I've contributed a bit on the infrastructure side of things to OpenStreetMap--high voltage transmission lines, pipelines, etc. I also have contributed to allthe

I've contributed a bit on the infrastructure side of things to OpenStreetMap--high voltage transmission lines, pipelines, etc. I also have contributed to alltheplaces.xyz which whilst mostly known for collating shop locations, also collates infrastructure point data such as substations, traffic cameras, bins in parks, etc. As I'm in Australia, I naturally have more of an interest in Australia. Sometimes when trying to improve OSM with a new substation, wind farm or otherwise, you might have missing information such as a wind farm that is covered with stitched imagery--left half is a 2024 swath showing construction underway and concrete foundations prepared, or a pad excavated, right half is a 2026 swath showing turbines installed and operating. Sometimes it can be helpful to double check assumptions made about an excavated pad being a wind turbine foundation against public data--e.g. press release stating how many turbines have been ordered for the wind farm, or a low resolution map in a company report indicating rough placement of turbines. Or for a new substation with a 330kV bus and 110kV bus confirmed by tracing transmission lines to other substation buses, there could be a dangling transmission line traced to a tower next to the new substation, but it's not clear which bus it may connect to. This is where some more detailed public data, in the rare case it may be available (such as in Australia), can be useful to combine together to confirm an assumption. A real case I found recently was in Saudi Arabia where a press release from a company stated something to the effect of "We just successfully installed a 330kV feeder 9281 to substation G40", which confirmed how the the transmission lines connected to the substation. I have however mostly mapped in countries where OSM is most lacking--and for electricity infrastructure that is China--by orders of magnitude. An example I worked on previously is Hainan, which was previously mostly missing from OpenInfraMap.[2] China publish nothing and even require their street view imagery providers to blur substations. Even so--this is largely a pointless effort because with a bit of extra puzzle solving (such as switching between 4 historic satellite images to find the one where a shadow or a tower or pole is visible) it's almost always possible to get an accurate map produced. Gaps are mostly limited to out of date satellite imagery which for China is a huge accuracy problem because the scale of electricity grid expansion is absurd. It's commonplace to start tracing a transmission line to only find half way along, the transmission line disappears on a stitch in satellite imagery, and then more recent imagery on the other side of the stitch shows 3 new 500kV+ (including HVDC) transmission lines routed in parallel, replacing the old line. You can open an OSM editor almost anywhere in China and scroll around for a minute to find an unmapped high voltage transmission line, wind farm, substation, etc (having a list of coordinates where new satellite swaths are available would help most here). For a global list of electricity grid data sources, [1] is very detailed list that is well maintained. Countries in Africa are particularly challenging--some you'd be lucky to find even a single 800x800px image of the electricity grid... or even a website for the transmission network operator. [1] https://github.com/open-energy-transition/Awesome-Electrical-Grid-Mapping https://github.com/open-energy-transition/Awesome-Electrical... [2] https://openinframap.org/#8.28/19.121/110.058 https://openinframap.org/#8.28/19.121/110.058