Solar PV Analysis of Dushanbe, Tajikistan
The location at Dushanbe, Tajikistan, which is in the Northern Temperate Zone, is good for generating energy using solar power but it's not perfect. The amount of energy you can get from solar panels varies throughout the year.
In simple terms, the best time to generate solar power in Dushanbe would be during the summer when you can expect around 8.12 kilowatt hours per day for each kilowatt of installed solar power. This means that if you have a 1-kilowatt solar panel system installed at your place, it could produce about 8.12 units of electricity per day during summer.
In autumn and spring, you would get less electricity from your panels - about 4.74 units and 5.66 units respectively per day for each kilowatt of installed solar power.
Winter is the least productive season for generating electricity using solar panels in this location because there's less sunlight available during these months; here we can expect only around 2.86 units of electricity per day for every kilowatt of installed capacity.
To maximize your year-round production from your panels at this location, it would be ideal to tilt them towards south at an angle of approximately 33 degrees.
However, there could be local factors that might affect how much energy you could actually generate with a fixed panel installation here in Dushanbe - things like weather conditions or physical features (like mountains) that might block sunlight could reduce how much energy your panels produce.
For example: If there are many cloudy or rainy days throughout the year then this will reduce overall productivity as clouds obstruct sunlight reaching the panels; similarly if there are tall buildings or mountains nearby blocking direct sunlight then this too will affect productivity negatively.
To ensure greater energy production despite these challenges one could consider installing more than one set of panels facing different directions so as to capture maximum possible sunlight even when direct sunlight is obstructed; or consider using solar tracking systems that automatically adjust the angle of panels throughout the day to follow the sun's path and maximize exposure.
Also, regular maintenance of your solar panels - like cleaning them regularly to remove dust or snow - can help ensure they generate as much energy as possible.
Note: The Northern Temperate Zone extends from 35° latitude North up to 66.5° latitude.
So far, we have conducted calculations to evaluate the solar photovoltaic (PV) potential in 2 locations across Tajikistan. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Tajikistan by location
Solar output per kW of installed solar PV by season in Dushanbe
Seasonal solar PV output for Latitude: 38.5347, Longitude: 68.7778 (Dushanbe, Tajikistan), 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 33° South in Dushanbe, Tajikistan
To maximize your solar PV system's energy output in Dushanbe, Tajikistan (Lat/Long 38.5347, 68.7778) throughout the year, you should tilt your panels at an angle of 33° 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 Dushanbe, Tajikistan
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 Dushanbe, Tajikistan. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 33° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 22° South in Summer | 42° South in Autumn | 53° South in Winter | 30° 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 Dushanbe, Tajikistan
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 Dushanbe, Tajikistan.
Our calculation method
- Solar Position:
We determine the Sun's position on the Winter solstice using the location's latitude and solar declination. - Shadow Projection:
We calculate the shadow length cast by panels using trigonometry, considering panel tilt and the Sun's elevation angle. - 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 Dushanbe, Tajikistan
Dushanbe, the capital of Tajikistan, is located in a valley surrounded by mountains. The city sits at an elevation of about 800 meters above sea level and the nearby mountains can reach up to 3,000 meters high. The terrain is primarily mountainous with some flat plains in the valleys.
The region around Dushanbe has a semi-arid climate with hot summers and cold winters. The area receives abundant sunlight throughout the year making it suitable for solar PV installations.
For large-scale solar PV installations, flat terrains are preferable due to ease of installation and maintenance. Therefore, valley areas around Dushanbe would be most suited for such projects. However, it's crucial to consider that these regions should not be heavily populated or used for agriculture.
Additionally, rooftops in urban areas like Dushanbe itself could also be utilized for smaller scale solar power generation due to their direct exposure to sunlight.
Another potential location could be barren mountain slopes that face southward (in Northern Hemisphere) as they receive substantial sunlight throughout the day. However installing solar panels on sloping terrain can present technical challenges and increased costs compared to flat ground installations.
Before any large-scale project implementation detailed feasibility studies including environmental impact assessments would need to be conducted.
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Tuesday 30th of January 2024
Last Updated: Monday 21st of July 2025
Tell Us About Your Work
We love seeing how our research helps others! If you've cited this article in your work, we'd be delighted to hear about it. Drop us a line via our Contact Us page or on X, to share where you've used our information - we may feature a link to your work on our site. This helps create a network of valuable resources for others in the solar energy community and helps us understand how our research is contributing to the field. Plus, we occasionally highlight exceptional works that reference our research on our social media channels.
Feeling generous?
Share this with your friends!
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.
