To Vgray: Certainly. I'll probably set up some factories (or the closest thing possible in this game) that run off of my mana generators. I could set these up to produce whatever tools are needed although they may need to be initially staffed by your goblins (depending on what the GM says). I'm hoping they'll be automated though, if not initially then later on. If not I'll just have my golems run them after I build some more.
To GWG: Depending on the output of said generators, I could see about sending you some of the mana, considering the possible circumstances with you paying upkeep on the sun and all that. Of course if I gave this to you for free, I think everyone else would start asking for it as well which would of course drastically cut into my profits. Don't worry though I'm sure an arrangement can be worked out though... Kind of too tired to think of something now but...
Maybe it'll involve you paying me a certain amount of the energy it costs to set up some generators and in return you'll get a continuous percentage of the energy produced back. Sort of like investing in stock I guess. Everyone would have the option of investing but you would probably get a discount based on controlling the sun (or one of the suns as it may occur).
Edit: Ninja'd sort of by the GM. Not sure if the sun staying up will change anything I just posted. I'll think about it later... Too tired right now.