Solar PV Analysis of Tbilisi, Georgia
Tbilisi, K'alak'i T'bilisi, Georgia (latitude: 41.6959, longitude: 44.832) is a suitable location for solar PV installations due to the varying average daily energy production per kW of installed solar capacity across different seasons - 6.71 kWh/day in Summer, 3.19 kWh/day in Autumn, 2.28 kWh/day in Winter, and 5.09 kWh/day in Spring. The higher energy generation during the summer months can be attributed to Tbilisi's position within the Northern Temperate Zone, which results in longer daylight hours and increased sunlight availability.
However, certain weather conditions may impact solar energy production at this location. Heavy rain or snowfall can reduce sunlight availability and increase cloud cover, obstructing some of the sun's rays from reaching the panels. To mitigate these effects on energy production, it is essential to ensure proper maintenance of the solar PV system by regularly cleaning panels and removing any accumulated debris or snow.
High winds may also pose a risk to exposed components or wiring associated with a solar PV system if not properly secured and maintained; this could lead to reduced efficiency and output capacity over time if left unaddressed.
To optimize energy generation at this location year-round, it is recommended that fixed panel installations are tilted at an angle of 36 degrees facing southward for maximum exposure to sunlight throughout all seasons.
In conclusion, Tbilisi offers a suitable environment for generating solar power year-round with appropriate installation measures such as optimal panel tilt angle and regular maintenance practices addressing potential weather-related challenges like heavy rain or snowfall and high winds that could impede overall energy production efficiency.
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 8 locations across Georgia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Georgia by location
Solar output per kW of installed solar PV by season in Tbilisi
Seasonal solar PV output for Latitude: 41.6959, Longitude: 44.832 (Tbilisi, Georgia), 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 36° South in Tbilisi, Georgia
To maximize your solar PV system's energy output in Tbilisi, Georgia (Lat/Long 41.6959, 44.832) throughout the year, you should tilt your panels at an angle of 36° 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 Tbilisi, Georgia
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 Tbilisi, Georgia. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 36° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 25° South in Summer | 46° South in Autumn | 56° South in Winter | 33° 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 Tbilisi, Georgia
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 Tbilisi, Georgia.
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 Tbilisi, Georgia
The topography around Tbilisi, Georgia is mostly hilly and mountainous. The city itself is located in a valley surrounded by hills and mountains. Areas to the north and east of the city are particularly hilly, while areas to the south and west are more flat.
The most suitable areas for large-scale solar PV installations would be those that have a relatively flat terrain with direct access to sunlight throughout the day. Areas on higher ground such as hills and mountains may also be suitable provided they are not too steep or covered in trees or other obstructions. Additionally, any area that has clear skies for most of the year will also be ideal for solar PV installations.
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Thursday 11th of August 2022
Last Updated: Monday 21st of July 2025
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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.
