Tokat Province, Turkey, located in the Northern Temperate Zone at coordinates 40.3908°N, 36.6117°E, presents a moderately favorable location for year-round solar photovoltaic energy generation, though with significant seasonal variations in output.
Seasonal Solar Performance
The solar energy production at this location shows typical patterns for a temperate climate region. Summer delivers the strongest performance at 6.82 kWh per day per kW of installed solar capacity, making it the peak season for solar generation. Spring follows as the second-best season with 5.23 kWh per day per kW, offering substantial energy production during the transition months. Autumn sees a notable decline to 3.59 kWh per day per kW as daylight hours decrease and sun angles become less favorable. Winter presents the most challenging conditions with only 2.53 kWh per day per kW, representing roughly one-third of summer production levels. For optimal year-round energy capture from a fixed panel installation at this location, solar panels should be tilted at 35 degrees facing south. This angle maximizes total annual production by balancing the varying sun angles throughout the seasons.Environmental and Weather Factors
Several local factors in Tokat Province could potentially impact solar energy production:- Snow accumulation during winter months can block panels and significantly reduce output
- Dust and agricultural particles from the surrounding farming regions may accumulate on panel surfaces
- Temperature fluctuations between seasons can affect panel efficiency
- Occasional hail storms typical of continental climates pose physical damage risks
Preventative Measures for Enhanced Production
To maximize solar energy production despite these challenges, several installation strategies prove effective. Installing panels at the recommended 35-degree tilt naturally helps snow slide off more easily, reducing winter blockages. Regular cleaning schedules, particularly during dusty agricultural seasons, maintain optimal light transmission to the solar cells. Proper ventilation spacing behind panels prevents overheating during hot summer months, maintaining efficiency when production potential is highest. Using tempered glass panels with anti-reflective coatings helps resist both hail damage and dust accumulation. Ground-mounted systems offer easier access for maintenance and cleaning compared to rooftop installations, though they require more land area. Installing monitoring systems helps identify performance drops quickly, allowing for prompt maintenance interventions.Overall Assessment
While Tokat Province experiences the seasonal limitations typical of temperate climates, the strong summer and spring production periods make it a reasonably viable location for solar energy generation. The key to success lies in proper system design, regular maintenance, and realistic expectations about winter performance reductions.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 165 locations across Turkey. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Turkey by location
Solar output per kW of installed solar PV by season in Tokat Province
Seasonal solar PV output for Latitude: 40.3908, Longitude: 36.6117 (Tokat Province, Turkey), 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 35° South in Tokat Province, Turkey
To maximize your solar PV system's energy output in Tokat Province, Turkey (Lat/Long 40.3908, 36.6117) throughout the year, you should tilt your panels at an angle of 35° 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 Tokat Province, Turkey
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 Tokat Province, Turkey. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 35° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 24° South in Summer | 45° South in Autumn | 55° South in Winter | 32° 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 Tokat Province, Turkey
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 Tokat Province, Turkey.
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 Tokat Province, Turkey
Topographical Features of Tokat Province
Tokat Province sits in the heart of Turkey's Black Sea region, characterized by a diverse and complex topographical landscape that transitions from coastal mountains in the north to central Anatolian plateaus in the south. The province occupies a strategic position where the Pontic Mountains begin to give way to the more gentle terrain of central Turkey, creating a varied elevation profile that significantly influences both climate and land use patterns.
The northern portions of Tokat Province feature the southern slopes of the Pontic Mountain range, with elevations rising dramatically from the central valleys to peaks exceeding 2,000 meters above sea level. These mountainous areas are characterized by steep gradients, deep valleys carved by centuries of water erosion, and heavily forested slopes that create a rugged and challenging terrain for large-scale development projects.
Moving southward through the province, the landscape gradually transitions into rolling hills and broader valleys, with the Yesilirmak River serving as the primary drainage system. This river valley creates some of the most fertile and accessible terrain in the region, with gentler slopes and more stable geological conditions. The central areas around Tokat city itself sit at approximately 600 meters elevation, positioned within a natural basin that provides relatively flat terrain surrounded by gradually rising hills.
The southern reaches of the province merge into the northern edges of the Central Anatolian Plateau, where the topography becomes increasingly suitable for large-scale infrastructure development. These areas feature broad, gently undulating plains with minimal vegetation cover and excellent accessibility via existing transportation networks.
Optimal Areas for Large-Scale Solar Development
The most promising locations for extensive solar photovoltaic installations lie predominantly in the southern and southeastern portions of Tokat Province, where the terrain transitions into the Central Anatolian characteristics. These areas offer several critical advantages including relatively flat to gently sloping land that minimizes grading and foundation costs, while providing optimal orientation possibilities for solar panel arrays.
The plains extending southeast of Tokat city toward the borders with Sivas Province present particularly attractive conditions for solar development. This region features stable geological conditions, minimal forest cover, and extensive areas of agricultural land that could potentially be converted to solar use. The terrain here consists mainly of open steppes and cultivated fields with gentle gradients that rarely exceed five percent slope, making them ideal for large-scale solar installations.
Areas around the towns of Erbaa and Niksar also show promise, particularly on the elevated plateaus south of these population centers. While these locations maintain higher elevations than the southeastern plains, they offer excellent exposure conditions and relatively flat terrain suitable for solar arrays. The proximity to existing electrical infrastructure and transportation networks in these areas provides additional advantages for project development and maintenance access.
The river valleys, while offering flat terrain, are generally less suitable for solar development due to their agricultural importance, potential flood risks, and higher humidity levels that could impact equipment performance. Similarly, the mountainous northern regions, despite potentially favorable exposure conditions at higher elevations, present significant challenges in terms of accessibility, terrain preparation, and grid connection costs that make them impractical for large-scale solar development.
Turkey solar PV Stats as a country
Turkey ranks 16th in the world for cumulative solar PV capacity, with 7,817 total MW's of solar PV installed. This means that 5.90% of Turkey's total energy as a country comes from solar PV (that's 14th in the world). Each year Turkey is generating 92 Watts from solar PV per capita (Turkey ranks 41st in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Turkey?
Yes, there are incentives for businesses wanting to install solar energy in Turkey. The Turkish government offers a number of financial incentives and tax breaks for businesses that invest in renewable energy sources such as solar power. These include grants, loans, and tax credits. Additionally, the government has set up a feed-in tariff system which guarantees a certain price per kilowatt hour of electricity generated from solar panels. This helps to make investing in solar energy more attractive to businesses.
Do you have more up to date information than this on incentives towards solar PV projects in Turkey? Please reach out to us and help us keep this information current. Thanks!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 30th of June 2025
Last Updated: Tuesday 5th of August 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.




