Business models have routed its way through smart cities. This, being an important phenomenon for an organisations success the concept has not been defined accurately. Literature review defines this as fuzzy and vague concept despite its importance to organisations is tremendous. This paper advances our understanding of the business model concept by reviewing the different types of business models and business model definitions following a systematic literature review approach. The paper progresses with a comparison between the businesses models developed for the smart cities domain. The paper seeks to address the question -How are smart cities going to generate economic value?