Hydrogen burns clean — water vapor exhaust — darling of fossil lobby transition fuel and green energy purists simultaneously. Catch: hydrogen not found free; must manufacture — electrolysis water (green if renewable power) or strip natural gas (blue/grey with CO₂). Storage transport nightmare small molecule leaks embrittles steel; liquefy near absolute zero energy absurd. Where hydrogen fits niche; where electrification EV heat pumps already won.

Colors of hydrogen marketing

Green — electrolysis + renewable electricity; truly low carbon if verified.

Blue — steam reform methane + carbon capture; carbon capture debates; methane leakage undermines.

Grey — methane reform no capture; emissions worse than useful.

Pink — nuclear powered electrolysis niche.

Most hydrogen today grey industrial ammonia fertilizer.

Use cases promising

Steel cement — hard-to-electrify industrial heat hydrogen replace coal pilot projects.

Heavy trucking long haul — maybe fuel cells vs battery weight debate ongoing;

Shipping aviation — synthetic fuels hydrogen derived e-fuel longer horizon;

Grid storage — convert renewable surplus hydrogen store salt cavern seasonal — efficiency low but possible.

Use cases weak

Passenger cars — Toyota Mirai niche; EV dominated; charging infra hydrogen station dozen vs thousands;

Home heating — pipes retrofit explosion risk; heat pumps simpler.

Export energy — ship hydrogen inefficient; ammonia carrier intermediate toxic;

Infrastructure gap

Pipelines rare; compression expensive; safety standards evolving;

Government subsidies US IRA hydrogen hubs billions; EU similar;

Projects announced > operating at scale always.

vs battery and grid

Round trip efficiency electrolysis fuel cell ~30–40%; battery ~90%; electricity precious waste hydrogen passenger car — physics economics align.

Connection nuclear fusion hydrogen dreams

Both “future energy” headlines; fusion timeline separate; hydrogen usable now industrial grey mostly.

Conclusion

Hydrogen energy piece of decarbonization puzzle — industrial heat heavy transport maybe — not universal silver bullet despite color-coded PR campaigns.

Follow steel plant pilots not pump station count near suburb.

Green molecule real; greenwashing equally real.

Lumen is edited by Leo Hartmann. Related: Carbon Capture Climate Tech · EV Charging Infrastructure