It’s kind of hard to hide electrical transmission line towers and HV->MV electrical substations, let alone power plants or solar fields. Virtually all HV transmission lines and most MV distribution lines are above-ground as they use air as an insulator for economic reasons, same with substations.

A higher amount of distribution lines and substations are underground in dense urban cores and some residential areas, but there’s plenty of above-ground electrical distribution as well.

It’s akin to trying to hide how many skyscrapers exist in the US, they’re highly visible anyways, might as well publish the info so people and companies that live and operate in the US can take advantage of it.

The US government itself publishes more or less the same information: https://www.eia.gov/maps/