NABERS - National Australian Built Environment Rating System MC-9: Treat on-site generation, storage and captured water by the Rules

What does MC-9 require?

Chapter 9: electricity consumed from on-site renewable generation does not count as grid consumption; exports are never deducted, import and export data are kept distinct, allocated renewable electricity cannot exceed the premises' consumption, and renewable electricity on-sold outside the rated premises is not allocated. Renewable data must align exactly with the rating period. Dedicated connections credit their single end use; shared connections (embedded networks) are allocated by claim (validated meters without gaps, evidence of ownership and of any on-sale or none) or by proportion of all network end uses, using only the NABERS allocation calculator, with generation allocated to one rating unless approved. Energy from a battery charged off site (for example bidirectional EV charging) is metered and treated as grid electricity. Cogeneration follows its Ruling. Rainwater and recycled water captured on site improve the rating without adjusting supply data, and exported water is never netted off.