Challengers against incumbents

Disruption scorecard

Which challenger technologies are displacing incumbents in India and the world, and how far each has got.

Stages run from lab or pilot, through early market and cost parity, to mass market and incumbent displaced. A challenger moves up only on evidence: cost parity reached, capacity installed, a rule enforced or capital spent. Rows marked draft are editorial judgements awaiting review against data. Announcements and consultations are logged as weak signals, not counted here.