This paper proposes a review of the scientific literature on electric load management (ELM). Relevant topics include the smart grid, demand-side management, demand-response methods, and peak load reduction. The evaluation is performed by a systematic literature review (SLR) and an evaluation of the recent advances in the state of the art. The analysis is based on the classification of 200+ papers, considering the covered topics/problems, assumptions, constraints, and the proposed methods. Statistical results show a growing interest in ELM in the last few years, and a fast obsolescence of older results. A lack of common benchmarking frameworks has been detected.