Le Vaudreuil, Normandy, France, situated at 49.2523 latitude and 1.2052 longitude, presents a mixed picture for year-round solar PV energy generation. This location in the Northern Temperate Zone experiences significant seasonal variations in solar energy production, which affects its overall suitability for solar power.
Seasonal Solar Performance
The solar energy output at Le Vaudreuil varies considerably throughout the year. Summer stands out as the most productive season, with an impressive 5.39 kWh per day for each kilowatt of installed solar capacity. Spring follows closely behind, generating 5.06 kWh/day. However, there's a sharp decline in production during autumn (2.65 kWh/day) and winter (1.17 kWh/day).
These figures indicate that Le Vaudreuil is particularly well-suited for solar energy production during the warmer months, from late spring through early autumn. During this period, longer days and higher sun angles contribute to increased solar panel efficiency.
Optimal Panel Installation
To maximize year-round solar energy production in Le Vaudreuil, Normandy, fixed solar panels should be installed at a tilt angle of 42 degrees facing south. This angle has been calculated to optimize energy capture across all seasons, taking into account the location's latitude and the Earth's elliptical orbit.
Environmental and Weather Considerations
While Le Vaudreuil's location is generally favorable for solar energy production, there are some environmental and weather factors that could potentially impact solar panel efficiency:
- Cloud cover: The region can experience significant cloud cover, especially during autumn and winter, which may reduce solar energy production.
- Precipitation: Rainfall and occasional snow in winter can temporarily decrease panel efficiency.
To mitigate these factors, several preventative measures can be taken during solar panel installation:
1. Use high-efficiency panels that perform well in low-light conditions to maximize energy production during cloudy days.
2. Install panels with a slightly steeper tilt than the optimal 42 degrees to promote self-cleaning from rain and snow, ensuring consistent performance.
3. Implement a regular cleaning and maintenance schedule to remove any debris or snow that might accumulate on the panels, particularly during autumn and winter.
In conclusion, while Le Vaudreuil faces challenges in solar energy production during the colder months, its strong performance in spring and summer makes it a viable location for solar PV installations. With proper planning and maintenance, solar energy can be a valuable renewable resource for this French community.
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 Le Vaudreuil
Seasonal solar PV output for Latitude: 49.2523, Longitude: 1.2052 (Le Vaudreuil, 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 Le Vaudreuil, France
To maximize your solar PV system's energy output in Le Vaudreuil, France (Lat/Long 49.2523, 1.2052) 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 Le Vaudreuil, 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 Le Vaudreuil, 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 |
|---|---|---|---|
| 33° South in Summer | 52° South in Autumn | 63° 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 Le Vaudreuil, 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 Le Vaudreuil, 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 Le Vaudreuil, France
The area surrounding Le Vaudreuil, France, is characterized by a diverse and picturesque landscape typical of the Normandy region. Situated in the Seine Valley, the topography is primarily composed of gently rolling hills and flat plains, with some areas of more pronounced elevation changes. To the north and east of Le Vaudreuil, the terrain is relatively flat, dominated by the wide floodplain of the Seine River. This area features rich agricultural land and scattered patches of woodland. As one moves away from the river, the landscape gradually becomes more undulating, with low hills and shallow valleys creating a patchwork of fields, meadows, and small forests. To the south and west, the terrain becomes slightly more varied, with more pronounced hills and valleys. This area is part of the transition zone between the Seine Valley and the higher plateaus of central Normandy. Here, you'll find a mix of farmland, orchards, and wooded areas, with some steeper slopes and small streams cutting through the landscape.
Potential Areas for Large-Scale Solar PV
When considering locations for large-scale solar photovoltaic (PV) installations near Le Vaudreuil, several factors come into play, including available space, sunlight exposure, and minimal impact on valuable agricultural land or natural habitats. The flat areas to the north and east of Le Vaudreuil, particularly those not prone to flooding, could be suitable for solar PV development. These locations offer large, open spaces with good sun exposure and are often less productive for agriculture due to their proximity to the river. Some of the gently sloping hillsides to the south and west might also be appropriate for solar installations, especially those facing south or southwest. These areas can provide optimal angles for solar panels to capture sunlight throughout the day. However, care should be taken to avoid prime agricultural land or areas of significant ecological value. Former industrial sites or brownfield areas in the region could also be repurposed for solar PV installations. These locations often have the advantage of existing infrastructure and minimal impact on natural or agricultural resources. It's important to note that any large-scale solar PV development would require careful planning and consultation with local authorities, environmental agencies, and the community to ensure it aligns with regional land use policies and environmental protection goals.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!
Citation Guide
Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Monday 3rd of February 2025
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.




