Augstsprieguma tīkls AS

Oil and GasRīga, Latvia51-200 Employees

Augstsprieguma tīkls AS (AST) operates as an independent electricity Transmission System Operator in Latvia, overseeing the national transmission network to ensure a secure and reliable power supply. It maintains operational control of power flows and the generation assets connected to the grid and coordinates interconnections with neighboring systems to support cross-border exchanges. Based in Riga, Latvia, the company is a mid-sized energy operator focused on stable system operation and nondiscriminatory access to transmission capacity.

AST's customers include transmission system users and power market participants who rely on the published transmission service tariffs and free third-party access to the network. Its mandate covers supplying energy to the distribution network in required amounts while meeting power quality requirements, and maintaining the security and stability of the transmission system. In 2025, AST announced a partnership with Heimdall Power for its first project in Latvia.

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