Available wind turbine transformer oil treatment solutions include multi-stage filtration systems, vacuum degassing units, oil dehydration systems, and chemical regeneration processes. Filtration systems remove particulates, while degassing systems eliminate moisture and dissolved gases. Dehydration systems dry the oil, preventing oxidation, and chemical treatments can neutralize acids and restore oil quality. These solutions can be applied separately or in combination depending on the oil’s condition and the specific requirements of the wind turbine transformer.