Standards and labels: BBC or Passive House? Who says what?
So I quickly checked our case:
- 4000 electric kWh (professional part included) = 10 320 kWh EP (supposing that in BE the coef is the same as in FR: 2.58).
- 2 to 3 Tons of wood = approximately 10 000 kWh EP.
Overall, reported on the surface we are (just) less than 120 kWh EP / m².an ! So if we replaced wood heating with halogens which have 90% thermal losses, we could pass our house (which if it is sufficiently well designed thermally is still very far from passivity even if our large solar surface must help ) as passive because we would be below 15 kWh "heating" ???
Is there an error in the 120 kWh EP / m².an number?
Because if it is to remove the heating and heat with halogen bulbs or an electric oven (double flow CMV allowing heat recovery from the oven throughout the house) ... I do not see the point ... in short there is a large "tolerance" between 15 final and 120 kWh EP / m² for the passivity standard!
But I'm glad we take into account GLOBAL electricity consumption!
So this subject would be welcome for take stock of the different energy standards Low Consumption Building or Passive House (HQE is rather focused on materials, even if a home HQE is often passive since the 2 approaches are strongly related) and especially the real efficiency of the BBC or passive houses ...
Edit: here is a document from comparative summary of 4 energy labels currently in force: RT2005, Effinergie, Passive House and Minergie