The power cord that comes in the box with Hydrow is 12 feet long. A replacement can be ordered through Hydrow customer care, but we do not carry a longer version.
While we always recommend using the original hardware when possible, the power cord for Hydrow uses a generic connector and can be replaced by any other cord of the same type. These cables are very common across PC & A/V products and may often be found in either an electronics or hardware store.
The official specification for Hydrow's power cord cord is IEC 320 C13/C14 - Hydrow's Power cord is a C13 style.