Sir Georges,
Let talk about power generation,
I had done some visit to Power Generation Control Room during my university year. I donno if this is concept is wrong or correct. The Technician said that, the generator produce active and reactive power. But, production of reactive power is limited to provide extra life span to the generator. In addition, he said that, therefore on the transmission line system, utility company design reactor to supply reactive power into the transmission line to recap the usage of reactive power in the transmission and improve power quality in term of power correction.