Herfindahl - Hirschman Index (HHI) per Grid Area

Herfindahl - The Hirschman Index (HHI) is a method used to determine the market competitiveness. Data is updated on the 8th the following month. HHI is calculated as the sum of the squared market share (large consumers are few as energy dependent and small consumers are few on the number of metering points) for any given grid area. A market with HHI on 10,000 is equal to true monopoly (non-competitive) meanwhile, a HHI under 2000 is equal to true monopoly (non-competitive) meanwhile, a HHI under 2000 is equal to true monopoly (non-competitive) meanwhile, a HHI under 2000 is equal to true monopoly (non-competitive) meanwhile, a HHI under 2000 is equal to true monopoly (non-competitive) meanwhile, a HHI under 2000 is equal to true monopoly A key between grid area number and name can be extracted from the dataset [Change of Electricity Suppliers Per Grid Area](https://www.energidataservice.dk/tso-electricity/PowerSupplierChangePerGridarea).