[pbmonster]

> It is great that it keeps getting cheaper but at this point the returns are diminishing. If you're thinking of buying something there is no new tech or anything on the horizon worth waiting for just go ahead.

I think if they get perovskite degradation under control, tandem cells with 30%+ efficiency are on the horizon.

Also, future cells still can get a whole lot thinner and lighter, which decreases material costs and overall requirements on mounting hardware (only a little, you still need to deal with wind loads).

But I agree, especially for home owners there's no reason to wait. Still, if you're in the business of building a gigawatt scale powerplants, there's still a lot of things to look forward to. Also, ground installation of panels still has a lot of untapped automation potential.