I didn't say anything about green energy, and while the grandparent comment did, I don't think it was implied that it was the motivation of the experiment. Powe

I didn't say anything about green energy, and while the grandparent comment did, I don't think it was implied that it was the motivation of the experiment. Powering military drones for indefinite dwell time is a very plausible use case among many listed in the article.