The current Alternate Current (AC) network is inefficient. Because of the use of rectifiers and inverters (converting DC/AC and AC/DC) energy is lost. Besides that a lot of material (copper) is needed for every conversion. The use of Direct Current (DC) in buildings creates the possibilty to increase the energy efficiency of distribution systems and applications while also reducing the amount of materials needed. By first combining AC and DC hybridly loss of energy will be reduced. The ultimate goal will be full direct current.
Rexel and Engie started the “DC Office” research at The Green Village to test the concept of the AC/DC mix and thus prevent energy loss. By including solar panels in this test, even greater savings could be realised. This could mean the creation of a brand new energy grid.