Current and Voltage opposite polarity power supply
Yes of course, rotating machinery generators can do this. Normally the current and voltage are in phase, but they can also be in opposite phase.

When current and voltage are in opposite phase, it is called a motor.

Of course that means it consumes power from its electrical supply, so the only way it can drive an electronic load is by turning the shaft of another generator.

That is then called a motor-generator.