STEG has built 20 power plants (combined cycle,
steam and gas turbine, hydraulic, and wind). The
choice of technologies is governed by for the
optimal solutions regarding reliability,
availability, cost and clean energy.
| THERMAL STEAM 40,1%
| Combined cycle 29,2%
| Gas Turbine 28,2%
| Hydraulic 2.1%
| Aeolian 0,4%
In order to contribute to environment protection,
STEG integrated the wind energy among its choices.
Thus, a first wind power station of 20 MW was
put into operation from 1999 in Sidi Daoud in
the North East of the country. Besides, STEG plans
to implement a second project with an additional
capacity of 40 MW in 2006.
STEG transmission network
involves 60 HV substations and about 5000 km of HV lines.
Aware of the network reliability , STEG introduced
hot line working on HV network and digital techniques in the protection system
of HV lines.
STEG transmission network is connected to Europe
through Algerian and Moroccan networks. Interconnection
with Libya will allow to extend the synchronous zone
with Machrek countries till Syria through Libya,
Egypt and Jordan.
The expected opening of the electricity market
within this decade will justify the construction
of well-sized transmission channels between neighboring
A feasibility study of a transmission line from
Egypt up to Morocco has already been started in
order to evaluate the benefits granted and
to determine the necessary enhancements for insuring
A link between Tunisia and Italy is still a solution
to be considered in order to enhance the opportunities
of commercializing energy between the two shores
of the Mediterranean.
More than 120 000 km of medium voltage and low
voltage lines have been settled by STEG to distribute
electricity all over the country.
is present all over Tunisia
STEG is supplying more than 2
500 000 customers
with electricity (domestic, professional, industrial, agricultural,
administrative). It keeps up relationships with
its customers through 34 districts and 79
agencies. The global electrification rate of the
country (urban and rural) is 96%.
Within the coming years, efforts will be essentially
focused on improving the urban networks and modernizing
the network system operation, while contributing
to a clean environment and preserving the aesthetic
side of cities.
STEG is also upgrading its customer management
system while keeping on its assistance action
to local suppliers for setting up a quality system
based on ISO 9000 standards.