Solar PV Analysis of Turku, Finland
Situated in the Northern Temperate Zone, Turku, Southwest Finland, Finland (latitude 60.46, longitude 22.3119) offers varying solar power generation potential across different seasons due to its geographical location and seasonal sunlight availability. During summer months, the longer daylight hours contribute to a higher average of solar energy production at approximately 5.88 kWh per day for each kW of installed solar capacity.
However, as autumn arrives and daylight hours decrease, there is a significant drop in solar energy production with an average of only 1.45 kWh per day per kW of installed capacity. This trend continues into winter when the shortest days occur resulting in minimal sunlight availability; thus reducing the average daily output to as low as 0.51 kWh per kW.
With the onset of spring and increasing daylight hours, there is a notable increase in solar energy generation potential reaching an average output of approximately 3.99 kWh per day for each kW of installed capacity.
To maximise year-round productivity from this location's variable sunlight availability, it is recommended that fixed panel installations be tilted at an angle of roughly 50 degrees facing southwards.
While Turku's position allows for considerable yearly solar power generation overall despite seasonal variations; local weather conditions such as heavy snowfall or rainfall pose challenges by potentially obscuring panels and reducing their efficiency temporarily until cleared.
Preventative measures can include installing panels at steeper angles to help snow slide off more easily or using automated cleaning systems to maintain panel cleanliness and optimise light absorption throughout the year regardless of weather conditions.
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 56 locations across Finland. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Finland by location
Solar output per kW of installed solar PV by season in Turku
Seasonal solar PV output for Latitude: 60.46, Longitude: 22.3119 (Turku, Finland), 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 50° South in Turku, Finland
To maximize your solar PV system's energy output in Turku, Finland (Lat/Long 60.46, 22.3119) throughout the year, you should tilt your panels at an angle of 50° 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 Turku, Finland
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 Turku, Finland. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 50° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 43° South in Summer | 62° South in Autumn | 72° South in Winter | 52° 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 Turku, Finland
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 Turku, Finland.
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 Turku, Finland
The topography around Turku, Finland is mostly flat with some low hills to the north and west. The areas around Turku are generally well-suited for large-scale solar PV installations due to their proximity to the Baltic Sea and their open landscape. Areas near the coast, such as Kupittaa, Littoistenmäki, and Varissuo would be particularly suitable for large-scale solar PV due to their unobstructed access to sunlight. Additionally, areas close to bodies of water like rivers or lakes may also provide an ideal location for solar PV installations due to the reflective properties of water.
Finland solar PV Stats as a country
Finland ranks 59th in the world for cumulative solar PV capacity, with 404 total MW's of solar PV installed. This means that 0.30% of Finland's total energy as a country comes from solar PV (that's 41st in the world). Each year Finland is generating 73 Watts from solar PV per capita (Finland ranks 45th in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Finland?
Yes, there are incentives for businesses wanting to install solar energy in Finland. The Finnish government offers a range of financial support and tax incentives for businesses that invest in renewable energy sources such as solar power. This includes grants, loans, and tax deductions. Additionally, the government has set up a feed-in tariff system which guarantees a fixed price for electricity generated from renewable sources such as solar power.
Do you have more up to date information than this on incentives towards solar PV projects in Finland? Please reach out to us and help us keep this information current. Thanks!
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Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 30th of October 2023
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.
