The Alderite Water Pump is used to power this.

The H2O Particle Amplifier is capable of producing 1 BU. It requires 1300 water to run a single one every second. It is good for mid-game energy when into late trillions/early quadrillions. It is the 3rd tier upgraded from the Advanced Steam Engine. Only 3 are able to be run at the same time with all Alderite pumps, but using 2 is more reliable for energy.