20-Year Prospect
There's good news and bad news here, Shmoopers. The good news is that as the 21st century continues being an age of incredible technological advancement, alternative fuel technologies will be in high demand. That will only increase with time.
The bad news is that while the demand for the technology will increase, the amount of available jobs will only increase a teeny, tiny, itty bitty bit...around 5%. That figure is way below average (source). Hopefully, projections will get better as the country wakes up to advanced energy needs, but for now you'll have to keep the fire burning (so to speak) and hope for the best.