Definition
A prosument (a portmanteau of 'produsent' and 'konsument') is an end userHousehold or business connected to the electricity grid and consuming electrical power. who both consumes and produces electrical power - typically through solar panels on a roof. Surplus production is fed into the grid and compensated according to applicable rules. In Norway, prosumers are handled through the NEM scheme (net energy metering) and the plusskunde arrangement, whereby the grid companyCompany that owns and operates electricity grids and is responsible for power supply to end users. registers bidirectional energy flow at the metering pointThe fundamental unit in Elhub - the unique point in the electricity network where energy is measured and settled, identified by an 18-digit GSRN number.. The number of prosumers in Norway is growing rapidly as solar panel costs decline, creating new requirements for IT systems: KISCustomer Information System - the core system at power suppliers and grid companies for customer management and billing. systems must handle negative net load, MDMMeter Data Management - system for collection, storage, quality assurance and distribution of metering data from the electricity grid. systems need bidirectional time seriesMeasurements of the same quantity repeated over time. The order and the timestamp are part of the data, not decoration., and ElhubNational hub for metering data and market processes in the Norwegian electricity market. integrations must support prosument-specific message types. Aggregators can pool prosumers'' flexibilityAbility to change power consumption or production in response to price signals or system operator needs. and offer it to the market. Prosumenter are an example of how the role of 'end user' in the electricity market is being fundamentally transformed by the green transition.