Estimation of the electrical consumption of a building

[fbertran]

Hello, as part of a renovation project, we want to size a micro-cogeneration and a photovoltaic installation.

We know all the powers of electrical installations (lighting, ventilation, etc.) as well as our usage scenarios. How to get an idea of ​​the building's annual energy consumption?

Thank you

[elephant]

You don't have a choice, you'll have to do a little math.
Lighting is super simple.
Fridges, stoves, washing machines, it is more complex since these devices do not have a continuous mode. Order a PM230 on econologie.com https://www.econologie.com/shop/wattmetr ... -p-20.html and measures the cycles of each device.
An excel table, a correlation with readings on your current home, and presto!
In general, an "ordinary" (comfortable) home, inhabited by 4 people consumes around 4 MWh / year, this can go up to 8 MWh / year if there is an electric boiler, electric stove, freezer, etc ...
This figure does not include heating.
Count 9 to 10 KWh / night for the boiler.