Speak of the devil, GCL completed a production factory with a 1GW/annual capacity for perovskite modules just a few weeks ago:
GCL Optoelectronics has commissioned a 1 GW perovskite solar module facility in China, and says it may increase capacity to 2 GW per year depending on market demand.
www.pv-magazine.com
So yeah, we're not that far away, it'll be incremental improvements, just as we've seen in the solar and battery industry to date. Solar's gone from 14% polycrystalline silicon to monocrystalline silicon to poly p-type perc, mono p-type perc, mono n-type, n-type topcon, n-type hjt, n-type ibc exceeding 24% in the past 15 years, and witnessed a price drop from over $100/w in 1975 to $0.07/w in 2025.
A 1% improvement in efficiency in the solar industry is huge and tandem junction with perovskite can definitely open the pathway to +30% efficiency and get us past the Shockley Queisser limit for a single junction silicon cell.