Edit: theres an actually good demo video showing the real state of the tech rather than mockups: https://www.youtube.com/watch?v=NORPeCcIXRQ buried below in the comments so just surfacing higher. everything else is artists lying to you.

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> Glass surfaces can also generate energy. The microoptical layer in the window pane absorbs incident sunlight and transmits it in concentrated form to a solar cell. This combines the advantages of conventional windows – natural light and an unrestricted view – with the additional benefit of efficient energy production.

what? holy shit?