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Atel Holding

Atel Holding was a Swiss energy company that merged with EOS in 2008 to form Alpiq, a leading Swiss electricity producer and energy service provider.

Last updated September 26, 2026

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Overview

Atel Holding, historically known as Atel (Aar et Tessin d'Électricité), was a Swiss energy company focused on electricity distribution and generation. It operated primarily in Switzerland and was involved in the European energy market. The company's origins trace back to the early 20th century, and it grew to become a significant player in the Swiss energy sector, with a portfolio that included hydroelectric, thermal, and nuclear power generation. Atel was a publicly traded company, reflecting its substantial scale and investor base. In a landmark move, Atel merged with EOS on 19 December 2008 to form Alpiq Holding, which began operational activities on 1 February 2009. This merger created one of Switzerland's largest electricity producers and energy service providers, with a strong asset base and a focus on sustainable energy solutions. Following the merger, the Atel brand was retired, and its operations were integrated into Alpiq. Today, Alpiq continues to operate under the legacy of Atel, with a purpose to contribute to a better climate and improved security of supply. The company is headquartered in Lausanne and employs about 1,400 people, active throughout Europe in energy generation, marketing, and optimisation.

History

Atel Holding, originally known as Atel (Aar et Tessin d'Électricité), was a Swiss energy company with a history spanning over a century. It was formed to generate and distribute electricity, leveraging Switzerland's abundant hydropower resources. Over the decades, Atel expanded its operations to include thermal and nuclear power, becoming a key player in the Swiss energy market. The company was publicly traded, indicating its significant size and importance. In the early 2000s, the European energy sector saw consolidation, and Atel sought strategic partnerships. On 19 December 2008, Atel merged with EOS to create Alpiq Holding. This merger was a strategic move to combine resources and expertise, creating a stronger entity capable of competing in the liberalised European energy market. Alpiq commenced operations on 1 February 2009. The merger integrated Atel's assets, including its hydropower plants and nuclear shares, into Alpiq's portfolio. Following the merger, the Atel brand was phased out, and Alpiq continued to build on the combined legacy. Today, Alpiq is a leading Swiss electricity producer and energy service provider, with a strong focus on sustainability and security of supply, operating throughout Europe with about 1,400 employees and headquarters in Lausanne.

  • Atel merged with EOS to form Alpiq Holding.

  • Alpiq commenced operational activities.

Products and positioning

Leading Swiss electricity producer and energy service provider, active throughout Europe.

Product categories. Electricity · Energy trading · Energy services

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