Dinajpur, Rangpur Division, Bangladesh offers reasonably good conditions for solar PV energy generation throughout most of the year, though with notable seasonal variations that make it moderately suitable rather than ideal for year-round solar power production.

Seasonal Solar Performance

The solar energy output at this Northern Sub Tropics location shows distinct seasonal patterns. Spring emerges as the peak season with 5.75kWh per day per kW of installed solar capacity, making it the most productive time for solar generation. Summer and autumn maintain fairly consistent performance at 4.66kWh and 4.64kWh per day respectively, providing reliable mid-range output during these seasons. Winter presents the most challenging period for solar generation, dropping significantly to 3.86kWh per day per kW installed. This represents a substantial 33% decrease compared to spring output, indicating that solar systems in Dinajpur will produce considerably less electricity during the winter months.

Optimal Installation Setup

For fixed panel installations at this location, the ideal angle to tilt solar panels is 24 degrees facing South to maximize total year-round production. This angle is calculated by analyzing daily solar elevation angles throughout the year and weighting them according to solar irradiance data to achieve optimal annual performance.

Local Environmental Challenges

Several significant environmental and weather factors in Dinajpur can impede solar production and require careful consideration during installation:

• Monsoon rains and flooding: Bangladesh experiences intense monsoon seasons that can damage equipment and reduce solar output through cloud cover and panel soiling
• High humidity and condensation: The subtropical climate creates moisture issues that can affect electrical components and panel efficiency
• Dust and particulate matter: Agricultural activities and general atmospheric conditions can coat panels, reducing their effectiveness
• Cyclones and severe weather: The region is susceptible to tropical cyclones that can physically damage solar installations

Preventative Measures for Better Performance

To ensure greater energy production despite these challenges, several preventative measures should be implemented during solar installation:

• Elevated mounting systems: Install panels well above ground level to protect against flooding and improve air circulation
• Robust structural design: Use reinforced mounting systems capable of withstanding high winds and severe weather conditions
• Regular cleaning protocols: Establish systematic panel cleaning schedules to remove dust, debris, and organic matter
• Quality electrical components: Select inverters and wiring rated for high humidity environments with proper weatherproofing
• Drainage considerations: Ensure proper water drainage around installations to prevent standing water and equipment damage

Despite these challenges, Dinajpur's location provides adequate solar potential for viable renewable energy generation, particularly during spring and the summer-autumn period, making it a reasonably practical choice for solar PV installations when proper precautions are taken.

Note: The Northern Sub Tropics extend from 23.5° latitude North up to 35° latitude.

So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 88 locations across Bangladesh. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Bangladesh by location

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

Seasonal solar PV output for Latitude: 25.519, Longitude: 88.9526 (Dinajpur, Bangladesh), 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 24° South in Dinajpur, Bangladesh

To maximize your solar PV system's energy output in Dinajpur, Bangladesh (Lat/Long 25.519, 88.9526) throughout the year, you should tilt your panels at an angle of 24° 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 Dinajpur, Bangladesh

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 Dinajpur, Bangladesh. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 24° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
9° South in Summer	31° South in Autumn	41° South in Winter	19° 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 Dinajpur, Bangladesh

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 Dinajpur, Bangladesh.

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 Dinajpur, Bangladesh

Topographical Features of the Dinajpur Region

The landscape around Dinajpur in northern Bangladesh is characterized by relatively flat alluvial plains that form part of the greater Bengal delta system. This region sits at a modest elevation, typically ranging from 30 to 50 meters above sea level, creating a gently undulating terrain with minimal dramatic elevation changes. The area represents a transitional zone between the Himalayan foothills to the north and the vast deltaic plains that dominate much of Bangladesh.

The topography is punctuated by numerous rivers and waterways, including tributaries of the major river systems that drain southward toward the Bay of Bengal. These waterways have carved shallow valleys and created natural flood plains that contribute to the region's agricultural productivity. Small hills and elevated ridges occasionally break the otherwise flat landscape, particularly toward the northern and western edges of the district where the terrain begins to rise toward the Indian border.

Agricultural land dominates the landscape, with extensive rice paddies, crop fields, and scattered settlements creating a patchwork pattern across the plains. The soil composition consists primarily of fertile alluvial deposits, which support intensive farming but also create seasonal variations in land use patterns. During monsoon periods, lower-lying areas may experience temporary flooding, while higher ground remains accessible year-round.

Optimal Areas for Large-Scale Solar Development

The relatively flat topography of the Dinajpur region presents excellent opportunities for large-scale solar photovoltaic installations. The most suitable areas would be the elevated plains and gentle ridges that remain above seasonal flood levels, particularly those located on the higher ground toward the northern and western portions of the district. These areas combine the advantage of stable, well-drained terrain with minimal shading from topographical features.

Former agricultural land that has been converted from seasonal rice cultivation to more permanent uses would be particularly well-suited for solar development. These areas typically have existing access infrastructure while maintaining the flat, unobstructed terrain necessary for efficient solar panel installation. The gentle slopes found on some of the higher ridges could actually provide optimal angles for solar panel positioning without requiring extensive grading or earthwork.

Areas near existing transportation corridors and electrical infrastructure would offer additional advantages for solar development, as the flat terrain makes it relatively straightforward to construct access roads and transmission connections. The stable geological conditions typical of alluvial plains also provide excellent foundations for solar mounting systems, reducing construction complexity and long-term maintenance requirements.

Locations that maintain elevation above the typical flood plains would be essential for year-round solar generation reliability. These slightly elevated areas, while still maintaining the flat characteristics ideal for solar installations, would avoid the seasonal accessibility and equipment protection issues that could affect lower-lying sites during monsoon periods.

Bangladesh solar PV Stats as a country

Bangladesh ranks 63rd in the world for cumulative solar PV capacity, with 329 total MW's of solar PV installed. Each year Bangladesh is generating 2 Watts from solar PV per capita (Bangladesh ranks 87th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Bangladesh?

Yes, there are incentives for businesses wanting to install solar energy in Bangladesh. The government of Bangladesh 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 Bangladesh? 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.