
In the competitive landscape of mergers and acquisitions within the power sector, White & Case has emerged as the leading legal adviser by deal value during the first half (H1) of 2025 according to the latest legal advisers league table by leading data and analytics company GlobalData.
An analysis of GlobalData’s deals database indicates that White & Case secured top position in deal value, advising on transactions worth $36.8bn.
Kirkland & Ellis claimed the highest in terms of deal volume, alongside Latham & Watkins and CMS, each handling 14 deals.
GlobalData lead analyst Aurojyoti Bose comments: “Interestingly, White & Case and Kirkland & Ellis showcase a lot of similarities. Both held the fourth position by value and volume, respectively, in H1 2024 and their rankings jumped to the top spot by these metrics in H1 2025. Moreover, White & Case and Kirkland & Ellis showed improvement in the value and volume of deals advised by them in H1 2025 compared to H1 2024, respectively.
“Another similarity is that they both had double-digit deal volumes and some of which were big-ticket deals. During H1 2025, White & Case advised on four billion-dollar deals* that also included two mega deals valued more than $10 billion, while Kirkland & Ellis advised on the same number of billion-dollar deals and mega deals. Resultantly, Kirkland & Ellis, apart from leading by volume, also held the second position by value in H1 2025.”
Kirkland & Ellis also secured second place by value, advising on deals amounting to $32.6bn. Gibson Dunn & Crutcher followed closely with advisories on deals valued at $28.1bn.

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By GlobalDataLatham & Watkins took fourth place by value with their involvement in $22.3bn worth of deals.
Debevoise & Plimpton, together with Fried, Frank, Harris, Shriver & Jacobson, held joint fifth position by advising on deals totalling $16.4bn.
White & Case also featured among those leading by volume with their contribution to 13 deals within the period, while Cuatrecasas rounded out the list, advising on 12 deals.
GlobalData’s league tables are based on the real-time tracking of thousands of company websites, advisory firm websites and other reliable sources available on the secondary domain. A dedicated team of analysts monitors all these sources to gather in-depth details for each deal, including adviser names.
To ensure further robustness to the data, the company also seeks submissions of deals from leading advisers.