“A balance-responsible party, or BRP for short, is a company that can and may handle the balance responsibility for production and consumption units and/or trades actual electricity. Because this role gives access to the day-ahead market, the intraday market, and the balancing market, a BRP can be active in both the electricity market and the balancing market.
Last, but not least, the balance-responsible party is financially responsible for imbalances and deviations between planned and actual production, consumption, and trade of power.
A balance-responsible party can also, by agreement with [the Transmission System Operator], deliver ancillary services, if technical and legal requirements are met.”
[Source: https://en.energinet.dk/electricity/new-player/become-a-balance-responsible-party/#:~:text=A%20balance%2Dresponsible%20party%2C%20or,and%2For%20trades%20actual%20electricity. Accessed 08.09.2023]