That video makes my point nicely in two ways. Firstly, the link under it to the commercial supplier is dead. It's not a product you can just buy.
Secondly, it's a concentrator system with a two-axis tracker. That's going to require maintenance, however trivial. You can clearly see a chain-and-sprocket arrangement at about 1:20 in the video. If you have a chain technology which is maintenance-free for 25 years, I know a lot of cyclists who'd be interested.
I never oiled the chain on any of my bicycles, and it's been more than 25 years. They still run. Even so, I prefer putting on a little grease on such a sprocket compared to hoping that my solar panels will generate enough power after 13 years.
And in my initial post, I unequivocally stated that one of the biggest problems with the integrated Stirling engine is that no residential kits are available at the local hardware store.
Secondly, it's a concentrator system with a two-axis tracker. That's going to require maintenance, however trivial. You can clearly see a chain-and-sprocket arrangement at about 1:20 in the video. If you have a chain technology which is maintenance-free for 25 years, I know a lot of cyclists who'd be interested.