Having gone down the indoor hydroponics/aeroponics rabbit hole, I find it likely that you could buy leds with the exact frequency or spread of light needed to counter the light perception issue - seasonal depression is probably a complex of deficiencies, though, so light alone probably wouldn't be sufficient. Some combination of atmosphere, temperature differential and duration, physical activity, and recurrence could all come into play. And vitamin d and possibly other nutrient deficits depending on seasonal food in your market.

If it was as simple as light exposure, leds on glasses would be an easy cheap fix - wear light therapy glasses x minutes a day while you work or listen to podcasts, etc.

It is sometimes as simple as not having tinted windows :)

But then you can't read computer screens and annoy people with the sun blinding them.

It's possible that in few years we'll switch to e-ink anyway. But we'll stuck with architecture based on minimising natural light "annoyance" for a very long time.

Interestingly, solar panels and LEDs are more efficient than plants directly in the sun, due to the spectrum inefficiency of the green light absorbing dye.

Photosynthesis uses energy in the red part of the visible spectrum. That's why they look green. They do not absorb the green light, they reflect it.

Plants store their solar energy in a hydrogen-carbon bond for storage. To compare a plant with a solar panel and LED you need to also include the storage technology, which is usually batteries. Because plants do not as a rule glow brightly, a more apt comparison would involve, say, a locomotion system. Comparing the efficiency of, perhaps, a car that drives at night powered by a solar/battery system vs. a plant/combustion system. It would be an interesting experiement.

No, the comparison is between a glass roof and a solar roof with LEDs underneath.

And yes, I know the dye doesn't absorb green. It's still a green dye; last I checked we name dyes by their reflected color.

I think your post and the reply of the previous poster is a perfect example of why comma's are important.

You meant a "green, light-absorbing dye" (using hyphens to make the distinction clearer), the previous poster understood "a green-light absorbing dye".

Let's eat grandma!