We added a new source of data for installed capacity and electricity generation of power plants – it comes from a monthly bulletin “Informacja Statystyczna o Energii Elektrycznej” by Agencja Rynku Energii (ARE, Energy Market Agency), which is ordered by the Ministry of State Assets (formerly Ministry of Energy). Though data on generation coming from the transmission system operator Polskie Sieci Elektroenergetyczne S.A. (PSE) or entsoe is accessible live, it is less accurate than ARE. In particular this problem concerns (smaller) PV installations. Soon, we will publish more on ARE and its really valuable resources, not accessible to the public…