There is a 50% energy loss from converting UU-matter to oil, not counting any scrap used to make the UU-matter. So 20 buckets of oil = 500k EU.
Oh damn haha. Then it's nerfed haha. We don't use scraps on our server so thanks for the info but damn. SO if you did that be like 3mil EU I think per 1mil if you used scraps.