Oullins, France, located in the Northern Temperate Zone at coordinates 45.7213, 4.8039, presents a moderately favorable location for year-round solar photovoltaic energy generation, though with significant seasonal variations that potential solar installers should carefully consider.

Seasonal Solar Performance

The solar energy output at this location varies dramatically throughout the year. Summer provides the strongest performance at 6.21 kWh per day per kW of installed solar capacity, making it the peak season for energy generation. Spring follows as the second-best performing season with 5.31 kWh per day per kW, offering substantial energy production as daylight hours increase and weather conditions improve. Autumn shows a notable decline to 3.13 kWh per day per kW as the region transitions toward winter conditions. Winter presents the most challenging period for solar generation, dropping significantly to just 1.63 kWh per day per kW of installed capacity.

Optimal Installation Configuration

For maximum year-round solar energy production at Oullins, solar panels should be installed at a fixed tilt angle of 39 degrees facing south. This angle has been calculated to optimize total annual energy output by accounting for the sun's varying elevation throughout the year and weighting these angles based on actual solar irradiance data.

Local Environmental Factors

Several environmental and weather factors in the Oullins area can potentially impact solar energy production:

• Frequent cloud cover and overcast conditions, particularly during autumn and winter months, which can significantly reduce solar irradiance
• Fog formation common in the Rhône Valley region, especially during cooler months, creating additional atmospheric interference
• Precipitation and snow accumulation during winter that can block panel surfaces
• Air pollution from the nearby Lyon metropolitan area that may create atmospheric haze reducing solar efficiency

Preventative Measures for Enhanced Production

To maximize solar energy production despite these challenges, several installation strategies should be considered: Installing panels with adequate spacing and tilt allows rain and melting snow to naturally clear debris and buildup from panel surfaces. Regular maintenance scheduling becomes particularly important during autumn and winter months when atmospheric conditions are most challenging. Choosing high-quality panels with anti-reflective coatings can help capture more available light during overcast conditions. Additionally, installing micro-inverters or power optimizers can help maintain system performance even when individual panels experience partial shading or reduced efficiency due to weather conditions. Proper ventilation around panels helps prevent moisture buildup and allows for better cooling during warmer months, maintaining optimal efficiency. Strategic placement away from potential sources of shading, such as nearby buildings or vegetation, becomes especially critical given the already reduced winter production levels.

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 Oullins

Seasonal solar PV output for Latitude: 45.7213, Longitude: 4.8039 (Oullins, 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 39° South in Oullins, France

To maximize your solar PV system's energy output in Oullins, France (Lat/Long 45.7213, 4.8039) throughout the year, you should tilt your panels at an angle of 39° 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 Oullins, 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 Oullins, France. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 39° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
30° South in Summer	49° South in Autumn	59° South in Winter	38° 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 Oullins, 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 Oullins, 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 Oullins, France

Topographical Features Around Oullins

Oullins sits in the Rhône-Alpes region of southeastern France, positioned on the southwestern outskirts of Lyon within the broader Rhône Valley. The town occupies a transitional zone between the relatively flat valley floor and the beginning of the Monts du Lyonnais hills that rise to the west. This location creates a gently undulating landscape with elevations ranging from approximately 160 meters near the Rhône River to around 300 meters on the higher western slopes.

The immediate topography features a series of low hills and plateaus that gradually ascend from the river valley toward the foothills of the Massif Central. These elevated areas are interspersed with small valleys and gentle slopes that have been shaped by centuries of agricultural use and urban development. The terrain becomes more pronounced as one moves westward from Oullins, where the landscape transitions into the characteristic rolling hills of the Lyonnais countryside.

The Rhône River, flowing northward through Lyon just a few kilometers to the east, has historically influenced the local topography through sediment deposition and erosion patterns. This has created relatively stable, well-drained soils on the higher ground while leaving flatter, potentially flood-prone areas closer to the river valley.

Optimal Areas for Large-Scale Solar Development

The elevated plateaus and south-facing slopes west and southwest of Oullins present the most favorable conditions for large-scale solar photovoltaic installations. These areas benefit from their position on the western edge of the Rhône Valley, where the terrain rises sufficiently to provide excellent solar exposure while remaining accessible for construction and maintenance activities.

The gently rolling hills extending toward communities like Chaponost and Brindas offer particularly suitable sites. These locations combine favorable topographical characteristics with sufficient distance from dense urban areas, making land acquisition more feasible for utility-scale projects. The moderate slopes in this region allow for optimal panel positioning to maximize solar collection throughout the day and across seasons.

Areas around the communes of Saint-Genis-Laval and Francheville, situated on similar elevated terrain south and southwest of Oullins, also present excellent potential. The topography in these zones provides natural drainage, reducing concerns about water accumulation around solar installations, while the elevation ensures minimal shading from surrounding landscape features.

The flatter areas closer to the Rhône Valley, while offering easier construction access, may be less suitable for large-scale solar development due to their proximity to urban infrastructure, potential flood risk considerations, and the premium value of this land for other development purposes. Additionally, the higher elevations west of Oullins generally experience better air circulation, which can help maintain optimal operating temperatures for photovoltaic panels.

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.