I'm the leader of a small guild with a mixed population; we have a core of old 5* officers and a membership of mostly 2* to early 4* players. Part of our mission is to help out the new folk with moneymaking and skill training, and to that end we bought ourselves a mist well. I love the idea of the well as a guild energy source, and so does the rest of the guild; the newbies get to run more and play on days they craft, and the officers don't have to wait for them to recharge to help them with their next run.
The management of the well, however, is a bit trickier. Our current system is a withdrawal fee: if you use the well, you pay a fine to the treasury. This helps pay the modest upkeep and makes the recruits feel like they're contributing. The problem is that donating to the treasury puts the money where it can't be used to buy more energy to refill the well. Sure, it will eventually be used to pay our upkeep, but frontloading those long-term costs isn't terribly helpful when the short-terms costs of well maintenance are still there. In theory, giving the fee to a designated energy-buyer would be possible, but it would require that person to be online all the time and would make theft very simple. The 500 CE donation minimum for the well, while understandable to prevent abuse by dungeon grinders, also makes it difficult for new folk to add CE directly to it.
I'm curious how other guild leaders are using and managing their wells. Hopefully I can learn from you to figure out how best to do it for my own guild. It would be helpful to include the way your wells are used (dungeon grinding, ragecrafting, etc) so we can compare the demands on our respective systems, as well.
We'd love to keep ours open, but we just can't restrict it. We have about 3k in there, but a recruit can just waltz in and use up all of it and we can't trust the honor system to stop them. It sucks because we have to block it off for everyone until OOO implements a way to limit it.