The DEFR Follies -- Cost Of Hydrogen Storage
/Here in New York we have our own unique and special acronym for how we think we are going to make our future emissions-free electrical grid work with predominantly wind and solar generation. The acronym is DEFR — the “Dispatchable Emissions-Free Resource.”
When the sun goes down and the wind stops blowing in the dead of winter, we will crank up the DEFR to keep us all warm and cozy. There will of course be zero carbon emissions, because by definition the DEFR is “emissions-free.”
Unfortunately nobody is quite sure what this DEFR might be.
There are only a few options. Nuclear could work, but in New York it is completely blocked by regulatory obstruction and the certainty of decades of litigation. Batteries are wildly too expensive and physically not up to the job.
That leaves many green energy advocates grasping at hydrogen as the last remaining option. Granted, we don’t yet have any meaningful production of hydrogen from carbon-free sources. But it seems so simple: just use wind and solar generators to run electrolyzers to make hydrogen from water; then store the hydrogen in some big caverns, and burn it when you need it. No carbon is involved. Problem solved!