A shipping container is actually an ideal podcast studio. The steel walls block external noise naturally. Add acoustic treatment (foam, bass traps, diffusers) to the interior and you have a sound-isolated recording space that rivals professional studios.
Build out: Frame interior walls with 2x4 studs, fill with Rockwool insulation (thermal + acoustic), finish with drywall or acoustic panels. Install a split-system mini-split for silent climate control. Wire for XLR, USB, ethernet, and power. Add LED lighting on dimmers.
Solar setup: A podcast studio uses relatively little power — just mics, mixer, computer, monitors, lights, and AC. A 2 kW solar system with 5 kWh battery is more than enough for daily recording sessions.
Pro tip: Mount the mini-split compressor outside and use vibration-isolated mounts. Run a dedicated audio circuit separate from the AC circuit to eliminate electrical noise in recordings.