The Institute for Energy Economics and Financial Analysis (IEEFA) has published a briefing note assessing Japan’s plan to integrate perovskite solar into its energy mix. National policy targets have included 1 GW domestic production by 2030 and 20 GW installations by 2040, supported by LCOE goals of JPY 10 to 14 (~$0.064 to $0.090) per kWh. Manufacturers have predicted higher projected costs and short lifespans of 5 to 12 years. The briefing has suggested giving priority to silicon-based systems while positioning perovskites as secondary additions.