An older post, but still so uplifting and relevant, from Jeane Manning substack "Aether or...". I would like to quote from her article, Tom Bearden's statement about tapping the "actual vacuum energy" (of which the ZPE is just a small residual, observable portion of it):

[start quote]: ...Bearden emailed me "the precise difference between zero-point energy" and "energy from the vacuum."
"Zero-point energy is the energy of real particles that remains at the lowest quantum level i.e., absolute zero temperature," Bearden wrote. "It's observable energy, so we can measure it with instruments if we use sufficiently precise experiments. The important thing is that zero-point energy is detectable with sufficient instruments."