You’re right, the idea has a certain grim‑beautiful charm. In practice you’re looking at three hard realities. First, the power source – solar panels on a derelict roof won’t cut it by themselves, so you’ll need a hybrid of PV and small‑scale wind or a micro‑turbine. Second, storage – batteries are expensive and degrade quickly if you’re cycling them for filming schedules, so a battery bank that can handle a full day of backup is a must. Third, the legal side – zoning and permits can bite hard; abandoned lots are often in hazard zones, so you’ll need to get a land‑use variance or a temporary use permit before you can wire anything. If you can line up the funding for equipment, secure a short‑term lease, and get a local contractor that knows both the grid code and the rough‑housing of an old warehouse, you’ll have a working microgrid that can power lights, rigs, and maybe even a small sound booth. It’s doable, but the paperwork and the “what if it fails” anxiety are the real obstacles.