At the beginning of the 20th century, Voltage and frequency have been a controversial issue on which experts such as Thomas Edison and Nikola Tesla were unable to reach an agreement. Edison was a strong supporter of DC distribution. AC was finally chosen, which was then the right choice. However, with the current rise of electronics this choice becomes outdated. Currently we have to move to Edison and Tesla's physics laws are needed in the DC/DC converters.
DC saves energy
Offices with a DC grid instead of the usual 230V AC voltage. This provides a consistent energy savings, because revenue losses of converters thus disappear. Before the AC power is transferred from the public grid to the computer or fluorescent light, there are already a number of conversions from AC to DC in the office building. This leads to unnecessary losses.