>1962 Creation of the SA et development of the electromechanical construction activity.
Manpower : 15 people.
Activities : Distribution of measuring devices. Manufacture of rectifiers, didactic units and power supplies.
->1970 Beginning of electronics integration in some products.
Manpower : 25 people.
Activities : Distribution of measuring devices. Manufacture of rectifiers, power supplies and first test benches.
Manpower : 18 people.
Activités : Distribution of measuring devices. Manufacture of test benches and didactic units.
BQ: 12.500.000 Frs
-> 2012 Acquisition of Electrona by the PUISSANCE + Group
Number of employees: 90 people - turnover 11 M €
-> 2013 Electrona leaves the site of Lingolsheim to join the industrial zone of Entzheim in a more suitable premises and environment.
-> 2015 Purchase of the Power + group by the SPHEREA group Tests & Services
Number of employees: 600 people - turnover 110 M€
-> 2017 Electrona merges with PUISSANCE PLUS. The two production sites of Entzheim and Montauban are under the brand name PUISSANCE PLUS.