Lira, Northern Region, Uganda, situated at latitude 2.2499 and longitude 32.8999, presents a highly favorable location for solar energy generation throughout the year. This tropical location benefits from consistent sunlight, with seasons primarily characterized by wet and dry periods rather than significant temperature variations.

Year-round Solar Potential

The solar energy output in Lira remains remarkably stable across all seasons. In summer, the average daily production is 5.72 kWh per kW of installed solar capacity. This increases slightly to 6.53 kWh/day in both autumn and winter, with spring seeing a minor decrease to 6.40 kWh/day. These figures indicate a consistently high solar potential throughout the year, with minimal seasonal fluctuations.

Optimal Panel Tilt

For fixed solar panel installations in Lira, Northern Region, the ideal tilt angle to maximize year-round energy production is 3 degrees South. This nearly horizontal orientation takes advantage of the location's proximity to the equator, where the sun's path remains relatively high in the sky throughout the year.

Peak Production Periods

While solar generation remains strong year-round, the autumn and winter seasons show marginally higher output. This slight increase could be attributed to clearer skies or reduced cloud cover during these periods. However, the difference is minimal, emphasizing the location's consistent solar potential across all seasons.

Environmental Considerations

Despite the generally favorable conditions, there are some environmental factors to consider when installing solar panels in Lira: 1. Dust and pollen: During dry seasons, airborne particles can accumulate on panel surfaces, potentially reducing efficiency. 2. Heavy rainfall: The wet seasons may bring intense rain, which could temporarily affect solar output. To mitigate these issues, regular cleaning of solar panels is recommended, especially during dry periods. Additionally, installing panels at the optimal tilt angle can help with natural cleaning during rainy seasons. Robust mounting systems should be used to withstand potential strong winds associated with tropical storms. In conclusion, Lira's location offers excellent conditions for solar PV installations, with high and consistent energy output potential throughout the year. With proper installation and maintenance, solar energy systems in this area can provide a reliable and efficient 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 2 locations across Uganda. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Uganda by location

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

Seasonal solar PV output for Latitude: 2.2499, Longitude: 32.8999 (Lira, Uganda), 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 3° South in Lira, Uganda

To maximize your solar PV system's energy output in Lira, Uganda (Lat/Long 2.2499, 32.8999) throughout the year, you should tilt your panels at an angle of 3° 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 Lira, Uganda

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 Lira, Uganda. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 3° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
13° North in Summer	8° South in Autumn	18° South in Winter	4° North 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 Lira, Uganda

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 Lira, Uganda.

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 Lira, Uganda

The topography around Lira, Uganda, is characterized by gently rolling hills and expansive plains. This region, located in the northern part of the country, features a relatively flat landscape with occasional low-lying hills and shallow valleys. The area is part of the larger East African Plateau, which contributes to its generally even terrain. Lira and its surroundings are situated at an elevation of approximately 1,100 meters (3,600 feet) above sea level. The landscape is dotted with scattered trees and small patches of woodland, interspersed with open grasslands and cultivated fields. Several small rivers and streams crisscross the area, creating a network of water bodies that support local agriculture and wildlife.

Suitable Areas for Large-Scale Solar PV

When considering locations for large-scale solar photovoltaic (PV) installations near Lira, several factors come into play. The most suitable areas would be those with ample open space, minimal shading, and good access to existing infrastructure. The expansive plains to the east and southeast of Lira present promising opportunities for solar PV development. These areas offer large, unobstructed stretches of land with relatively flat terrain, which is ideal for the installation of solar panels. The lack of significant elevation changes in these regions would minimize the need for extensive land preparation and reduce construction costs. Another potentially suitable area lies to the southwest of Lira, where the landscape transitions into more open grasslands. This region benefits from fewer trees and less agricultural activity, providing clear, unshaded spaces for solar arrays. The proximity to existing roads and power transmission lines in this direction could also facilitate easier integration into the electrical grid. It's worth noting that while the entire region around Lira receives ample sunlight throughout the year, areas with slightly higher elevations might offer marginally better solar exposure. Some of the gentle hills to the north and northwest of Lira could provide such advantages, although the benefits would need to be weighed against the increased complexity of installation on sloping terrain. When selecting specific sites for solar PV projects, it would be crucial to conduct detailed environmental and social impact assessments to ensure minimal disruption to local communities and ecosystems. Additionally, proximity to water sources for panel cleaning and maintenance should be considered, making locations near the area's rivers and streams potentially advantageous, provided they don't interfere with existing water usage or pose environmental risks.

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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.