Yes, actually, although it's much less power-positive than I think you'd like. The only way anyone can get mad at you about this is if they have also banned quarries.
Here's what you can do:
- Find a big, flat, solid plane of nettherack in the nether. Position a max-size quarry here slightly mis-aligned from chunk boundaries so that the quarry will keep itself loaded, with a bit of space for machines.
- Build some magmatic engines and magma crucibles.
- Rig just two or three magmatic engines to power your quarry and let them get started by hand-feeding them lava. You want a nice big supply of netherrack before you start. But you want the quarry to run as slowly as possible so you don't have to reset this rig often.
- On site in your "accidentally" chunk loaded region, set up several magma crucibles and several magmatic engines to power them. Set it up so that they are constantly fed with netherrack.
- Melting netherrack is slightly energy and lava positive, so replicating it 4-5 times and then piping the magma to a tesseract/ender tank will give you the same results as pumping lava.
- Make sure to buffer your netherrack such that if you stop consuming lava, you will not be spilling material everywhere! Void the excess from a buffer chest, using a gate to detect if it's full.
This method is much more costly than pumping lava, and is much more complex. It is, however,
much less stressful on the server and your client because there are no fluid calculations and slow-running quarries are generally not considered CPU hogs. You might also sneak a normal pump rig nearby if everyone is cool with this, on the grounds that "it powers my crucibles."
