How Energy Founders Systematically Underestimate Reality by 10x

21 October 2025

Iliana Portugues

A founder’s Series A deck showed promise but badly underestimated costs: €10K for grid links and €25K for compliance vs real costs of €50K–€500K and €200K–€2M. Such 3–10× underestimation is common in energy tech. I’ll unpack this via Octopus Energy here.

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