Eco-innovation is increasingly acknowledged as a way for business to reduce negative environmental impact originating from or exacerbated by economic activity. Start-ups and young companies have been found to contribute especially towards environmental goals by developing radical eco-innovation. Young companies are also, however, observed to generally struggle with access to finance. This paper examines whether “green” start-ups and young “green” companies (0-8 years) might struggle to an even greater extent, as such companies are theorised to display a different mix of characteristics compared to other companies (e.g. linked to entrepreneurial motivation, strategy or product features).