Each organization should make progress to remain competent in its business. Enterprise Modeling (EM) helps in understanding the current and planning the future states, followed by proposing improvement actions in an enterprise. To receive support from EM, we should start a process of using an Enterprise Modeling Method (EMM), that likewise any other process needs using resources. As resources are expensive, we prefer not only gaining results, rather using resources reasonably, i.e. performing an efficient process that supports the process quality. To realize if we have an efficient EMM, we should evaluate its efficiency. In this paper we present a method for efficiency evaluation of EMMs for general case of application. This method contains efficiency criteria and questions for evaluating their fulfillment. Then it is applied to the Enterprise Knowledge Development for appraising the evaluation method. The paper ends with a number of conclusions about the evaluation method.