Fethiye, Muğla, Turkey presents a moderately favorable location for year-round solar energy generation, though with significant seasonal variations typical of its Northern Temperate Zone position at coordinates 36.6256°N, 29.1154°E.

Seasonal Solar Performance

The solar energy output at Fethiye shows substantial fluctuation throughout the year. Summer delivers the strongest performance at 8.49 kWh per day per kW of installed capacity, making it the peak season for solar generation. Spring follows as the second-best period with 6.78 kWh per day per kW, offering excellent conditions for solar production. Autumn sees a notable decline to 4.79 kWh per day per kW, while winter represents the most challenging period with only 2.97 kWh per day per kW. This winter figure is approximately 35% of summer production, indicating significant seasonal dependency. For optimal year-round performance from a fixed panel installation at this location, solar panels should be tilted at 31 degrees facing south. This angle maximizes total annual energy production by accounting for the sun's varying position throughout the seasons.

Local Environmental Factors Affecting Solar Production

Several environmental and weather factors in the Fethiye region can impact solar panel efficiency and require consideration during installation:

• Salt air exposure: Fethiye's coastal Mediterranean location means panels face constant exposure to salt-laden air, which can corrode mounting systems and reduce panel efficiency over time
• Dust accumulation: The region experiences dust from both local terrain and occasional Saharan dust events, which can significantly reduce panel output by blocking sunlight
• High summer temperatures: Extreme heat during peak summer months can reduce panel efficiency, as photovoltaic cells perform less effectively at very high temperatures
• Winter cloud cover: Mediterranean winter weather patterns bring increased cloudiness and precipitation, contributing to reduced winter solar output

Preventative Measures for Enhanced Performance

To maximize solar energy production despite these challenges, several installation strategies prove beneficial. Using corrosion-resistant mounting materials such as marine-grade aluminum or stainless steel helps combat salt air damage and extends system lifespan. Regular cleaning schedules become essential, particularly during dusty periods and after storms. Installing panels with adequate spacing allows for proper airflow, helping to manage heat buildup during intense summer conditions. Choosing high-quality panels with better temperature coefficients can minimize efficiency losses during peak heat periods. Additionally, installing monitoring systems helps identify performance issues quickly, allowing for prompt maintenance interventions. Overall, while Fethiye offers reasonable solar potential with excellent summer and spring performance, the significant winter reduction and local environmental challenges require careful planning and ongoing maintenance to achieve optimal long-term energy production.

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 Fethiye

Seasonal solar PV output for Latitude: 36.6256, Longitude: 29.1154 (Fethiye, 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 31° South in Fethiye, Turkey

To maximize your solar PV system's energy output in Fethiye, Turkey (Lat/Long 36.6256, 29.1154) throughout the year, you should tilt your panels at an angle of 31° 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 Fethiye, 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 Fethiye, Turkey. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 31° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
20° South in Summer	41° South in Autumn	51° South in Winter	29° 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 Fethiye, 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 Fethiye, Turkey.

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 Fethiye, Turkey

Topographical Features of the Fethiye Region

Fethiye sits in a remarkably diverse landscape along Turkey's Mediterranean coast, where the Taurus Mountains meet the azure waters of the Turkish Riviera. The town itself occupies a natural harbor protected by a series of peninsulas and islands, creating the famous Fethiye Bay. The immediate coastal area features relatively flat terrain interspersed with rolling hills, while the dramatic limestone peaks of the Taurus range rise sharply inland, reaching elevations of over 3,000 meters within 50 kilometers of the coast.

The region's topography is characterized by a complex mix of coastal plains, river valleys, and mountainous terrain. The Xanthos River valley extends northeast from Fethiye, providing one of the few significant flat corridors through the otherwise rugged landscape. South and west of the town, the Teke Peninsula extends into the Mediterranean, featuring a combination of coastal plateaus and steep cliffs that drop directly into the sea.

Pine forests blanket much of the higher elevations, while the lower slopes and valleys support a Mediterranean scrubland known locally as maquis. The limestone geology has created numerous caves, underground rivers, and dramatic rock formations throughout the area. Several small rivers and seasonal streams flow down from the mountains, creating fertile valleys that have been cultivated for millennia.

Optimal Areas for Large-Scale Solar Development

The most promising locations for extensive solar photovoltaic installations lie in the inland valleys and plateaus, particularly those situated between 200 and 800 meters above sea level. The Xanthos River valley presents excellent opportunities, offering substantial flat areas with minimal vegetation and good accessibility for construction and maintenance. These valley floors provide natural clearings with relatively few obstacles and benefit from stable weather patterns.

The elevated plateaus north and northeast of Fethiye represent another prime candidate area for solar development. These areas combine favorable topographical conditions with reduced competition from tourism and residential development. The terrain here consists of gently rolling hills and flat mesa-like formations that would require minimal grading for large-scale installations. The higher elevation also provides clearer atmospheric conditions and reduced humidity compared to coastal locations.

Areas around the towns of Kemer and Elmalı, roughly 30-50 kilometers inland from Fethiye, offer particularly attractive conditions. The landscape transitions from coastal mountains to the Anatolian plateau, creating extensive areas of relatively flat, arid terrain with sparse vegetation. These locations benefit from stable geological conditions and are sufficiently removed from major population centers to allow for large-scale development without significant land use conflicts.

The coastal areas immediately around Fethiye are generally less suitable for major solar installations due to the combination of steep topography, dense vegetation, tourism infrastructure, and environmental protections. However, smaller installations might find suitable sites on the gentler slopes of the coastal hills, particularly those facing south and southeast with minimal shading from surrounding peaks.

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!

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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.