Amprion GmbH

Based in Germany, Amprion GmbH, formerly known as RWE Transportnetz GmbH, is a leading transmission system operator specializing in the development and maintenance of a high-voltage electricity network that promotes renewable energy integration and supports energy transition goals. Amprion GmbH, founded in 2003, operates as a transmission system operator in Dortmund, Germany. The company has secured significant funding, with the latest in September 2025, RWE Alkaios Holding GmbH agreed to acquire a minority stake of 25. 1% stake in Amprion GmbH from RWE Aktiengesellschaft.

Amprion GmbH operates as one of the four major transmission system operators in Germany, focusing on the development and maintenance of a high-voltage electricity transmission network that spans over 11,000 kilometers. The company's primary products and services include the construction and operation of interconnection systems such as BalWin1, BalWin2, DolWin4, and BorWin4, which facilitate the efficient and secure transport of offshore wind energy to the mainland. These systems are designed to minimize environmental impacts while enhancing the stability and reliability of the national electricity grid. Amprion’s client base includes energy producers, industrial consumers, and regulatory bodies across various regions in Germany, as well as partners in broader European energy networks.

The company's initiatives, such as the A-Nord DC connection and the Rhein-Main-Link, are crucial components in achieving Germany's energy transition goals. Amprion’s revenue generation is primarily tied to its role as a transmission system operator, where its services are essential for facilitating electricity flow from generation sites to consumption areas. The company engages in business transactions that often involve infrastructure development and service agreements with energy producers, utility companies, and government entities. These transactions typically follow a B2B model, with structured partnerships that may include cost-recovery tariffs for network usage, enabling energy suppliers to deliver power through Amprion’s grid.

Additionally, the company is involved in collaborative projects that support the integration of renewable energy sources, which further solidifies its revenue stream. While specific pricing structures for services are not disclosed, the transactions relate directly to the operational needs of customers who rely on a stable and efficient transmission network. The company plans to leverage its recent funding to enhance its infrastructure and expand its service offerings. By September 2025, Amprion aims to launch new interconnection projects that will improve cross-regional energy transport capabilities.

Additionally, the focus will be on expanding into other European markets to facilitate greater renewable energy integration, supported by the recently secured EUR 3. 2 billion from Apollo Global Management, which will bolster these expansion efforts.