Jorg mentioned in the latest (May 26th) Dev Q+A series (at around the 1h19 mark on youtube) about any suggestions for how to get data about obstacles like powerlines - I was thinking about this previously when trying some sim VFR flying in the UK based on the real world paper VFR maps and trying to plan a flight around the real world visual reference points, and it turns out there’s actually a list of these for the UK with precise latitude/longitude location and altitude!
On the NATS AIP website (link NATS | AIS - Home) there are excel spreadsheets with all of the obstacles in the UK in the files named “Area 1 Obstacles File”, “VRP list” which has the visual reference points that pilots use while flying VFR, and “VFR obstacles list” which is as the name says.
I hope this is helpful! Keep up the amazing work you are doing for all the community