Entrepreneurs can make an impact on reducing environmental and societal problems. Recent studies have proposed theoretical explanations for the fact that some entrepreneurs do identify and pursue such opportunities to prevent environmental and community degradation. The explanations for the identification of sustainable opportunities are still largely conceptual. Our study empirically explores when entrepreneurs become more likely to identify sustainable opportunities. In particular, we explore when entrepreneurs, running an existing business, identify sustainable opportunities. How do their existing business arrangements enable or constrain the identification of sustainable opportunities?