Photonic Computing and Data Centers: Why Energy Could Finally Become the Constraint

Rene Grywnow’s 5-Minute Business Punch · Jun 9, 2026 · 8m

For three years we’ve been winning the wrong battle. Liquid cooling, variable-frequency drives and system optimisation deliver real 15–50% savings, but only within the limits of electronic, silicon-based computing. And demand keeps doubling toward 945–1,200 TWh globally by 2030.

In Part One of Week 24, I make the case that incremental efficiency has hit a hard physical ceiling, and that the next leap requires changing the physics of computation itself. Photonic computing uses light instead of electrons: almost no on-chip heat, massive parallelism, and, for suitable workloads, demonstrated…