In this database you could find raw materials obtained from georeferenced Keyhole imagery. There are pylons and some power line segments, which were processed to obtain historical network data. Please note, that there not only backbone power lines and poles (220 kV and higher) but also 35 and 110 kV - these data is supplementary and was not involved in post-processing.
Funding
Council on grants of the President of the Russian Federation, grant number МК-5343.2021.1.5.