinh, Nghệ An Province, the ideal tilt angle to maximize year-round solar production is 15 degrees facing South. This angle has been calculated to optimize energy capture across all seasons, taking into account the location's specific latitude and solar elevation angles throughout the year.

Environmental Considerations

While Vinh's tropical climate is generally favorable for solar energy production, there are some environmental factors to consider: 1. Rainfall: The region experiences a monsoon season, typically from September to December, which could temporarily reduce solar output due to cloud cover and precipitation. 2. Humidity: High humidity levels, common in tropical areas, may slightly decrease panel efficiency and potentially lead to faster degradation of equipment if not properly maintained. To mitigate these factors, consider the following preventative measures: - Install panels with anti-reflective coatings to improve performance in high-humidity conditions. - Implement a regular cleaning schedule to remove any dirt or debris that may accumulate during rainy periods. - Use corrosion-resistant mounting hardware to withstand the humid environment. - Consider a slight increase in tilt angle during the rainy season to promote self-cleaning of panels. By addressing these environmental factors, solar installations in Vinh can maintain optimal performance and longevity, taking full advantage of the location's abundant solar resources 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 Vinh

Seasonal solar PV output for Latitude: 18.6728, Longitude: 105.6963 (Vinh, 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 15° South in Vinh, Vietnam

To maximize your solar PV system's energy output in Vinh, Vietnam (Lat/Long 18.6728, 105.6963) throughout the year, you should tilt your panels at an angle of 15° 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 Vinh, 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 Vinh, Vietnam. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 15° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
3° South in Summer	24° South in Autumn	34° South in Winter	11° 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 Vinh, 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 Vinh, 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 Vinh, Vietnam

The topography around Vinh, Vietnam is quite diverse and interesting. Vinh is located in the North Central Coast region of Vietnam, nestled between the South China Sea to the east and the Annamite Mountains to the west. The city itself sits on a relatively flat coastal plain, with elevations generally below 10 meters above sea level.

As you move inland from Vinh, the terrain gradually becomes more hilly and eventually mountainous. To the west and northwest, the landscape rises into the foothills of the Annamite Mountains, with elevations increasing to several hundred meters. These hills are often covered in lush forests and feature numerous streams and rivers that flow down towards the coast.

To the south and southwest of Vinh, you'll find a mix of rolling hills and flat agricultural land. This area is part of the fertile Red River Delta region, known for its rice paddies and other crops. The terrain here is generally less rugged than the areas to the west, with gentler slopes and broader valleys.

For large-scale solar PV installations, the most suitable areas near Vinh would likely be found in the flatter regions to the south and east of the city. These areas offer several advantages for solar development:

1. Flat or gently sloping terrain, which makes construction and maintenance easier
2. Proximity to existing infrastructure and the power grid
3. Less forest cover, reducing the need for land clearing
4. Good solar exposure due to the lack of tall mountains or other obstructions

Specifically, the coastal plains stretching south from Vinh towards Ha Tinh province could be ideal locations for solar farms. These areas receive ample sunlight and have large open spaces that could accommodate extensive solar panel arrays. Additionally, some of the lower hills and plateaus in the region might also be suitable, as long as they have good southern exposure and are not too steep.

However, it's important to note that any large-scale solar development would need to carefully consider environmental impacts, land use regulations, and the potential effects on local agriculture. The region's vulnerability to typhoons and flooding should also be taken into account when planning solar installations in this area.

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

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