You won't find any boutique firms in the upper echelon of the Energy space. McKinsey and BCG again ranked 1-2, (though BCG lost a noticeable 4 points over the previous year. Deloitte replaced Bain at #3, courtesy of a 3-point drop or the latter. Accenture climbed two spots to #5, with EY gaining nearly 4 points in the eyes of competitors.