A mains electricity (AC-powered) device intended to generate microwave energy for localized non-vascular soft-tissue ablation, typically to treat tumours, hydatid cysts and/or menorrhagia. The generator connects via a delivery cable to a probe (not included) for delivery of microwaves to the target tissues. It is intended to be used in percutaneous, laparoscopic, natural orifice or open surgery procedures to ablate tissue typically in the liver, lung, pancreas, kidney, and uterus (e.g., endometrial ablation).