I could be wrong, but I don’t think you can grow all plants in hydroponics. For example, anything that grows on trees(large root systems) as well as grain crops (where you need a lot of plants together, rather in individual pods like in most hydroponics).

The only alternative I can think of is a greenhouse system. Like what indoor botanical gardens use for trees, but instead designed for farming. That would be expensive(more than farmers could afford), but it would also weather-protect crops.

But you are right about hydroponics or aquaponics for a lot of produce, though!

Not sure! It does not say on their website. Here’s the info they have:

Partners with Sun invented and patented the first Industrial Solar Oven. The Solar Oven has been successfully tested and launched in the year 2022. The Solar Oven cuts up to 80% of the bakery’s fuel bill and improves its production efficiency, increasing its profits and savings. The Solar Oven is embedded with IoT technology to optimize energy consumption and production processes

There is also a video here, if you just want to see more of it: https://www.youtube.com/watch?v=1MEw6TFSu-E