The invention provides an electric energy substitution new technology evaluation method and system. The method comprises: the score of an evaluated technology is calculated based on the score of eachindex in the evaluated technology and the weight of the index in a pre-constructed electric energy substitution new technology evaluation index system; and performing evaluation based on the evaluatedtechnical score. According to the technical scheme provided by the invention, quantitative evaluation can be carried out for the new technology, and a decision basis is provided for ex-warehouse technology management and construction of an electric energy replacement related technology standard system.