Jonava, Kaunas, Lithuania, situated at latitude 55.0877 and longitude 24.2946, presents varying conditions for solar PV energy generation throughout the year. This location in the Northern Temperate Zone experiences significant seasonal fluctuations in solar energy production.

Seasonal Solar Production

Solar panels in Jonava perform best during summer months, generating an average of 5.88 kWh per day for each kilowatt of installed capacity. Spring follows as the second most productive season with 3.98 kWh/day. Production drops considerably in autumn to 1.94 kWh/day, while winter sees minimal generation at just 0.87 kWh/day per kilowatt installed.

This pattern creates a pronounced disparity between summer and winter production, with summer yielding nearly seven times more energy than winter months. For practical purposes, this means a 5 kW residential system might generate around 29.4 kWh on an average summer day but only 4.35 kWh on a typical winter day.

Optimal Panel Installation

For fixed solar panel installations in Jonava, Kaunas, the ideal tilt angle to maximize year-round energy production is 46 degrees facing South. This angle has been calculated by analyzing daily solar elevation patterns at this specific latitude and weighting them according to solar irradiance potential.

Environmental Challenges

Several environmental factors can impact solar production in Jonava:

• Snow accumulation during winter months can significantly reduce already low winter production if not addressed
• Frequent overcast conditions in autumn and winter further diminish energy generation
• Potential for frost and ice formation on panels during cold months

Preventative Measures

To optimize solar energy production in Jonava's challenging environment, consider these preventative measures:

• Install panels at the recommended 46-degree angle to facilitate natural snow sliding and maximize year-round production
• Implement snow removal protocols during winter months
• Consider bifacial solar panels that can capture reflected light from snow cover
• Use high-efficiency panels rated for low-light conditions to improve autumn and winter performance
• Ensure proper system sizing that accounts for the significant seasonal production differences

While Jonava isn't ideal for year-round solar production due to its northern latitude and associated seasonal variations, a properly designed system can still provide meaningful energy generation, particularly from late spring through early autumn when approximately 70% of the annual solar energy is produced.

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

Link: Solar PV potential in Lithuania by location

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

Seasonal solar PV output for Latitude: 55.0877, Longitude: 24.2946 (Jonava, Lithuania), 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 46° South in Jonava, Lithuania

To maximize your solar PV system's energy output in Jonava, Lithuania (Lat/Long 55.0877, 24.2946) throughout the year, you should tilt your panels at an angle of 46° 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 Jonava, Lithuania

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 Jonava, Lithuania. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 46° South tilt angle throughout the year.

Overall Best Summer Angle	Overall Best Autumn Angle	Overall Best Winter Angle	Overall Best Spring Angle
38° South in Summer	57° South in Autumn	67° South in Winter	47° 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 Jonava, Lithuania

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 Jonava, Lithuania.

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 Jonava, Lithuania

Jonava, Lithuania, situated at 55.0877° North, 24.2946° East, is characterized by a predominantly flat to gently rolling topography typical of the central Lithuanian lowlands. The landscape around Jonava features modest elevation changes with an average altitude of approximately 50-60 meters above sea level. This region is part of the Middle Lithuanian Lowland, a geographic area defined by its relatively uniform terrain with occasional minor hills and shallow valleys. The Neris River, one of Lithuania's major waterways, flows through Jonava, creating a shallow valley that represents one of the few significant topographical features in the immediate vicinity. The river has shaped the surrounding landscape over time, creating mild slopes and terraces along its banks. These riverside areas tend to be a few meters lower than the surrounding terrain.

Surrounding Terrain Features

The broader region around Jonava consists primarily of agricultural fields, scattered forests, and occasional wetlands. To the north and east of the city, the land remains predominantly flat with a mixture of cultivated fields and patches of forest. The southern and western approaches to Jonava feature similarly level terrain with only subtle undulations. Small streams and drainage canals crisscross the landscape, but these create minimal topographic variation. The region lacks dramatic hills or valleys, making the overall impression one of an open, expansive landscape with long sightlines in many directions.

Soil Composition

The soils around Jonava are mainly composed of glacial deposits, including loam and sandy loam, reflecting the area's geological history as part of a post-glacial plain. These soils have moderate drainage capabilities, with some areas featuring more clay-rich composition that can retain moisture longer after precipitation events.

Optimal Areas for Solar PV Development

For large-scale solar photovoltaic installations, the areas south and southwest of Jonava offer particularly favorable conditions due to their combination of topographical and practical features: The flat, open agricultural lands approximately 5-10 kilometers south of Jonava present minimal shading concerns and would require little land preparation. These areas feature large, contiguous parcels currently used for farming that could be repurposed or used in dual-purpose applications combining agriculture with solar energy production. The slightly elevated plateaus to the southwest, while still modest in height, offer marginally better exposure to sunlight throughout the day. These subtle elevations can reduce morning and evening shadowing effects compared to completely flat terrain. Areas with well-drained sandy loam soils would provide better foundation conditions for solar array installations, reducing concerns about seasonal ground shifting or water accumulation. Several such zones can be found in the southwestern quadrant from Jonava.

Considerations for Solar Development

While the generally flat topography around Jonava is advantageous for solar development from a construction standpoint, the landscape does present certain challenges. The lack of natural windbreaks in many of the open agricultural areas means that solar installations would need to be engineered to withstand the region's periodic strong winds. The proximity to the Neris River valley should be approached with caution, as these lower-lying areas may be subject to seasonal fog formation that could temporarily reduce solar efficiency. Additionally, areas immediately adjacent to the river may face flooding risks during spring thaws. The optimal locations would balance distance from urban areas (to minimize land acquisition costs) with proximity to existing electrical infrastructure. Several electrical transmission corridors run through the region, particularly to the south and west of Jonava, making these areas logistically advantageous for grid connection of new solar facilities.

Lithuania solar PV Stats as a country

Lithuania ranks 61st in the world for cumulative solar PV capacity, with 338 total MW's of solar PV installed. Each year Lithuania is generating 121 Watts from solar PV per capita (Lithuania ranks 36th in the world for solar PV Watts generated per capita). [source]

Are there incentives for businesses to install solar in Lithuania?

Yes, there are incentives for businesses wanting to install solar energy in Lithuania. The Lithuanian government offers a range of financial incentives and tax breaks for businesses that invest in renewable energy sources such as solar power. These include grants, loans, and tax credits. Additionally, the government has set up a feed-in tariff system which guarantees a fixed price for electricity generated from renewable sources such as solar power. This helps to make investing in solar energy more attractive to businesses.

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