The town is particularly notable for its power plant and accompanying desalination unit.[2] A fishing port recently built there, originally scheduled to open in 2007, became fully operational only in 2016 due to problems with sand accumulation.[3]
After thePunic Wars, it fell underRoman control. Its name wasLatinized asCissi and it was placed into theprovince ofMauretania Caesariensis. It appeared on theTabula Peutingeriana.[7] The ruins of a 4th or 5th-century Christian church could still be easily distinguished at Cape Djinet up to the 19th century, but little trace now remains.[7]
After 484, it disappears from written sources for several centuries, including the 7th-8th centuryMuslim conquest of the Maghreb, only to reappear in the 11th century work ofal-Idrisi under the new name ofJannād, after aBerber tribe then living in the area.[8] It was known to medieval European geographers asBerengereto. By the 18th century, Djinet was a small port town serving the farmers of the surrounding lowlands, described byThomas Shaw in the following terms:
...we come to the little port of Jinnett, from which a great quantity of grain is shipped off yearly to Christendom. Jinnett is a small creek, with tolerably good anchoring grounds before it; and was probably Edrisi's Mers' el Dajaje, orPort of Hens. I was told that Jinnett, orParadise, was given to this place, on account of a row-boat, which was once very providentially conducted within the creek, when the mariners expected every moment to have perished upon the neighbouring rocks.[9]
The area was conquered by France in 1837 in the wake of theFirst Battle of the Issers, and remained under French rule until Algeria's independence in 1962.
In 1986, a gas-powered thermal power plant was commissioned at Djinet, manufactured bySiemens with a capacity of 704 MW.[10]
At aConference of Carthage (411) between Catholic and schismaticDonatist bishops, where their heresy was condemned as such, Cissi was represented only by a Donatist bishop named Flavosus. TheLatin adjective referring to Cissi,Cissitanus, is applied to him in the account of that conference. In the 19th century, Morcelli took the adjectiveCessitanus to refer to Cissi, and supposed instead that the name of the Cissi bishop at the conference was Quodvultdeus, whom Ferron rather attributed to the see ofCissita,[7][11] which was inAfrica Proconsularis and presently inTunisia (Sidi-Tabet?).
Djinet is connected to the rest of the country through a single main road: RN 24, a coastal road leading toAlgiers in the west (viaZemmouri) andBejaia in the east (viaDellys).[13]