Will Lightcell’s system demonstrate a higher power-to-weight ratio (kW/kg) than a PEM fuel cell system of equivalent output in any published benchmark by 2028?

https://www.lightcellenergy.com/

Lightcell Energy claims to convert hydrogen or hydrocarbon fuel into narrowband visible light (via sodium excitation), then convert that light into electricity using spectrally matched photovoltaic cells — a combustion-powered thermophotovoltaic (TPV) generator. They suggest this architecture can match or exceed the efficiency, cost, weight, and durability of conventional fuel cells (e.g. PEM) or generators.

Critics argue the system is thermodynamically inefficient, mechanically fragile, and inferior to fuel cells in nearly every metric — essentially a glorified gas lamp feeding solar panels.