OldSkoolMatt's Offshore P.U.M.P.S. and Ground Water mod is a brilliant idea that I just had to snap up and start playing with, but I found the power scaling of the offshore pumps to be far too steep for my preferences.
So I wrote this little mod-mod that adds options to rescale the Offshore P.U.M.P.S. to be more energy efficient, while still costing energy to operate! Includes rescaling factors of divide-by-1 (no rescaling), divide-by-10, and divide-by-100 (pumpjacks max out at /10 because otherwise they would be too efficient!).
Also includes options to rescale the fluid pump's energy requirements to match the geometric progression of the extra offshore pump tiers, as well as to make the burner pump even more inefficient because by the laws of thermodynamics combustion engines can only ever be at most 50% efficient!
I cannot guarantee this mod-mod will play nicely if any other mods compatible with OSM's Offshore P.U.M.P.S. are also installed and active, since I don't play with any of those other mods, but I am receptive to detailed bug reports and pull requests on the git repo. :)
NOTE: This is NOT a reupload of OSM's Offshore P.U.M.P.S. This mod REQUIRES OSM's Offshore P.U.M.P.S.