A method for coalescing a disperse phase component in a primarily gas process fluid includes passing the process fluid through a structure. The structure includes an outer wall with an electrically insulating material formed on an entire inner surface of the outer wall to define an entirely insulated flow path for receiving the process fluid and the flow path is free of any portion of the structure. A plurality of planar, spaced-apart electrode plates is positioned within the entirely insulated flow path and positioned substantially parallel to one another and substantially the entirety of each of the plurality of electrode plates is coated with an insulative material. At least one insulating member disposed in a space between and spaced apart from two adjacent electrode plates. A power source is applied to the electrode plates to generate an electrical field to coalesce droplets of the disperse phase component.