Watson Farley & Williams (“WFW”) advised Alpiq AG (“Alpiq”) on its acquisition of a 90% stake in BESS developer and operator Harmony Energy Limited (“Harmony Energy”).
The acquisition aligns with Alpiq’s flexibility strategy and strengthens both its asset base and commercial capabilities by expanding its presence across the BESS value chain. The acquisition adds approximately 400 MW of assets under construction to Alpiq’s existing BESS footprint in Europe, including a UK project expected to be connected to the grid as early as Q3 2026, as well as an important project pipeline. Together, these assets and the pipeline put Alpiq on track to build and operate a multi-gigawatt BESS portfolio across Europe over the coming years.
Following completion of the transaction, Harmony Energy will continue to operate as an independent company under its own brand, retaining its team, entrepreneurial culture and operating model.
Alpiq is a leading Swiss energy services provider and electricity producer that operates throughout Europe. It offers its customers comprehensive and efficient services in the fields of energy generation and marketing as well as energy optimisation.
Founded in the UK in 2010, Harmony Energy is one of Europe’s leading developers, owners and operators of utility-scale BESS projects, strengthening grid flexibility and resilience, enhancing energy security and supporting homegrown energy systems across the continent.
The cross-border team WFW Energy team advising Alpiq was led by Partner Emmanuel Ninos. In London, Emmanuel was supported by Partner Sarah Williamson, Senior Associates Florence Childs and Sebastian Lello and Associate Dominic Mbanu. Tax advice was provided by Partner Claire Miles and Associate Pip Moss. Partner Solange Leandro and Associate Hamish Ungless advised on competition matters. Real estate advice was provided by Partner John Rosmini, Senior Associates Cole Tennant-Fry and Jo Hall and Associates Mia Langston and Emily Harper. Partner Devan Khagram provided employment expertise. Senior Associate James Fryer and Associates Elizabeth Gillespie, Jonathan Ford, Laura Izquierdo and Rachel Lee advised on UK due diligence.
A WFW Paris team including Senior Associate Mohamed Douib and Associate Amandine Collard advised on French due diligence, with Partners Dirk Janssen, Christine Bader, Senior Associates Wiebke Westermann and Christian Schulten-Baumer and Associate Ruwen Fritsche advising on German due diligence.
Emmanuel commented: “Acquiring a majority stake in Harmony Energy reinforces Alpiq’s commitment to flexible energy solutions and positions it strongly within the rapidly growing battery energy storage sector. WFW has been at the forefront of advising on energy storage projects and transactions across Europe, and we were delighted to support Alpiq on a deal that reflects the continued evolution of the market”.
DZP, led by Partners Marcin Krakowiak and Daria Goliszewska, acted as Alpiq’s Polish law counsel.
