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NTRAF section 2 / Proof of concept

What TRL 2 means

Invention begins. Once basic principles are observed, practical applications can be invented. Applications are often speculative.

Criteria reviewers look for

  • Potential applications are named.
  • A theoretical or empirical solution is described.
  • Early cost, schedule, performance, and market risks are visible.

Evidence examples

  • Concept note
  • Feasibility paper study
  • Application map

Next action

Validate the concept experimentally or analytically in a controlled setting.

TRL 1Assess your TRLTRL 3

Map context

Where TRL 2 sits

TRL 1-3

Signal

Research, concept, and proof-of-concept evidence.

TRL 4-6

Forge

Lab validation, prototypes, test loops, and pilot evidence.

TRL 7-9

Flight

Operational validation, qualification, and deployment readiness.