Solar PV Analysis of Saint-Germain-en-Laye, France
The location at Saint-Germain-en-Laye, France, is suitable for solar energy generation throughout the year. However, it's more effective during certain seasons than others.
In simple terms, a solar panel system installed here can produce different amounts of energy depending on the season. It would produce the most energy in summer (5.56kWh per day for every kW of solar panels installed), followed by spring (4.97kWh/day per kW), then autumn (2.89kWh/day per kW) and least in winter (1.34 kWh/day per kW). So, if you were to install a solar panel system there, you'd get more power out of it in summer and spring than in autumn and winter.
To get the most out of your solar panels all year round at this location, you should tilt them 42 degrees towards the south.
There could be some local factors that might affect how much energy your panels can generate though; these include things like weather conditions or physical features of the landscape.
For example, Saint-Germain-en-Laye is known to have overcast skies quite often which could reduce sunlight exposure to your panels especially during winter months when days are shorter and sun is lower in sky already limiting potential sunlight exposure hours.
Also consider any tall buildings or trees nearby that might cast shadows on your panels as they could also limit their exposure to sunlight thus reducing their efficiency.
You can't change these factors but there are things you can do when installing your panels to help deal with them:
- You could use high-efficiency modules that work better under low light conditions.
- You could install a tracking system so your panels follow the sun across its path during daytime optimizing sunlight exposure.
- Trim any overhanging branches from nearby trees.
- If possible choose an installation site with least potential shading from nearby structures or vegetation.
Remember though these measures will increase installation costs so you need to consider cost versus benefit.
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 627 locations across France. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in France by location
Solar output per kW of installed solar PV by season in Saint-Germain-en-Laye
Seasonal solar PV output for Latitude: 48.9034, Longitude: 2.0841 (Saint-Germain-en-Laye, France), 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 42° South in Saint-Germain-en-Laye, France
To maximize your solar PV system's energy output in Saint-Germain-en-Laye, France (Lat/Long 48.9034, 2.0841) throughout the year, you should tilt your panels at an angle of 42° 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 Saint-Germain-en-Laye, France
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 Saint-Germain-en-Laye, France. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 42° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 32° South in Summer | 52° South in Autumn | 62° South in Winter | 41° 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 Saint-Germain-en-Laye, France
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 Saint-Germain-en-Laye, France.
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 Saint-Germain-en-Laye, France
Saint-Germain-en-Laye, France is located in the Île-de-France region and is characterized by a relatively flat to gently rolling topography. The area is primarily urban and suburban, with a mix of residential areas, commercial centers, parks, and forests. The town itself sits on a plateau about 100 meters above the Seine River.
Regarding solar photovoltaic (PV) installations in the area around Saint-Germain-en-Laye, there are several factors to consider:
1. Solar Irradiance: This region of France receives moderate levels of sunlight throughout the year which makes it suitable for solar PV.
2. Land Availability: Given that Saint-Germain-en-Laye is largely built up and urbanized, available land for large-scale solar farms might be limited within the town itself. However, open spaces in surrounding rural areas could potentially be used for such purposes.
3. Rooftop Solar: Given its urban setting with many residential and commercial buildings, rooftop solar PV systems could be an excellent option in Saint-Germain-en-Laye itself.
4. Environmental Considerations: Areas such as forests or protected natural zones may not be suitable due to environmental concerns or legal restrictions on development.
5. Infrastructure Access: Proximity to power grid infrastructure would also need consideration as remote locations can increase costs associated with transmitting electricity back to where it will be used or sold.
In conclusion, while large-scale ground-mounted solar farms may face challenges due to land availability within Saint-German-en-Laye itself; outlying rural areas or rooftop installations could provide viable alternatives for large scale solar PV deployment.
France solar PV Stats as a country
France ranks 11th in the world for cumulative solar PV capacity, with 14,718 total MW's of solar PV installed. This means that 2.80% of France's total energy as a country comes from solar PV (that's 30th in the world). Each year France is generating 218 Watts from solar PV per capita (France ranks 23rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in France?
Yes, there are several incentives for businesses wanting to install solar energy in France. The French government offers a range of financial incentives and tax credits to encourage businesses to invest in renewable energy sources such as solar power. These include the Feed-in Tariff (FiT), which pays businesses for the electricity they generate from their solar panels, and the Investment Tax Credit (ITC), which provides a 30% tax credit on investments made in renewable energy systems. Additionally, businesses may be eligible for grants or loans from local authorities or regional development agencies.
Do you have more up to date information than this on incentives towards solar PV projects in France? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Friday 12th of January 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.
