Tunisia’s national electricity production increased by 6% during the first five months of 2026, reaching 7,506 GWh, including renewable self-generation, compared with 7,067 GWh in the same period of 2025, the National Observatory of Energy and Mines (ONEM) said in its May 2026 Economic Outlook report.
Electricity production supplied to the domestic market rose by 4% over the period. Meanwhile, electricity imports, mainly from Algeria, covered 9% of Tunisia’s domestic electricity demand through the end of May.
State-owned utility STEG remained the country’s dominant electricity producer, accounting for 91% of national generation.
Electricity generated from renewable energy sources represented 9% of total national production.
Tunisia also continued expanding its solar capacity, with around 485 MW of residential rooftop photovoltaic installations in operation by the end of May 2026, alongside 130 MW of medium- and high-voltage solar installations serving the industrial, commercial and agricultural sectors.
Peak electricity demand declined by 1%, falling to 3,182 MW at the end of May 2026 from 3,211 MW a year earlier.
Overall electricity sales remained broadly stable compared with the same period in 2025. Sales to high-voltage customers fell 6%, while sales to medium-voltage customers edged down 1%.
The report noted that electricity consumption in the low-voltage segment, which is predominantly residential and accounts for around 75% of such sales, cannot be accurately assessed because billing is issued every two months and nearly half of consumption is estimated rather than metered.
Industry remained Tunisia’s largest electricity consumer, accounting for 60% of total demand from high- and medium-voltage customers through the end of May.
Among industrial users, electricity consumption declined in several sectors, notably the chemical and petroleum industries, where sales fell 6%, and the construction materials industry, which recorded a 4% decline.
By contrast, electricity sales increased in the paper and publishing industry (+7%) and for agricultural pumping (+6%).
