RHAN 2Diwygio Rheoliadau Adeiladu 2010
Cyfraddau defnyddio ynni sylfaenol a gwerthoedd perfformiad ffabrig6
Ar ôl rheoliad 26, mewnosoder—
Primary energy consumption rates for new buildings26A
Where a building (other than a dwelling) is erected, it must not exceed the target primary energy consumption rate for the building which has been approved pursuant to regulation 25C(a).
Fabric performance values for new dwellings26B
Where a dwelling is erected, it must not exceed the target fabric performance values for the dwelling which have been approved pursuant to regulation 25C(b).