Proterra

Proterra secured over $1 billion in funding and landed purchase orders from major transit agencies including New York City and Los Angeles, which appeared to validate genuine demand. ​​‌‌‌‌‌‌‌​‌‌​​‌​​​​​​‌‌​‌‌‌​​​‌‌Cities signed letters of intent and committed budget allocations, suggesting real institutional interest beyond casual inquiries. Early production sold out, with waiting lists stretching years into the future. However, these signals masked critical weaknesses. Purchase orders came with contingencies—cities needed federal subsidies to proceed, meaning demand existed only at subsidized price points. When Proterra examined actual unit economics, the company discovered it couldn't profitably manufacture buses at volumes customers would accept. Production costs consistently exceeded revenue per unit, and scaling only worsened the problem. The warning sign was overlooked: customers never paid full price. Real demand validation requires customers willing to pay unsubsidized rates. Proterra confused policy-driven procurement with genuine market demand, conflating government mandates and grant availability with sustainable business fundamentals. The company filed for bankruptcy in 2023, revealing that impressive order books meant nothing without viable unit economics.