Student or Learner
I'm not sure of what "scale" means in the context.
Clearly, interest in carbon-neutral, low-cost fuels is at an all-time high, but problems remain. None of the afirementioned companies... have figured out how to bring this tecnology to scale. To really meet our needs... production has to be increased a millionfold, maybe even ten millionfold...
It it saying "make the technology widely available (or widely applicable)"?
Yes. To scale up production.