Egypt’s Saving System says its technology can result in big savings on corporate electrical bills.

At the heart of its product are special capacitors – devices which store electrical energy. Saving System says that, when wired up, the capacitors can make electricity use more efficient, saving the customer’s money and carbon emissions.

With decades of work behind the tech, Saving System’s chief executive Ahmed Alwakil says that launching new tech products requires “patience”.

This is the fourth of a five-part series on technology in Africa.