Marghita, Bihor County, Romania presents a moderately suitable location for solar PV energy generation, though with significant seasonal variations typical of its Northern Temperate Zone climate. Located at coordinates 47.3526°N, 22.3289°E, this area experiences substantial differences in solar energy potential throughout the year.
Seasonal Solar Performance
The solar energy output at Marghita varies dramatically across the seasons. Summer provides the strongest performance at 6.60 kWh per day per kW of installed capacity, making it an excellent time for solar generation. Spring offers good production levels at 4.76 kWh per day per kW, representing the second-best season for solar energy harvest. Autumn sees a notable decline to 3.06 kWh per day per kW of installed solar capacity. Winter presents the most challenging period, with output dropping significantly to just 1.22 kWh per day per kW, reflecting the reduced daylight and lower sun angles characteristic of this northern latitude.Optimal Installation Configuration
For maximum year-round energy production at Marghita, Bihor County, solar panels should be installed at a fixed tilt angle of 40 degrees facing south. This angle has been calculated to optimize total annual solar output by accounting for the sun's varying elevation throughout the year and weighting these angles based on actual solar irradiance data.Local Factors Affecting Solar Production
Several environmental and weather factors in Marghita could potentially impact solar panel performance:- Snow accumulation during winter months can block panels and reduce output
- Frequent cloud cover and fog, particularly during autumn and winter seasons
- Dust and pollen buildup during spring and summer months
- Potential for ice formation on panels during cold periods
Preventative Measures for Enhanced Performance
To maximize solar energy production despite these challenges, several installation strategies can be employed:- Install panels with adequate spacing and proper mounting to allow natural snow shedding
- Implement a regular cleaning schedule, particularly during high-pollen seasons
- Consider installing panels at the recommended 40-degree angle to promote self-cleaning through precipitation
- Ensure proper drainage around panel installations to prevent ice dam formation
- Use high-quality panels rated for cold weather performance
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 114 locations across Romania. This analysis provides insights into each city/location's potential for harnessing solar energy through PV installations.
Link: Solar PV potential in Romania by location
Solar output per kW of installed solar PV by season in Marghita
Seasonal solar PV output for Latitude: 47.3526, Longitude: 22.3289 (Marghita, Romania), 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 40° South in Marghita, Romania
To maximize your solar PV system's energy output in Marghita, Romania (Lat/Long 47.3526, 22.3289) throughout the year, you should tilt your panels at an angle of 40° 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 Marghita, Romania
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 Marghita, Romania. As mentioned earlier, for fixed-panel solar PV installations, it is optimal to maintain a 40° South tilt angle throughout the year.
| Overall Best Summer Angle | Overall Best Autumn Angle | Overall Best Winter Angle | Overall Best Spring Angle |
|---|---|---|---|
| 31° South in Summer | 51° South in Autumn | 61° South in Winter | 40° 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 Marghita, Romania
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 Marghita, Romania.
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 Marghita, Romania
Topographical Features of the Marghita Region
The area surrounding Marghita in northwestern Romania is characterized by gently rolling hills and relatively flat terrain that forms part of the broader Pannonian Plain. This landscape represents a transitional zone between the more mountainous regions to the south and east and the extensive lowlands that stretch across much of Hungary to the west. The elevation around Marghita typically ranges from 150 to 300 meters above sea level, creating a moderately undulating topography that is neither too steep nor completely flat. The region features a mix of agricultural land, scattered forests, and small settlements connected by a network of rural roads and more substantial transportation corridors. The Crasna River flows through the broader area, creating some minor valleys and floodplain areas, though these represent relatively small portions of the overall landscape. Most of the terrain consists of gentle slopes and plateau-like areas that have been extensively cultivated for agriculture over many centuries.Optimal Areas for Large-Scale Solar Development
The most suitable locations for large-scale solar photovoltaic installations would be the extensive flat to gently sloping agricultural areas that dominate the landscape south and west of Marghita. These areas offer several advantages including minimal grading requirements, excellent accessibility for construction and maintenance equipment, and typically clear sightlines without significant natural obstructions. The plateau areas and broad hilltops scattered throughout the region would also present excellent opportunities for solar development. These elevated positions often provide good exposure while maintaining relatively flat surfaces suitable for solar panel arrays. The gentle nature of most slopes in the area means that even moderately inclined terrain could accommodate solar installations with proper positioning to optimize panel orientation. Areas closer to existing electrical infrastructure and transportation networks would be particularly advantageous for development. The flatter agricultural zones that lie between Marghita and the surrounding smaller communities often benefit from existing road access and proximity to electrical distribution systems, reducing the infrastructure investment required for large-scale solar projects. The forested areas and steeper valley slopes near waterways would be less suitable for large-scale solar development due to shading concerns, environmental considerations, and the additional costs associated with tree removal and terrain modification. Similarly, areas prone to seasonal flooding near the river systems would present challenges for permanent solar installations.Romania solar PV Stats as a country
Romania ranks 39th in the world for cumulative solar PV capacity, with 1,398 total MW's of solar PV installed. This means that 3.40% of Romania's total energy as a country comes from solar PV (that's 24th in the world). Each year Romania is generating 74 Watts from solar PV per capita (Romania ranks 43rd in the world for solar PV Watts generated per capita). [source]
Are there incentives for businesses to install solar in Romania?
Yes, there are incentives for businesses wanting to install solar energy in Romania. The Romanian government offers a number of financial incentives and subsidies for businesses that invest in renewable energy sources such as solar power. These include grants, tax deductions, and other forms of support. Additionally, the government has set up a Renewable Energy Support Scheme (RES) which provides additional funding for projects related to renewable energy sources such as solar power.
Do you have more up to date information than this on incentives towards solar PV projects in Romania? Please reach out to us and help us keep this information current. Thanks!
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Article Details for Citation
Author: Aaron Robinson
Publisher: profileSOLAR.com
First Published: Saturday 9th of August 2025
Last Updated: Sunday 10th of August 2025
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Compare this location to others worldwide for solar PV potential
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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.
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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.




