Free FM, an independent radio station in New Zealand, interviewed Castaldi for a radio program that first aired on the station on May 9, 2024. Hosted by Andrew Johnstone, the segment explored a proposed $200 million Waste to Energy facility to be opened in Te Awamutu, a town in the Waikato region of New Zealand. The show contrasts the claims and concerns of local opposition, a self-named activist group called Don’t Burn Waipa, with the voice of an expert in the technology: Castaldi.
Those interested can listen to the podcast here.