A dispute between Serbia and Kosovo regarding electricity usage of Kosovo has had a significant domino effect on the whole European grid (ENTSO-E). In 25 countries, the 50 Hz has been reduced in order to cater for the energy needed to keep Kosovo from suffering regular blackouts. This meant that all grid-operated clocks such as oven clocks, alarm clocks, boiler ignition clocks (for central heating for example) are late with respect to controlled time.
