Solar Energy Potential in Romania

Country or Region Overview

Country or Region: Romania

Capital: Bucharest

Total Population: 19 million (as of 2025)

Geographical Location: Romania is located in Southeastern Europe, bordered by Ukraine to the north, Bulgaria to the south, Serbia to the southwest, Hungary to the west, and Moldova to the east. Romania also has a coastline along the Black Sea to the southeast.

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Solar Irradiation Data in Romania

Romania experiences a moderate climate for solar power generation, with annual average solar irradiation levels ranging from 3.5 kWh/m²/day to 4.5 kWh/m²/day. The country enjoys a fair number of sunny days, particularly in the southern and eastern regions, making it a viable location for both residential and commercial solar installations.

Key Solar Irradiation Data:

Annual Solar Irradiation: Around 4.0 kWh/m²/day on average
High Irradiation Regions: Southern and southeastern Romania, especially around Bucharest and Constanța
Peak Irradiation: Up to 4.5 kWh/m²/day in certain regions during summer months

Romania’s solar energy potential is growing, especially as the country focuses more on renewable energy as part of its EU commitments.

If you need to learn more solar power potential in Romania, please feel free to contact Solarvance for more details.

Temperature Factors in Romania

Temperature Factors:
- Average Annual Temperature: Romania has a temperate-continental climate, with temperatures ranging between 5°C (41°F) and 15°C (59°F) annually. Summer temperatures can reach up to 35°C (95°F) during heatwaves, while winter temperatures can drop below -10°C (14°F) in some areas.
- Impact on Solar Panels: While the country experiences seasonal temperature fluctuations, the moderate temperatures are generally favorable for solar panel performance. However, during extreme winter months, snow accumulation on solar panels may reduce efficiency. To mitigate this, solar systems designed for cold climates, with features like snow-resistant coatings, are recommended.
Recommendation: Solar panels with low-temperature coefficients and efficient snow-shedding designs are ideal for the colder months.

Energy Demand and Grid Situation in Romania

National Energy Demand: Romania’s energy consumption has been increasing steadily with urbanization and industrial growth. Traditionally, the country has relied on coal and hydropower for electricity generation. However, Romania has committed to increasing its renewable energy share, aligning with the EU’s renewable energy targets.
Grid Infrastructure: Romania has a well-developed electricity grid, particularly in urban areas, but challenges exist in rural or isolated regions. Romania is actively integrating more renewable energy into its grid to reduce reliance on fossil fuels.
Opportunities from Global Events: Romania is hosting several major international events in the coming years, which could increase demand for sustainable energy solutions, especially in the tourism and infrastructure sectors.

Preferred System Type in Romania

Grid-Connected Systems: With Romania’s well-established grid, grid-connected systems are an excellent option for both residential and commercial applications. These systems allow users to take advantage of net metering, reducing electricity costs by feeding excess energy back into the grid.
Off-Grid Systems: In rural areas or for isolated applications like agricultural farms, off-grid solar systems paired with battery storage can provide reliable power, especially during winter months when sunlight hours are reduced.
Hybrid Systems: Hybrid systems combining solar panels and energy storage are suitable for businesses that need uninterrupted power, even in winter months or cloudy periods.

Dust and Sand Factor in Romania

Dust and Sandstorms: Romania does not face significant dust or sandstorm challenges like desert countries, as it has a temperate climate. However, dust from agricultural activities and urban areas can still accumulate on solar panels, reducing their efficiency.
Recommendation: Routine cleaning of panels and installing systems with self-cleaning features or protective coatings will help maintain performance, especially in the more industrialized regions.

Humidity and Rainfall (Humidity Factor) in Romania

Humidity Levels: Romania experiences a moderate level of humidity throughout the year, with the highest levels along the coast and in areas with heavy rainfall. The southern and southeastern regions, such as Bucharest, tend to have lower humidity.
Impact on Solar Panels: While Romania’s climate is generally favorable for solar energy, high humidity in coastal areas could lead to condensation and potential corrosion in panel components. This is not a major concern but should be considered in the design of systems located in coastal areas.
Recommendation: Using corrosion-resistant materials for installations near the Black Sea is essential to prevent degradation over time.

Ocean (Salt Corrosion Factor) in Romania

Saltwater Corrosion: Romania has a coastline along the Black Sea, and regions near the coast could be exposed to saltwater corrosion. However, the extent of this is minimal compared to countries with extensive coastlines.
Recommendation: In coastal areas, it is advisable to use marine-grade materials and ensure that solar panels and mounting structures are protected with anti-corrosion coatings to extend their lifespan.

Government Policies and Solar Incentives in Romania

Romania has made significant strides in promoting renewable energy through various policies and incentives to support solar energy development:

Green Energy Program: The Romanian government offers financial incentives for renewable energy projects, including grants for residential solar panel installations under the “Green House” program.
Feed-in Tariffs: Romania has implemented feed-in tariffs, allowing solar energy producers to sell excess electricity back to the grid at a guaranteed price, which makes investing in solar energy financially attractive.
EU Renewable Energy Targets: As part of the EU’s renewable energy goals, Romania is committed to increasing its renewable energy capacity, which presents significant opportunities for solar projects.

ROI on Solar Systems in Romania

ROI Period: Solar systems in Romania typically offer an ROI period of 6 to 8 years, depending on system size, location, and available subsidies. The combination of government incentives and favorable solar irradiation levels makes solar energy a financially viable option for residential and commercial customers.
Long-Term Savings: After the ROI period, users can expect substantial savings on electricity bills. With Romania’s increasing electricity prices, solar systems can help reduce energy costs by up to 60% or more over their 25+ years of lifespan.

Conclusion on Solar Power in Romania

Romania’s solar energy potential is growing, with favorable government policies, moderate solar irradiation levels, and a commitment to increasing renewable energy capacity. The country offers significant opportunities for solar energy solutions, both for residential and commercial installations.

For businesses, homeowners, and large-scale developers, now is the ideal time to invest in solar energy systems tailored to Romania’s unique climate and energy needs. Solarvance team is ready to provide customized solar power solutions for Romania’s growing solar market.

Choose Solarvance for Your Solar System

Contact us today to explore customized solar solutions for your needs, whether you’re interested in grid-connected, off-grid, or hybrid solar systems. Our team at Solarvance is here to guide you through every step of the process, from system design to installation and maintenance.