In total 49 new generation 12-meter Irizar ie (in 3 doors, 23 seat configuration) will be delivered, starting by the end of this year. The basic overnight charging option suggests that the buses are long-range versions, envisioned to cover the entire shift on a single charge.
The Spanish manufacturer already delivered electric buses to several French cities, including Amiens, Bayonne, Aix-en-Provence, Marseille and Le Havre (soon also Orleans). After the latest Mercedes-Benz order, it seems that the French market is highly diversified in terms of suppliers.
Here are examples of the Irizar ie bus:
A quick look at the Irizar's assembly plant: