Koprivnica, Croatia, located at 46.1622° North, 16.8307° East, offers a moderate potential for solar energy generation throughout the year, with significant seasonal variations in output. This location in the Northern Temperate Zone experiences distinct seasons that directly impact solar PV performance.

Seasonal Solar Production

Solar panels in Koprivnica produce varying amounts of electricity depending on the season. During summer, production peaks at 6.79kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 4.69kWh/day. Autumn yields a moderate 3.03kWh/day, while winter shows the lowest output at just 1.68kWh/day per installed kilowatt.

This pattern reveals that Koprivnica's solar potential is highly seasonal, with summer production approximately four times greater than winter production. The location is most ideal for solar generation from May through August, when longer days and higher sun angles maximize energy capture.

Optimal Panel Installation

For fixed solar panel installations in Koprivnica, the ideal tilt angle is 39 degrees facing South. This specific angle has been calculated to maximize year-round energy production based on the location's latitude and seasonal solar patterns. Proper orientation at this angle helps optimize energy capture throughout the year, particularly during the lower-production winter months.

Environmental and Weather Considerations

Several factors may affect solar production in Koprivnica:

• Snow accumulation in winter can significantly reduce output by covering panels, requiring either manual clearing or installation of panels at steeper angles to promote snow sliding
• Fog and low cloud cover, common in the Drava river valley region during autumn and winter mornings, can reduce solar radiation reaching the panels
• Occasional hailstorms during summer thunderstorms pose a risk to panel integrity, making hail-resistant panels a worthwhile investment

To mitigate these challenges, installing panels with self-cleaning surfaces, using microinverters or power optimizers to minimize the impact of partial shading, and ensuring adequate panel spacing for ventilation can help maintain production efficiency. Additionally, a slight increase in the tilt angle beyond the optimal 39 degrees may help with snow shedding in winter, though at a small cost to overall annual production.

While Koprivnica isn't ideal for year-round solar production due to its significant seasonal variations, proper system design can still make solar PV a viable renewable energy option, particularly when summer production can be effectively utilized or stored.

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 29 locations across Croatia. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.

Link: Solar PV potential in Croatia by location

Solar output per kW of installed solar PV by season in Koprivnica

Seasonal solar PV output for Latitude: 46.1622, Longitude: 16.8307 (Koprivnica, Croatia), 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 Koprivnica, Croatia

To maximize your solar PV system's energy output in Koprivnica, Croatia (Lat/Long 46.1622, 16.8307) 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 Koprivnica, Croatia

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 Koprivnica, Croatia. 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
29° South in Summer	49° South in Autumn	60° South in Winter	39° 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 Koprivnica, Croatia

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 Koprivnica, Croatia.

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 Koprivnica, Croatia

The terrain around Koprivnica, Croatia presents a diverse topographical profile that transitions between two distinct landscapes. Located in northern Croatia's Koprivnica-Križevci County, the city sits at the boundary where the Pannonian Plains meet the foothills of the Bilogora mountain range. This geographical positioning creates an interesting blend of flat lowlands and gently rolling hills.

Lowland Areas

To the north and northeast of Koprivnica stretches a predominantly flat expanse, part of the broader Drava River valley. These lowlands feature elevations typically ranging between 130-150 meters above sea level. The terrain here is characterized by fertile agricultural fields, with minimal natural obstacles and generally open landscapes. This flatness extends toward the Hungarian border, creating expansive horizons with minimal shadowing effects from natural features.

Hilly Regions

Moving south and southwest from Koprivnica, the landscape gradually transforms into the undulating foothills of the Bilogora range. These hills become more pronounced as one travels further south, with elevations reaching approximately 250-300 meters above sea level. The terrain features gentle slopes rather than steep inclines, with rounded hilltops covered by a mixture of forests, vineyards, and agricultural plots.

Hydrological Features

The area's topography is further defined by several watercourses, most notably the Drava River flowing to the north of Koprivnica. Smaller streams and drainage channels cross the lowland areas, creating a natural irrigation network across the plains. These waterways have shaped the landscape over time, contributing to the fertile alluvial soils found in the region.

Solar PV Suitability

For large-scale solar photovoltaic installations, the northern and northeastern plains surrounding Koprivnica offer particularly favorable conditions. These areas combine several advantageous characteristics: The flat terrain minimizes installation challenges and reduces construction costs that would otherwise be associated with grading and earthworks. The open landscape experiences minimal shadowing from topographical features, maximizing potential solar exposure throughout the day. Agricultural lands in this region that may be less productive could be repurposed for solar development with minimal environmental impact. Specific locations worth considering include the agricultural plains stretching between Koprivnica and Legrad, as well as the open areas extending toward Đelekovec and Drnje. These locations benefit from good accessibility via existing road networks, proximity to potential grid connection points, and the aforementioned favorable topographical characteristics. The gently sloping southern hills might also accommodate solar installations, particularly on south-facing slopes that receive enhanced solar exposure. However, these areas would likely involve higher development costs due to the need for terrain modifications and potentially greater distances from existing infrastructure. When considering large-scale solar development in this region, it's worth noting that the predominantly agricultural character of the landscape means that careful planning would be required to balance energy production with food security concerns and local land use traditions.

Croatia solar PV Stats as a country

Croatia ranks 84th in the world for cumulative solar PV capacity, with 109 total MW's of solar PV installed. Each year Croatia is generating 27 Watts from solar PV per capita (Croatia ranks 60th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Croatia?

Yes, there are incentives for businesses wanting to install solar energy in Croatia. The Croatian government offers a number of financial incentives and subsidies for businesses that install solar energy systems. These include grants, tax credits, and other forms of support. Additionally, the government has set up a feed-in tariff system which guarantees a certain price per kilowatt hour (kWh) generated from renewable sources such as solar energy. This helps to make investing in solar energy more attractive for businesses.

Do you have more up to date information than this on incentives towards solar PV projects in Croatia? 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.