Quote Originally Posted by icks View Post
Since the thread has mostly lost it's seriousness, can I enquire about what was said about tidal energy in the original thread? That comes from our moon and gravity obviously and not-so-obviously where ever gravitational PE comes from but I am pretty sure that's entirely renewable, granted, until the suns blows up.
Well, it does sound promising - however, tidal power generation also has a rather large ecological impact on the area around it. For starters, the fish who get sucked into those definitely won't like it.

On the other hand, it's a highly dependable technology - the frequency of the tides is near-constant.