Tunisia Allows Household Solar Battery Systems Amid Energy Strain

Tunis, Tunisia – In a significant shift for renewable energy adoption, the Tunisian Society of Electricity and Gas (STEG) has officially authorized the integration of battery storage systems into household photovoltaic installations connected to the low-voltage grid. This new technical framework marks a crucial step forward for individuals and businesses utilizing solar power.

Previously, the use of storage batteries with STEG-connected solar systems was prohibited. This limitation prevented users from retaining solar energy produced during daylight hours for later use. The new regulation, however, enables installations to incorporate storage solutions under specific technical conditions defined by STEG. The primary goals are to boost the rate of self-consumption of locally produced solar energy and to offer a backup power option during grid interruptions.

This decision arrives at a time of considerable strain on Tunisia's national electrical system. Recent weeks have seen rolling blackouts in several regions, attributed to an exceptional surge in demand, particularly driven by high temperatures. The updated STEG guidelines detail the technical requirements for these battery systems, focusing on safety, compatibility between batteries and inverters, and necessary documentation for project reviews.

Despite this regulatory advancement, the high cost of battery technology presents a substantial obstacle. Industry professionals estimate that a complete system, including batteries, a suitable inverter, and associated equipment, can range from 18,000 to 30,000 Tunisian dinars, depending on the desired storage capacity. While solar energy storage is now officially part of Tunisia's photovoltaic ecosystem, its widespread adoption by households may initially be limited to those with significant investment capacity.