Mont-Saint-Aignan, Normandy, France, located in the Northern Temperate Zone, presents a mixed picture for solar PV energy generation throughout the year. This location experiences significant seasonal variations in solar output, which affects the overall efficiency of solar installations.

Seasonal Solar Performance

The solar energy production in Mont-Saint-Aignan shows a stark contrast between summer and winter months. Summer yields the highest output at 5.39 kWh per day for each kW of installed solar capacity. Spring follows closely behind with 5.06 kWh/day. However, there's a dramatic drop in autumn (2.65 kWh/day) and an even more significant decrease in winter (1.17 kWh/day).

These figures indicate that solar energy generation is most effective from late spring through early autumn. During this period, longer days and higher sun angles contribute to increased solar panel efficiency. Conversely, the winter months present challenges due to shorter days, lower sun angles, and potentially more overcast conditions.

Optimal Panel Installation

To maximize year-round solar production in Mont-Saint-Aignan, Normandy, fixed solar panels should be tilted at an angle of 42 degrees facing south. This angle is calculated to optimize the panels' exposure to sunlight throughout the year, taking into account the location's latitude and the Earth's elliptical orbit.

Environmental and Weather Factors

Several factors could potentially impede solar production in Mont-Saint-Aignan:

1. Cloud cover: The region experiences frequent cloudy days, especially in autumn and winter, which can significantly reduce solar output.
2. Rainfall: Mont-Saint-Aignan has a relatively high annual rainfall, which can affect panel efficiency and require more frequent cleaning.
3. Snow: Although not extremely common, occasional snowfall in winter can temporarily cover panels, reducing their effectiveness.

Preventative Measures

To mitigate these challenges and ensure greater energy production, several measures can be taken during solar installation:

1. Use high-efficiency panels that perform well in low-light conditions to maximize output on cloudy days.

2. Install a robust cleaning system or schedule regular maintenance to keep panels free from rain residue and debris.

3. Consider adding snow guards or implementing a panel heating system to prevent snow accumulation in winter.

4. Utilize microinverters or power optimizers to minimize the impact of partial shading on overall system performance.

While Mont-Saint-Aignan's location presents some challenges for year-round solar energy production, proper installation techniques and preventative measures can help maximize the system's efficiency, particularly during the more favorable months of spring and summer.

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 Mont-Saint-Aignan

Seasonal solar PV output for Latitude: 49.4652, Longitude: 1.0929 (Mont-Saint-Aignan, 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 Mont-Saint-Aignan, France

To maximize your solar PV system's energy output in Mont-Saint-Aignan, France (Lat/Long 49.4652, 1.0929) 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 Mont-Saint-Aignan, 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 Mont-Saint-Aignan, 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	42° 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 Mont-Saint-Aignan, 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 Mont-Saint-Aignan, France.

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 Mont-Saint-Aignan, France

Mont-Saint-Aignan, located in northern France, is situated on a plateau overlooking the city of Rouen and the Seine River valley. The topography of the area is characterized by gently rolling hills and plateaus, with elevations ranging from about 50 to 150 meters above sea level. The landscape is a mix of urban development, agricultural fields, and small patches of woodland. To the north and west of Mont-Saint-Aignan, the terrain becomes more rural, with open fields and scattered forests. The land gradually slopes downward towards the Seine River to the south and east. This area is part of the larger Normandy region, known for its lush, green countryside and moderate climate.

Potential for Large-Scale Solar PV

When considering areas nearby that would be most suited to large-scale solar PV installations, several factors come into play. The ideal locations would be relatively flat, open areas with good sun exposure and minimal shading from trees or buildings. The agricultural lands to the north and west of Mont-Saint-Aignan present the most promising opportunities for solar PV development. These areas offer large, unobstructed spaces that could accommodate extensive solar arrays. The gentle slopes in some of these locations could even be advantageous, as south-facing inclines can improve the efficiency of solar panels. However, it's important to note that the region's climate, characterized by frequent cloud cover and moderate sunlight, may impact the overall efficiency of solar installations. Despite this, advances in solar technology have made it increasingly viable to generate solar power even in areas with less-than-ideal sun exposure. Any large-scale solar project would need to carefully balance energy production goals with the preservation of valuable agricultural land and the picturesque Norman landscape. Environmental impact assessments and community consultations would be crucial steps in identifying the most suitable locations for solar PV development in the vicinity of Mont-Saint-Aignan.

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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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.