The building was finished in July. From 4 owners, only one has fully moved. Two owners are still between their old and new appartment, and the 4th owner is looking for a tenant. So I can't give real conclusions yet.
None of the owners/tenant has an electrical car. Probably in the future. Infrastructure will be easy to install, but is not required yet. The problem with EV and PV is that cars are on professional parking lot during the day.
Carbon calculation is not an issue in this project. Our part of the work is energy management, so we don't have a choice regarding the other aspects. It's nice for us when people are ready to buy batteries because with the actual regulations in Luxembourg, it is a "just for fun" investment. I believe that it will change in the future, but not before 2-3 years.
In the "policy and solution/renewable energy" trend is a nice link from ghoti about what could be done anywhere if the network regulator would be ready (its in the Orkney Islands):
https://www.youtube.com/watch?v=VEh7V9_uIqM&feature=youtu.bebut it requires a lot of work on the network regulator side.
Imagine what would happen if the regulator just says he has too much electricity so it is now 20% cheaper. On the building I manage, I can start 12 kW load just on water and buiding heating, but in each appartment is a washmachine, a dryer... It would create a total breakdown of the electrical network.
The PV/battery management system we have allows us to define different loads that can be started with different priorities. So I guess the network regulator could do the same thing, homes could enroll in a project, define what their extra load could be, and the regulator should be able to start them.
In the Orkney project, they solve that problem using the batteries as variable load. I guess that the end users pay always the same price for electricity, so they won't start all the systems together at the minute where it becomes cheaper. Since the utility company knows the load curve of the house, it is able to fill the batteries whenever network and electricity are available and can empty them when there is no load in the house and electricity is expensive. I guess that there are some additional requirements like heating sanitary water at night.
With the renewable/storage revolution, I believe that utility companies won't make so much money on electricity anymore, but on energy management. It's a new business case.