Solar PV Analysis of Rauma, Finland
The location in Rauma, Satakunta, Finland is not ideal for year-round energy generation via solar PV due to its position in the Northern Temperate Zone. This means that it experiences significant seasonal variations in sunlight exposure.
During summer, you can expect a decent amount of electricity output from solar panels at 6.22kWh/day per kW of installed solar. Spring also provides a good amount of sunlight with an expected output of 4.37kWh/day per kW. Therefore, these are the best times to generate solar energy at this location.
However, autumn and winter have much lower outputs at 1.39kWh/day and 0.41kWh/day respectively per kW due to shorter daylight hours and less intense sunlight during these seasons.
To maximize total year-round production from your solar PV system in Rauma, Satakunta, you should tilt your panels at an angle of 50 degrees facing southwards as this will ensure maximum exposure to the sun throughout the day across all seasons.
There may be environmental or weather factors that could impede solar production here which are significant enough to consider when installing a system:
1) Snowfall: Being located in Finland, heavy snowfall during winter might cover your panels reducing their efficiency significantly.
Preventive measure: Install automated snow removal systems or regularly clean off snow manually.
2) Low Sunlight Intensity: During autumn and winter months there's low intensity sunlight which reduces panel efficiency.
Preventive measure: Use high-efficiency panels designed for low light conditions.
3) Short Daylight Hours: In winter months especially around December there are very few hours of daylight leading to reduced power generation.
Preventive measure: There's not much one can do about this but having battery storage could store excess energy produced during summer/spring for use during darker periods would be beneficial.
In conclusion, while it's possible to generate some level of power using Solar PV in Rauma throughout the year, the output varies significantly across seasons and there are environmental factors that need to be considered when setting up a system.
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 Rauma
Seasonal solar PV output for Latitude: 61.1343, Longitude: 21.5068 (Rauma, 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 Rauma, Finland
To maximize your solar PV system's energy output in Rauma, Finland (Lat/Long 61.1343, 21.5068) 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 Rauma, 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 Rauma, 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 |
|---|---|---|---|
| 44° South in Summer | 62° South in Autumn | 73° 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 Rauma, 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 Rauma, 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 Rauma, Finland
Rauma, Finland is located on the west coast of the country and is characterized by a relatively flat topography. The area around Rauma consists mostly of low-lying plains with some small hills and forests interspersed. There are also several bodies of water in and around the city including both lakes and coastal areas.
Finland's climate isn't ideal for solar power because it has long winters with short daylight hours. However, during summer months, sunlight can last up to 19 hours per day which could be advantageous for solar energy production if effectively captured and stored.
The most suitable places for large-scale solar PV installations would be open, flat areas that are not shadowed by buildings or trees. In Rauma's case, such locations might include agricultural lands outside the city or potentially even some coastal regions where there aren't any obstructions blocking sunlight.
However, it should be noted that implementing large-scale solar PV in Finland would require careful planning due to factors like lower overall sunlight levels compared to more southern countries as well as potential environmental considerations related to land use and impact on local ecosystems.
It may also make sense to consider rooftop installations on larger buildings within the city itself – this wouldn't require additional land use and could provide localised power supply directly where it’s needed.
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: Saturday 8th of June 2024
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.
