Solar Energy: Tunisia’s Path to Energy Security and Growth

Country or Region Overview

Country or Region: Republic of Tunisia

Capital: Tunis

Total Population: Approximately 12.4 million (as of 2025)

Geographical Location: Tunisia is located in North Africa, bordered by Algeria to the west, Libya to the southeast, and the Mediterranean Sea to the north and east. The country has a diverse geography, ranging from the humid coastal plains in the north to the arid Sahara desert in the south. With strong solar resources, a modernizing energy sector, and ambitious renewable energy goals, Tunisia is rapidly advancing as a solar energy leader in the Maghreb region.

Solar resource map copyright at 2021 Solargis. Licensed under the Creative Commons Attribution license (CC BY-SA 4.0). This is a solar resource map from Solargis. For a higher resolution map, please visit and download.

Solar Irradiation Data in Republic of Tunisia

Tunisia benefits from excellent solar irradiation, especially in the southern and central desert regions where skies are clear year-round.

Key Solar Irradiation Data:

Annual Solar Irradiation: Ranges from 5.0 to 7.0 kWh/m²/day
Sunshine Hours: Over 3,000 to 3,400 hours/year
Best Locations: Kebili, Tataouine, Tozeur, Gafsa, and Kairouan

These conditions make Tunisia highly favorable for utility-scale PV plants, off-grid solar, and hybrid solar projects.

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

Temperature Factors in Republic of Tunisia

Tunisia’s climate varies by region, with hot desert conditions in the south and Mediterranean climates in the north.

Southern desert regions: Temperatures reach 40°C+ during summer
Northern coastal areas: Average between 20°C and 32°C

System design guidelines:

Use low-temperature coefficient PV modules
Ensure adequate airflow in desert installations
Shade and insulate inverters and batteries to prevent overheating

The thermal environment supports high solar output with careful system planning.

Energy Demand and Grid Situation in Republic of Tunisia

Tunisia has a high electrification rate, above 99%, but its power sector depends heavily on natural gas and energy imports.

Utility operator: Société Tunisienne de l’Électricité et du Gaz (STEG)
Grid reliability: Strong in urban centers, weaker in remote or desert regions
Government plans to reach 30% renewable energy share by 2030

Solar energy is a strategic priority for reducing fuel imports and improving grid sustainability.

Preferred System Type in Republic of Tunisia

Tunisia supports both urban grid-connected and remote off-grid systems, making it suitable for:

Grid-Tied Rooftop Systems: In Tunis, Sfax, Sousse, and other cities
Hybrid Solar Systems: For industries, hotels, and agriculture
Off-Grid Systems: For remote villages, pumping stations, and desert facilities
Utility-Scale PV Plants: In southern desert zones for national grid support

Battery storage enhances energy reliability and self-consumption in both grid-connected and off-grid applications.

Dust and Sand Factor in Republic of Tunisia

Dust is a significant issue in southern and inland Tunisia, especially near the Sahara.

Maintenance strategies:

Clean modules every 2–3 weeks in dusty zones
Use tilted racking systems to reduce buildup
Apply anti-soiling coatings where regular cleaning is not feasible

Northern coastal areas are less affected due to periodic rainfall.

Humidity and Rainfall (Humidity Factor) in Republic of Tunisia

Humidity levels vary between the coastal north and dry south.

Northern Tunisia: Humidity up to 80–90% in winter and spring
Southern regions: Very dry, with annual rainfall below 200 mm

Protection guidelines:

Use IP66-rated enclosures and UV-stable cabling in humid zones
Elevate electronics in regions with flash flooding during winter rains

Humidity concerns are generally localized to the coast.

Ocean (Salt Corrosion Factor) in Republic of Tunisia

Salt corrosion is a concern in coastal zones, including Tunis, Bizerte, and Sfax, due to sea breeze exposure.

Recommendations:

Use marine-grade aluminum and stainless steel hardware
Apply anti-corrosion coatings to metallic components
Conduct routine inspections on installations within 5 km of the coastline

Interior installations face no salt-related issues.

Government Policies and Solar Incentives in Republic of Tunisia

Tunisia has enacted strong policy frameworks to support solar development.

Key highlights:

National Solar Plan targets 3.8 GW of solar capacity by 2030
Net metering scheme allows consumers to offset grid electricity costs
Investment incentives under the Renewable Energy Law (2015)
Tax exemptions and customs duty waivers on solar equipment for approved projects
Growing support for independent power producers (IPPs) and public-private partnerships

The government encourages both residential and industrial solar investment.

ROI on Solar Systems in Republic of Tunisia

Solar energy in Tunisia offers attractive ROI, especially where it reduces grid dependence and offsets high daytime tariffs.

ROI Period:
- Residential rooftop systems: 4–6 years
- Commercial hybrid or utility-scale projects: 5–8 years
Post-ROI Benefits: Long-term energy cost savings and greater energy autonomy
Financing Options: Available through banks, international funds, and climate-related finance

Solar investment is well-aligned with Tunisia’s economic and environmental goals.

Conclusion on Solar Power in Republic of Tunisia

Tunisia offers a mature and high-potential market for solar energy, backed by strong sunlight, clear government policies, and a need to diversify its energy mix. From urban rooftops in Sousse to desert farms in Tataouine, solar is becoming essential for reliable and sustainable power.

At Solarvance, we provide desert-ready, corrosion-resistant solar systems tailored for Tunisia’s diverse conditions. Whether you’re powering a warehouse in Gabès, a hotel in Hammamet, or a farm in Kairouan, our systems offer reliability, high efficiency, and long-term returns.

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.