It is estimated that a currently a cummulated capacity of 18 to 26 GW thin-film pv is installed. That is about 4-5% of ca. 500 GW total PV installations installed worldwide as of 2018.
Many different technology approaches and players are already for a very long time on the market improving their technologies steadily. Those companies have successfully increased their products in efficiencies and module reliability. Nowadays, production capacities are growing and they are offering a wide spectrum of applications like for automotive, building-integrated (BIPV) roof tiles or façade elements or standard modules for utility scale PV plants.