White & Case and Kirkland & Ellis were the top mergers and acquisitions (M&A) legal advisers in the power sector during the first half (H1) of 2025 by value and volume, respectively according to the latest legal advisers league table by GlobalData, a leading data and analytics company.

An analysis of GlobalData’s Deals Database revealed that White & Case achieved the leading position in terms of value by advising on $36.8 billion worth of deals. Meanwhile, Kirkland & Ellis led in terms of volume by advising on a total of 14 deals.

Aurojyoti Bose, Lead Analyst at GlobalData, 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 occupied the second position in terms of value, by advising on $32.6 billion worth of deals, followed by Gibson, Dunn & Crutcher with $28.1 billion, Latham & Watkins with $22.3 billion and Debevoise & Plimpton and Fried, Frank, Harris, Shriver & Jacobson jointly holding the fifth position with $16.4 billion.

Meanwhile, Latham & Watkins occupied the second position in terms of volume with 14 deals, followed by CMS with 14 deals, White & Case with 13 deals and Cuatrecasas with 12 deals.

*≥ $1 billion