[interloxia]

"No vendor sells you a product for that gap, because the gap spans two vendors. So nobody can cross-examine the building. Including you, who owns it."

Power monitoring is surprisingly effective. Open data is better but a few shelly/whatever devices works even for dumb devices.

[wildekek]

I'm convinced power monitoring should always start from the grid connection. In our case, this was a 10KV connection which we could not access without the grid operator. So getting the data from them was the only option.