A consortium of Norway's Scatec and Japan's Aeolus, a unit of Toyota Tsusho, will develop a 100 MW PV plant near Mazouna in Sidi Bouzid Governorate, all equiped with Battery Energy Storage System (BESS)
[pdf] 
“Storage” refers to technologies that can capture electricity, store it as another form of energy (chemical, thermal, mechanical), and then release it for use when it is needed. Lithium-ion batteriesare one such technology. Although using energy storage is never 100% efficient—some energy is always lost in converting. .
Pumped-storage hydropoweris an energy storage technology based on water. Electrical energy is used to pump water uphill into a reservoir when energy demand is low. Later,. .
The most common type of energy storage in the power grid is pumped hydropower. But the storage technologies most frequently coupled with solar power plants are electrochemical storage (batteries) with PV plants and thermal storage (fluids) with CSP plants.. .
Many of us are familiar with electrochemical batteries, like those found in laptops and mobile phones. When electricity is fed into a battery, it causes a chemical reaction, and energy is stored. When a battery is discharged, that chemical reaction is.
[pdf] Tunisia is planning to embrace pumped storage, considered the most mature of the stationary energy storage technologies, but also the most expensive. A project has therefore been launched in Tabarka to create a pumped-storage energy transfer station (STEP) to generate hydroelectricity.
[pdf] 
