In a condominium, it would be interesting to have access to the data from the heating distributors. As far as I’m concerned, it’s the company OCEA that manages the heating consumption.
@Jluc I’ll take care of it: OCEA Smart Building and ista (the French portal ista-webconso.fr), let’s go 
I don’t have either at my place, so it will be developed blindly, relying on open-source projects that already read these portails. The first real test will be at your place: cold water, hot water and heating. This is the opportunity to see if we get the distributors or just an energy meter.
Small question: at your place, is it OCEA only, or do you also have ista in another housing? That will tell me who can test what 
@Jluc both have been released 
- OCEA Smart Building: Intégration externe - OCEA Smart Building (eau et chauffage en copropriété)
- ista Web’conso: the topic right next door, in Development
I checked the connection of both against the real portals: it goes all the way through. What remains to be validated with a real account is the reading of the meter readings. If you can try OCEA, I’d be interested, especially to see what comes up for heating 
Too fast 
At my place, I have ISTA for the cold and hot water meters and then OCEA since this summer.
Thank you for working on these topics so quickly.
I’ll be able to test both 