Veyangoda, Western Province, Sri Lanka, situated at latitude 7.1503 and longitude 80.058, presents a favorable location for solar PV energy generation throughout the year. This tropical setting benefits from consistent sunlight, with seasons primarily characterized by wet and dry periods rather than significant temperature variations.

The solar energy potential in Veyangoda demonstrates relatively stable output across all seasons. Spring emerges as the most productive period, with an average daily output of 6.25 kWh per kW of installed solar capacity. Summer follows closely at 5.90 kWh/day, while winter maintains a strong performance at 5.68 kWh/day. Autumn experiences a slight dip but still delivers a respectable 5.09 kWh/day.

Optimal Panel Placement

For fixed panel installations in Veyangoda, Western Province, the ideal tilt angle to maximize year-round solar production is 6 degrees facing South. This slight tilt helps optimize energy capture throughout the year, accounting for the location's proximity to the equator and the Earth's elliptical orbit.

Environmental Considerations

While Veyangoda's climate is generally conducive to solar energy production, there are some environmental factors to consider:

• Monsoon seasons: Sri Lanka experiences two monsoon seasons, which can lead to increased cloud cover and rainfall, potentially reducing solar output.
• High humidity: The tropical climate means high humidity levels, which may affect panel efficiency and require more frequent cleaning.

To mitigate these challenges, several preventative measures can be implemented during solar installation:

1. Use high-quality, weather-resistant panels designed for tropical climates.

2. Install a robust mounting system to withstand potential strong winds during monsoon seasons.

3. Implement a regular cleaning schedule to prevent dust and humidity-related buildup on panels.

4. Consider incorporating a battery storage system to balance energy production during periods of reduced sunlight.

Overall, Veyangoda's location offers excellent potential for year-round solar energy generation, with only minor seasonal fluctuations. By addressing the environmental factors through proper installation and maintenance practices, solar PV systems in this area can operate efficiently and provide a reliable source of renewable energy.

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 109 locations across Sri Lanka. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Sri Lanka by location

Solar output per kW of installed solar PV by season in Veyangoda

Seasonal solar PV output for Latitude: 7.1503, Longitude: 80.058 (Veyangoda, Sri Lanka), 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 6° South in Veyangoda, Sri Lanka

To maximize your solar PV system's energy output in Veyangoda, Sri Lanka (Lat/Long 7.1503, 80.058) throughout the year, you should tilt your panels at an angle of 6° 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 Veyangoda, Sri Lanka

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 Veyangoda, Sri Lanka. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 6° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
9° North in Summer	13° South in Autumn	22° South in Winter	1° 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 Veyangoda, Sri Lanka

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 Veyangoda, Sri Lanka.

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 Veyangoda, Sri Lanka

The area surrounding Veyangoda, Sri Lanka, is characterized by a diverse and gently undulating topography typical of the country's western region. Located in the Gampaha District of the Western Province, Veyangoda sits at an elevation of approximately 30 meters above sea level. The landscape in this area is a mix of low-lying plains and gentle hills, with occasional rocky outcrops dotting the terrain. To the west of Veyangoda, the land gradually slopes towards the coastal plains, which are predominantly flat and low-lying. This area is characterized by lush vegetation, including paddy fields, coconut plantations, and small patches of tropical forests. As one moves eastward from Veyangoda, the terrain becomes slightly more elevated and hilly, with the land rising towards the central highlands of Sri Lanka. The region around Veyangoda is crisscrossed by numerous small streams and rivers, which contribute to the area's fertility and support local agriculture. These water bodies have carved shallow valleys and created natural drainage patterns throughout the landscape.

Suitability for Large-Scale Solar PV

When considering areas nearby Veyangoda for large-scale solar photovoltaic (PV) installations, several factors come into play. The most suitable locations would be those that offer a combination of favorable topography, ample sunlight exposure, and minimal environmental impact. The gently sloping plains to the west and southwest of Veyangoda present promising opportunities for solar PV development. These areas typically have fewer obstructions to sunlight and offer larger, contiguous parcels of land that could accommodate extensive solar arrays. The relatively flat terrain in these locations would also minimize the need for extensive land preparation, potentially reducing installation costs. Areas to the north and northeast of Veyangoda, where the landscape transitions to slightly higher elevations, might also be suitable for solar PV projects. These elevated sites could benefit from increased exposure to sunlight throughout the day, potentially maximizing energy generation. However, care should be taken to avoid areas with significant slopes or unstable soil conditions. It's important to note that while the topography around Veyangoda offers potential for solar PV development, other factors such as land ownership, proximity to power infrastructure, and environmental considerations would need to be carefully evaluated before determining the most suitable locations for large-scale solar installations. Additionally, areas currently used for agriculture or containing sensitive ecosystems should be avoided to minimize negative impacts on local communities and biodiversity.

Sri Lanka solar PV Stats as a country

Sri Lanka ranks 55th in the world for cumulative solar PV capacity, with 434 total MW's of solar PV installed. Each year Sri Lanka is generating 20 Watts from solar PV per capita (Sri Lanka ranks 66th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Sri Lanka?

Yes, there are incentives for businesses wanting to install solar energy in Sri Lanka. The government of Sri Lanka has implemented a number of policies and programs to promote the use of renewable energy sources such as solar power. These include tax exemptions, subsidies, and other financial incentives for businesses that install solar systems. Additionally, the government has set up a Renewable Energy Fund which provides grants to support research and development activities related to renewable energy technologies.

Do you have more up to date information than this on incentives towards solar PV projects in Sri Lanka? 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.