Kirindiwela, Western Province, Sri Lanka, situated at 7.0443° N latitude and 80.1251° E longitude, 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.

Seasonal Solar Performance

The solar energy output in Kirindiwela demonstrates relatively stable performance across all seasons. Spring emerges as the most productive period, with an average daily output of 6.23 kWh per kW of installed solar capacity. Summer follows closely with 5.89 kWh/day, while winter maintains a strong showing at 5.71 kWh/day. Autumn experiences a slight dip but still delivers a respectable 5.09 kWh/day. This consistent year-round performance makes Kirindiwela an ideal location for solar PV installations, as it ensures a reliable energy supply throughout the year. The minimal fluctuation between seasons allows for more predictable energy production and easier system sizing.

Optimal Panel Tilt

For fixed panel installations in Kirindiwela, Western Province, the ideal tilt angle to maximize year-round solar production is 6 degrees facing South. This relatively shallow angle is due to the location's proximity to the equator, where the sun's path remains high in the sky throughout the year.

Environmental Considerations

While Kirindiwela's tropical climate is generally conducive to solar energy production, there are some environmental factors to consider: 1. Monsoon seasons: Sri Lanka experiences two monsoon seasons, which can bring heavy rainfall and increased cloud cover. This may temporarily reduce solar output during these periods. 2. High humidity: The tropical climate results in high humidity levels, which can potentially impact solar panel efficiency and longevity. To mitigate these factors, consider the following preventative measures:

• Install panels with high-quality, weather-resistant coatings to protect against humidity and moisture.
• Implement a regular cleaning schedule to remove any dust or debris that may accumulate during dry periods.
• Use micro-inverters or power optimizers to minimize the impact of partial shading during cloudy days.
• Consider slightly over-sizing the system to compensate for potential production dips during monsoon seasons.

By implementing these measures, solar PV installations in Kirindiwela can maximize their energy production potential and ensure long-term reliability, making the most of this location's favorable solar conditions.

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 Kirindiwela

Seasonal solar PV output for Latitude: 7.0443, Longitude: 80.1251 (Kirindiwela, 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 Kirindiwela, Sri Lanka

To maximize your solar PV system's energy output in Kirindiwela, Sri Lanka (Lat/Long 7.0443, 80.1251) 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 Kirindiwela, 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 Kirindiwela, 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 Kirindiwela, 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 Kirindiwela, 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 Kirindiwela, Sri Lanka

The area around Kirindiwela, Sri Lanka, is characterized by a mix of gently rolling hills and flat lowlands. This region is part of the country's wet zone, which experiences higher rainfall compared to other parts of Sri Lanka. The landscape is predominantly covered with lush vegetation, including tropical forests, rubber plantations, and paddy fields.

The terrain gradually rises as you move eastward from Kirindiwela towards the central highlands of Sri Lanka. To the west, the land becomes flatter as it approaches the coastal plains. Small rivers and streams crisscross the area, contributing to its verdant nature and supporting local agriculture.

In terms of suitability for large-scale solar PV (photovoltaic) installations, the areas most suited would likely be the flatter regions to the west of Kirindiwela. These areas offer several advantages:

1. They have more consistent sunlight exposure due to fewer hills that could cast shadows.
2. The flatter terrain makes construction and maintenance of solar panels easier and more cost-effective.
3. There's potentially more open space available, which is crucial for large-scale installations.

However, it's important to note that the high rainfall in this region could pose challenges for solar energy production. The frequent cloud cover might reduce the overall efficiency of solar panels. Additionally, the abundant vegetation in the area means that land clearing might be necessary, which could have environmental implications.

Any large-scale solar PV project in this area would need to carefully balance the benefits of the relatively flat terrain with the challenges posed by the wet climate. It would also be crucial to consider the impact on local agriculture and ecosystems, as well as the proximity to existing power infrastructure for connecting to the grid.

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.