Power Generation

Copper Solutions That Make Power Plants More Powerful

Modern power plants require highly efficient generator solutions that ensure maximum power density, precise energy conversion, and long-term operational reliability.

ASTA delivers the technological core components that are essential for achieving the highest efficiency and maximum performance in modern generators.

Roebelbars – Precision for High-Performance Generators

Roebelbars are key components of modern high-performance generators. They enable highly efficient energy conversion by minimizing eddy current losses, optimizing heat dissipation, and delivering maximum reliability over long operating lifetimes. ASTA is among the world’s leading manufacturers of these specialized conductors – offering unique vertical integration, state-of-the-art technologies, and highly precise production tailored to customer-specific requirements.

ASTA Roebel Bars – Our Strengths

As a One-Stop-Shop, ASTA offers a fully integrated Roebelbar value chain—from metal forming and profiling to enameling, insulation, and precise transposition. This results in Roebelbars with exceptional technological depth: custom-designed geometries for maximum power density, extremely tight tolerances for minimal losses, outstanding thermal and mechanical stability for the most demanding generator applications, and specialized solutions such as water-cooled, air-cooled, and hydrogen-cooled Roebelbars for superior cooling performance and continuous high-load operation.

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Pumped Storage Power Plant Ebensee

The Green Battery

The Ebensee pumped storage power plant is a future-oriented energy storage project in Upper Austria that stores surplus renewable energy, ensures grid stability, and from 2028 will supply around 280,000 households with green electricity.

Asta supplies the Roebel bars for the generator manufactured by Andritz AG.

Customer: Andritz AG
Implementation period: 2026
Austria

Glen Canyon Dam

The Glen Canyon Dam is one of America’s largest hydroelectric power plants and was constructed in the mid-20th century to supply renewable energy to the western United States.

ASTA supplies components for the generator set-up, enabling the eight power generators to deliver a total output of 1,320 megawatts and provide green electricity to Wyoming, Colorado, Utah, New Mexico, and Arizona.

Customer: SIEMENS Energy
Implementation period: 2017
United States

Three Gorges Dam

The Three Gorges Dam is the world’s most powerful hydropower plant and a cornerstone of China’s national energy supply.

Asta supplies water-cooled Roebel bars with integrated hollow steel conductors for the generators, enabling high efficiency and long-term reliability.

Customer: Alstom
Implementation period: 2012
China