# Energy 2.1 Greenhouse Gas Emissions
# Applies to
All development types
# Objective
Ensure the efficient use of energy and to reduce greenhouse gas emissions from building energy use.
# Summary
Points are awarded when annual greenhouse gas emissions are 10% below the benchmark for dwellings or meet the benchmark for non-residential spaces, as calculated by the built-in calculator, demonstrated by commitment to deemed-to-satisfy criteria (non-residential only) or demonstrated by alternative modelling. The calculation uses both building fabric and building services inputs.
# Documentation & evidence required
- If using the DtS method, provide insulation specifications (R-values), preliminary facade calculation, heating and cooling system type and CoP/EER, and water heating system details.
- If you are providing your own calculations for non-residential, supply modelling assumptions and results. Ensure that methods meet the requirements of the NCC Verification Method JV3 and BESS requirements.
- If you are proposing an alternative energy modelling protocol, seek approval from the relevant local council before proceeding.
- For all dwellings, show heating/cooling outdoor units (condensers), solar hot water panels and clotheslines on plans.
If you using providing your own calculations for dwellings, supply modelling assumptions and results. Include energy and greenhouse emissions for heating, cooling, hot water and clothes drying, with calculations clearly shown.